abstract book 2020 -inugration-28-8-2020...2020/08/28 · cell applications ipsita mohanty, s....

th th26 - 28 August, 2020

Department of Physics, School of Applied Sciences

Kalinga Institute of Industrial Technology(KIIT)

Deemed to be University

Bhubaneswar-751024, Odisha,India

AFM 2020E-Abstract BooK

Advisory Committee

(Dr. A. Samanta)Founder, KIIT & KISS

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Prof. Hrushikesha MohantyVice-Chancellor,

KIIT-Deemed to be University

Message

Prof. Sasmita SamantaPro-V ice Chancellor,


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Prof. Jnyana Ranjan MohantyRegistrar,


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Dr. Puspalata PattojoshiDean SAS,


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SAS, KIIT-Deemed to be University

Dr. S. K. S. Parashar

Convener

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International Virtual Conference on Advances in Functional Materials (AFM 2020): August 27-28, 2020

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Code Author Name and Publication Details Page No.

PL-1 Prof. Sabu Thomas Vice Chancellor, Mahatma Gandhi University,Kottayam, Kerala,

Interfacial Modification in Nanocomposites to Tailor Functionalities

1

PL-2 Dr. Patric Joseph Glynn Bharat Energy Storage Technology, Queensland, Australia

High Density Thermal Energy Storage

2

PL-3 Dr. Emre Erdem Sabanci University, Faculty of Engineering and Science, Materials Science

and Nano Engineering, Orhanli, Istanbul, Turkey Point Defects in Ceramics and Semiconductors and Their Roles in

Supercapacitor Devices

3

PL-4 Prof. Ram S. Katiyar

Speclab, Department of Physics, University of Puerto Rico, San Juan, USA

Progress in Designing Novel Single Phase Room Temperature Multiferroics

4

PL-5 Prof. Hari Srikanth Distinguished University Professor & Fellow -American Physical Society

Department of Physics, University of South Florida, USA Functional magnetic nanoparticles for biomedical applications

5

PL-6 Prof R. L. Shrama Managing Director at Spel Pvt. Ltd., Pune, India Energy Storage Present & Future Prospects

6

PL-7 Prof. Guylaine POULIN-VITTRANT GREMAN UMR 7347, CNRS, Université de Tours, INSA-CVL, France

Low-temperature synthesized ZnO nanostructures and their integration inanosystems

7

WINV-3 Dr.Amiya Priyam School of Physical and Chemical Sciences, Central University of South Bihar,

India Understanding the Optical Properties of Luminescent Semiconductor

Nanocrystals

8


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WINV-4 Mr. Sovan Kumar Patra Ferro Alloys Minerals Research Group, Tata Steel R&D, Jamshedpur, India

Quantum Dots and their diverse applications

9

WINV-5 Dr.Alluri Nagamalleswara Rao Nanomaterials and Systems Lab, Dept. of Mechatronics Engineering, Jeju

National University, South Korea Advances in Piezoelectric Nanomaterials: Growth, Device Modelling, and

Applications

10

WINV-6 Dr. Ashok Kumar Academy of Scientific and Innovative Research (AcSIR), CSIR- National

Physical Laboratory Campus, Delhi, India COVID19-Human physiological tracing dielectric sensors

11

INV-1 Dr. Prasana Kumar Sahoo

Material Science Centre, Indian Institute of Technology Kharagpur,, India Emerging Two-Dimensional Lateral Heterostructures for Optoelectronic

Devices

12

INV-2 Dr. Balaram Sahoo Materials Research Centre, Indian Institute of Science, Bangalore, India

Non-linear absorption behavior of carbonaceous nanomaterials for laser safety application

13

INV-3 Dr. Amritendu Roy SMMME, IIT Bhubaneswar, India

Designing and development of novel room temperature multiferroics based on transition metal oxides

14

INV-4 Dr. Dipti R. Sahu Department of Natural and Applied Sciences

Namibia University of Science and Technology, Namibia Room temperature multiferroic properties of rare earth

doped Ho, Gd and Ce - BiFeO3 ceramics-Comparative Study

15

INV-5 Dr. Ashok Kumar CSIR-National Physical Laboratory, Academy of Scientific and Innovative

Research (AcSIR), Delhi, India Basic understanding and design and development of low cost Blood

Pressure Measurement Devices

16


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INV-6 Dr. Amiya priyam Dept. of Chemistry, School of Physical and Chemical Sciences, Central

University of South Bihar, India Soft Chemistry Routes for tunable plasmonic nanomaterials and some

interesting applications thereof

17

INV-7 Dr. Somdutta Mukherjee Materials Chemistry Department, CSIR-IMMT Bhubaneswar, India

Gallium ferrite nanostructures for ferroelectric memory applications

18

INV-8 Dr. N.M. Rao Nanomaterials and Systems Lab, Dept. of Mechatronics Engineering, Jeju

National University, South Korea. Flexible, Multifunctional Piezoelectric Materials for Nanogenerators and

Self-Powered Sensor

19

YS1 Ramachandra Naik

Department of Physics, New Horizon College of Engineering, Bangalore-560103, India

Low temperature synthesis and photoluminescence properties of red emitMg2SiO4:Eu3+ nanophosphor for near UV light emitting diodes

20

YS2 Mr.A.Manivannan M.E Department of Mechanical Engineering, M.Kumarasamy

College of Engineering, Karur, Tamil Nadu, India Exemplary Encapsulate Feeding in Stir Casting for Quality Composite

21

YS3 Anjan Kumar Jena Nanomagnetism and Microscopy Laboratory, Department of Physics, Indian

Institute of Technology Hyderabad, Telangana, India Effects of Magnetic field on resistive switching in multiferroic based

Ag/BiFeO3/FTO RRAM device

22

YS4 A. Puhan School of Applied Sciences (Physics),

KIIT Deemed to be University, Bhubaneswar, India Facile single phase synthesis of Sr, Co co-doped BiFeO3 nanoparticles for

boosting photocatalytic and magnetic properties

23

YS5 Atal Bihari Swain, 24


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Department of Physics, Indian Institute of Technology Madras, Chennai, IndiaEngineering the resonance modes for enhanced magnetoelectric coupling

in bilayer laminate composites for energy harvesting application

YS6 Bhavesh Kumar Dadhich Department of Physics, School of Applied Sciences, Kalinga Institute of Industrial Technology, Deemed to be University, Bhubaneswar, India Hollow silver nanostructures: The role of capping agents in

tailoring the shape, structure and plasmonic properties

25

YS7 Krishnarjun Banerjee Department of Physics, Indian Institute of Technology Hyderabad,

Hyderabad, India Investigation on the discharge energy storage density of the Rb

substituted Na0.5Bi0.5TiO3 relaxor ferroelectric and its suitability for the orthopedic application

26

YS8 Lagen Kumar Pradhan Department of Physics, Indian Institute of Technology Patna

Nonstoichiometric charge defect induced relaxor antiferroelectric ordering in La modified Bi0.5 (Na0.80K0.20)0.5TiO3 relaxor ferroelectric

27

YS9 Prabhasini Gupta Department of Physics, Siksha ‘O’ Anusandhan University, Bhubaneswar-

751030, Odisha, India Structural and Electrical properties of Bi3TiVO9 Ferroelectric Ceramic

28

YS10 Sagarika Nayak National Institute of Science Education and Research (NISER), Bhubaneswar,

India Static and dynamic magnetic properties of soft/hard ferromagnetic

bilayers

29

YS11 Sujoy Kumar Ghosh Ulsan National Institute of Science and Technology (UNIST), South Korea

All-fiber self-powered wearable nano-tactile ferroelectric sensor

30

YS12 Sunny Nandi Department of Physics

Tezpur University, Assam, India A low cost and extremely safe rechargeable aqueous aluminum-metal

battery

31


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YS13 Suresh Bandi Department of Metallurgical & Materials Engineering, Visvesvaraya National

Institute of Technology, Nagpur, India Graphene from discharged dry cell battery electrodes

32

YS14 Sushmita Dey CSIR-National Metallurgical Laboratory, Jamshedpur, India,

High Temperature Magnetocaloric Effect in Devitrified Fe/Co-based Glassy Monolayer and Bilayer Ribbons

33

YS15 Upendra Kumar Department of Physics, Banasthali Vidyapith, Banasthali, Rajasthan, India

Sr2SnO4 Ruddlesden Popper Oxide: A multifunctional material

34

YS16 U.K. Panigrahi Department of Physics, North Orissa University, Baripada, India

Zn Doping Induced Enhancement of Multifunctional Properties in NiO Nanoparticles

35

YS17 Venkateswaran Vivekananthan, Nanomaterials & System Lab, Department of Mechatronics Engineering, Jeju

National University, South Korea. Biocompatible collagen-nanofibrils: An approach for sustainable energy

harvesting and battery-free humidity sensor applications

36

YS18 A. Hossain

Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg, Russia Structure and properties of Nd1-xAxMn0.5Fe0.5O3-δ (A=Ca, Sr, Ba; x=0,

0.25)

37

PN 22 Post Annealing Effects of Perovskite (CH3NH3PbI3) Thin films For Solar Cell Applications

Ipsita Mohanty, S. Mangal, S. Jana, Udai P. Singh

38

PN 28 Nano-crystalline Ag6Mo10O33 Thin Film – A Potential Petroleum Gas Sensor

Sunasira Misra

39

PN 78 The Usage of Biochar as Potential Filler in NFRPC V.Arumugaprabu and P.Sivaranjana

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PN 121 Unprecedented designing of a new metal-organic polymer material with excellent photodegradation property toward hazardous dyes in aqueous

phase M. Shahnawaz Khan, Mohd Khalid

41

PN 125 Towards a low cost rechargeable aqueous aluminum-metal battery Sunny Nandi

42

PN 154 A real-time colorimetric chemosensor for detection nitroexplosive and metal ions in aqueous media and human hemoglobin

Sonam Shakya

43

PN 198 Designing of high security locking mechanism using shape memory alloy R. Manik, A. Behera

44

PN 200 Designing core shell MoO3@NiCo2S4 hybrid composite for advance charge

Dillip Kumar Mohapatra

45

PN 273 Harvesting Energy Through Electrochemical Water Splitting by Employing a Ternary Hybrid of Patronite-Carbon Nanotubes-Reduced

Graphene Oxide Satyajit Ratha, Aneeya K. Samantara, Jiban K. Das, Naresh K. Jena,

Brahmananda Chakraborty, and J. N. Behera

46

PN 292 Novel Hybridized Nanocomposites of WO3 Prepared by Microwave-Assisted Method for Electrochemical Supercapacitor Application

P.Periasamy, T.Krishnakumar, M.Sathish, Murthy Chavali, Prem Felix Siril5, V.P.Devarajan

47

PN 388 Molecular Dynamics Simulation of Thermodynamic Properties of Copper Cluster using 2NNMEAM Potential

M.P.Samantaray

48

PN 403 Influence of Gd/Nb on Activation energy, Relaxation response, impedance, Nyquist plots and Dielectric studies at high frequency of

BaTiO3-Li0.5Fe2.5O4 solid compounds Ganapathi Rao Gajula, Lakshmi Rekha Buddiga

49

PN 431 Magnetic and Magneto-electric Coupling Properties of Polycrystalline BiFeO3 Variant

Pralay Paul

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PN 471 Self-powered pressure sensor and energy harvester for human machine interface

Kaushik Parida

51

PN 479 Synthesis and Characterization of Mn-doped ZnFe2O4 Harshpreet Cheema, Upendra Kumar

52

PN 481 Design and Development of Solar Powered Electric Vehicle Gowtham Rajan N

53

PN 491 Rare-earth doped Advanced Ferrites for Microwave Absorption K. Sakthipandi and S. K. S. Parashar

54

PN 492 Ultra-low Thermal Conductivity in Thalium Selenide Shidaling Matteppanavar, Moinak Dutta and Kanishka Biswas

55

PN 544 Relaxation of electron glass at zero disorder for assymmetrical composition Vikas Malik

56

PN 549 Voltage controlled magnetisation reversal in magnetostrictive bilayer thin films.

D.P. Pattnaik, K.W. Edmonds, and A.W. Rushforth

57

PN 570 Synthesis, Spectral, Hirshfeld surface analysis, DFT calculations and molecular docking studies on dioxol derivatives as potential antibacterial

inhibitors V. Vetrivelan

58

PN 683 Optimization of Cost-Effective ITO Free Inverted OSC Vishal Gupta and Lalit Kumar

59

PN 689 Amorphous silica nanoparticles derived from rice husk biowaste via microwave combustion for drug delivery

P. Araichimani, G. Suresh Kumar, K.M. Prabu, and P.Agalya

60

PN 691 Nonswitchable polarization and magnetoelectric coupling in the high-pressure synthesized doubly ordered perovskites NaYMnWO6 and

NaHoCoWO6 Chandan De and A. Sundaresan

61

PN 715 Evidence for freezing of longitudinal and transverse component of spins in the multiferroic (Bi1-xBax)(Fe1-xTix)O3 system

Arun Kumar and Dhananjai Pandey

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PN 724 The Removal of textile rective dye from aqueous solution using eggshell biowaste derived hydroxyapatite

G.Praveenkumar

63

PN 756 {040/110} facet isotype heterojunctions with monoclinic scheelite BiVO4 Basudev Baral, Kulamani Parida

64

PN 764 Synthesis of Polyethyl methacrylate/Polyvinyl alcohol /Ag@BN Nano hybrid thin films

Jayaprakash Behera, Sarat Kumar Swain

65

PN 774 Synthesis of Zinc oxide and its measurement of band gap energy using diffuse reflectance Spectra

Ashwini Barve

66

PN 775 Investigation Of Novel One Dimensional Meta-Material Based Isolation Systems For Seismic Response Reduction Of Bridge

Saumitra J.

67

PN 793 Biosorption of arsenite and arsenate from aqueous medium using Moringa oleifera Lamarck bark: Exploration of kinetics,

thermodynamics and mechanistic aspects Ashish Kumara*, J.P. Pandeya, Satish Kumarb

68

PN 797 Improvement of Durability & Sustainability of Cement Concrete by Carbon Nano-particles

Ghosal M.

69

PN 798 Enhancement of Recoverable Energy Storage Density in KNN Modified NBT-Based Lead-Free Ceramics at Various Applied Electric Field

A. Singha, S. Praharaj, D. Rout

70

PN 805 Temperature dependent dynamic Ferroelectric hysteresis loop of La modified BNT-BTO solid solution for device applications

Lagen Kumar Pradhan and Manoranjan Kar

71

PN 848 A novel Metal Insulator Metal capacitor technology with High-κ La2O3 – sandwiched ZrO2 nanolaminates

Sumit Ramdas Patil

72

PN 854 Synthesis and characterization of CdSe-CdS Dot-in-rod cellulose nanocomposites thin film

Soumya Ranjan Patra

73


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PN 913 Exploration of morphotropic phase boundary in (Na0.5Bi0.5) TiO3− BaTiO3 Solid solution

(A). S.Sahoo (B). T.Badapanda (C). S.Sarangi

74

PN 917 Physics of the multi-functionality of cobalt modified lanthanum ferrite ceramics

K. K. Bhargav

75

PN 938 Molecular interactions of thiamine hydrochloride in aqueous solutions of saccharides at T= (293.15-318.15) K : Volumetric and viscometric

analysis Richu, Ashwani Kumar

76

PN 942 Structural analysis of quaternary GeTeSeGa thin films by X-ray diffraction

Ekta Sharma, P.B.Barman, Pankaj Sharma

77

PN 951 Silver Nanocrystals: Plasmon Tunability, Growth Kinetics, and Catalytic Applications

Bhavesh Kumar Dadhich, Bhavya Bhushan, Amiya Priyam

78

PN 952 Effect of Processing Condition on Structural Properties of BaZr0.30Ti0.70O3 Ceramic

Suman Rani

79

PN 953 Mechanical Properties of NiTi Plasma Spray Coating B. Swain, P. Mallick, S. K. Bhuyan, S. S. Mohapatra, S. C. Mishra, A. Behera

80

PN 969 Effect of Urea and Choline Chloride Based Deep Eutectic Solvent on the Physicochemical Properties and Phase behavior of Salicylic Acid and

Salicylamide at 298.25-313.15K Qammer Majid, Dr. Ashwani Kumar

81

PN 972 Synergistic effect of the removal of textile dye by sonophotocatalysis Madhupriya Samanta

82

PN 979 Magnetic and Electric properties of Chromium and cobalt doped BiFeO3 Nanoparticles

A. K. Sinha B. Bhushan, Jagannath, Sher Singh Meena, Shashwati Sen, S.K. Mishra, B. P. Mandal

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PN 981 Magnetic field controlled multilevel resistive switching in multiferroic based Ag/BiFeO3/FTO RRAM device

Anjan Kumar Jena, Jyoti Ranjan Mohanty

84

PN 982 Human motion interactive mechanical energy harvester based on all inorganic perovskite-PVDF

Suvankar Mondal

85

PN 983 Physical Analysis of CdS Nanoparticles Synthesized via. Direct Precipitation Method

Dr Suresh Kumar

86

PN 987 Dielectric relaxation in PVDF / 0.5(Ba0.7Ca0.3)TiO3-0.5Ba(Zr0.2Ti0.8)O3 nanocomposites

Bablu Kumar Pandey

87

PN 988 Electronic and magnetic properties of Cr2Ge2Se6 S. Kar, A. K. Nair and S.J. Ray

88

PN 994 A low-cost rechargeable battery with aluminum and graphite Shyamal K Das

89

PN 1015 Thermal Analysis of Mesophase in PET: A Surface sensing factor of the polymer

Manoranjan Sahoo, Biswajit Mallick and Gananath Dash

90

PN 1027 ZnO nanotube/graphene based vertical field effect transistor for flexible electronics

Arpana Agrawal

91

PN 1032 Investigation of structural and electrical properties of Lanthanum doped BCZT ceramics.

Saparjya S., S. Behera, T. Badapanda, Piyush R. Das

92

PN 1043 Magnetic characteristics of cerium doped (Ba0.5Sr0.5)(Fe1-xCex)O3-ẟ (x = 0 - 1.0) perovskites

Santosh Chauhan, Shivendra Kumar Jaiswal

93

PN 1054 MEMS Technology for Environmental Sensing Mr. Sudipta Dash

94

PN 1076 Design and development of 1,3,4- Oxadiazole fused Schiff base derivatives as a Potent Biological active molecule

Manjunath Madalageri

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xi

PN 1091 Studies on NaNbO3 modified BiFeO3 system: finding MPB using XRD and Raman analysis, structural and electrical analysis

Manojit De, H. S. Tewari, R. N. P. Choudhury

96

PN 1096 Fabrication of bio-nanocomposite films with antibacterial potential Mamata Das, Jasaswini Tripathy

97

PN 1098 Sintering temperature impact on microstructure and dielectric properties of BaHf0.2Ti0.8O3 (BHT) lead-free relaxor ferroelectric ceramics

prepared by sol-gel method Revati Nandan, Lokeshwari Negi, Rahul Singh and N. S. Negi

98

PN 1099 Study of La1-xCaxMnO3 (0<x<0.5) (LCMO) grown on Si(100) substrate for the microstructural and magnetic properties of solution deposited

thin films Rahul Singh, Hakikat Sharma, Revati Nandan and N.S. Negi

99

PN 1102 A light/pH/multiple ion-driven smart switchable material for computing sequential logic operations

Gyan Ranjan Sahoo and Niraj Kumari*

100

PN 1107 Ceramic Nanomaterials for Humidity Sensing Studies Prof. Narendra Kumar Pandey

101

PN 1110 Synthesis and characterization of BTO in BFO Environment Anita Kumari Panda1, B.N. Parida2, R.K. Parida1

102

PN 1112 Photoluminescence and Magnetic Characterization of Mg Doped NiO Nanoparticles

U.K. Panigrahia, P.D. Babub and P. Mallicka*

103

PN 1115 Analysing the Thermal and Dielectric Properties of Silver Nanoparticle decorated functionalised Single-Walled Carbon Nanotube Hybrid

Nanofiller reinforced Polyaniline Nanocomposites Lipsa Shubhadarshinee

104

PN 1116 Structural and Optical properties of Manganese Doped BiFeO3 Multifunctional Materials

Samita Pattanayak

105

PN 1119 Structural investigation of (1-x) NaNbO3 – x (Ba0.7Ca0.3)TiO3 piezoelectric system: A neutron diffraction study

Sourabh Wajhal, A. B. Shinde, S. K. Mishra and P. S. R. Krishna

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PN 1131 Multiferroism and magnetoelectric coupling in magnetic-ferroelectric nanocomposites Manish Kumar

107

PN 1141 Self-Powered Flexible Traffic Sensor With Highly-Aligned Piezoelectric Single Crystal Fibers Array

J. Kaarthik, Pooja Bharti, and Venkateswarlu Annapureddy

108

PN 1146 Estimation of Lattice Strain in Mg2TiO4 Nanoparticles by Williamson-Hall (W-H) Method

R. K. Bhuyan

109

PN 1147 An Exact Approach to the Optical Pulse Propagation in Nonlinear Meta-materials

Lipsa Nanda

110

PN 1169 Development and characterization of perovskite polymer composite thin films for optoelectronic applications

Sangeeta Lakra, Sanat Kumar Mukherjee

111

PN 1170 Green Technology Dr. Ghanshyam Barman

112

PN 1177 Structural and Magnetic properties of yttrium doped cobalt zinc ferrite. Jyoti V.Devkar,Ketankumar R.Gayakvad and Ketaki K.Patankar

113

PN 1184 Structural, Electrical Properties and Synthesis of CNT-Cu composites: An Overview

Shivani Dhall, Srijan Pushkarna

114

PN 1185 Enhancement in magnetic properties by Co, Cu and Mn substituted nickel ferrite (NiFe2O4) prepared by Metallo-organic decomposition

(MOD) chemical solution method Lokeshwari Negi, Revati Nandan and N. S. Negi

115

PN 1186 Variation of third order suscptibility and nonlinear refractive index by doping Fe on TiO2 Thin Film

Dr. Maya Devi

116

PN 1269 Optical properties of Au-Ag Alloys Hira Joshi

117

PN 1273 Effect of Zr and Ti substitution on multiferroic properties of Bi0.90Gd0.10FeO3 ceramics

118


xiii

Prakash Chandra Sati

PN 1274 Engineering the resonance modes for enhanced magnetoelectric coupling in bilayer laminate composites for energy harvesting application A. B. Swain, S. Dinesh Kumar, V. Subramanian and P. Murugavel

119

PN 1275 Micro-nanofabrication using Shrink Lithography Arti

120

PN 1281 Structural and Dielectric Properties of “Gd” Substituted BNT ceramics S.Behera*, S.Swain

121

PN 1286 Polymer Nanocomposites: Synthesis and Chacterization Shaikh Nazrul

122

PN 1289 Simultaneous observation of anti-damping and inverse spin Hall effect in La0.67Sr0.33MnO3/Pt bilayers system

Pushpendra Gupta, Braj Bhusan Singh, Koustuv Roy, Anirban Sarkar, Markus Waschk, Thomas Brueckel, and Subhankar Bedanta

123

PN 1291 Strain Engineered Domain Structure and Their Relaxation in Perpendicularly Magnetized Co/Pt Deposited on Flexible Polyimide

Esita Pandey, Braj B. Singh, Purbasha Sharangi, Subhankar Bedanta

124

PN 1292 Thickness dependence study of the Dzyaloshinskii-Moriya interaction in Pt/CoFeB bilayers

Brindaban Ojha, Braj Bhusan Singh, Sougata Mallick, Minaxi Sharma, André Thiaville, Stanislas Rohart & Subhankar Bedanta

125

PN 1296 Effect of Ir spacer layer on perpendicular synthetic antiferromagnetic coupling in Co/Pt multilayers

Shaktiranjan Mohanty, Minaxi Sharma, Braj Bhusan Singh, Subhankar Bedanta

126

PN 1286 Preferentially Oriented Rutile Phase in TiO2 Thin Film by DC Magnetron Sputtering

Haripriya Rath, U.P. Singh and N.C. Mishra

127

PN 1301 Inverse spin Hall effect in sputtered MoS2/CoFeB bilayers Abhisek Mishra, V.Thiruvengadam, Koustuv Roy, Pushpendra Gupta, Braj

Bhusan Singh, Subhankar Bedanta

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PN 1303 Study the effect Ni2+-ions on electrical and magnetic characteristics of polycrystalline ceramics: La2CuMnO6

Singh Narayan Digvijaya, Choudhary Janay Ram and Mahato Kumar Dev

129

PN 1307 Structural and Magnetic properties of yttrium doped cobalt zinc ferrite Jyoti V. Devkar, Ketaki K. Patankar and Ketankumar R. Gayakwad

130

PN 1308 Microwave assisted synthesis of Mn doped SrBi2Nb2O9 for energy storage application

Anurag Pritam and Susanta Sinha Roy

131

PN 1313 Thin polymeric microstructured low-pressure sensors Shubham Kumar, Sanjay Yadav and Ashok Kumar

132

PN 1314 Low-cost wearable and flexible pressure sensor with porous dielectric layer

Bijender and Ashok Kumar

133

PN 1315 Enhanced dielectric, ferroelectric, piezoelectric properties of Al doped ZnO/PVDF-HFP nanocomposites

Shewli Pratihar

134

PN 1317 Effect of Bismuth doping in PZT on pressure and temperature-dependent dielectric and capacitive properties

Vikas N. Thakur, Sanjay Yadav, Ashok Kumar

135

PN 1319 Metal free coupling reaction: Facile and one-pot synthesis of imidazopyridine analogs

Nancy slathia, Usha Kumari Verma, Lalita Devi, Dolma Tsering

136

PN 1320 Smartphone integrated spectrophotometric detection of cysteine by b-cyclodextrin capped silver nanoparticles as a probe

R. Rajamanikandan and M. Ilanchelian

137

PN 1321 Existence of Bipolar and Unipolar Resistive Switching M. Asif, Ashok Kumar

138

PN 1322 Structural and dielectric studies in Zn modified CoFe2O4 ceramics. Tuntun Shah1, Krishnamayee Bhoi 2, Biswajit dalai1, Dillip. K. Pradhan2,

B.C. Sutar3

139

PN 1323 Observation of inverse spin Hall effect at CoFeB/C60 interface Purbasha Sharangi, Braj Bhusan Singh, Subhankar Bedanta*

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PN 1325 Aptamer-Modified Nanomaterials and their Biosensing Applications Pooja Rani Kuri

141

PN 1326 Synthesis of CNT-Cu Composites and their Structural and Electrical Properties: An Overview

Shivani Dhall, Srijan Pushkarna

142

PN 1328 Structural, microstructural and dielectric properties of Sr+2 doped BaTiO3

Sourav Maity. Presenting Author Shrabanee Sen. Corresponding Author

143

PN 1330 Electrocaloric effect in lead-magnesium niobate ceramics Charanjeet Singh, Ashok Kumar

144

PN 1333 Waste dry cell battery electrodes derived graphene and its application Ajeet K. Srivastav

145

PN 1338 Dielectric response of Ba and Zr doped bismuth ferrite Amrita Nayak, S. K. Patri and B. Behera

146

PN 1353 Copper-Aluminium based hexaferrite/Carbon Heterostructure: Electromagnetic shielding and Microwave Absorption Properties in 8-

18GHz frequency range Sanghamitra Acharya and Suwarna Datar

147

PN 1363 Enhanced Energy Storage Density and Electric Field Induced Strain Response in novel Gd-Substituted Lead-Free Ferroelectric for Capacitor

and Actuator Applications Cilaveni Goutham, Saket Asthana*

148

PN 1367 Frequency and temperature dependent electrical properties of Na0.5Bi0.5TiO3 ceramic system

Bijayalaxmi Kuanar, Dhrubananda Behera, Priyambada Nayak, Biswajit Dalai

149

PN 1368 Compositional induced impedance and conductivity study of Cerium doped Bismuth Sodium Tiatnate ceramic

S. Lenka,T. Badapanda

150

PN 1369 Magnetic, electronic and optical properties of half metallic double perovskite oxide, Ba2YbTaO6: A First Principle Calculation

Arvind Kumar

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PN 1372 Artificial Neural Network using Skyrmionics Adyashakti Dash, Subhankar Bedanta

152

PN 1373 Structural and Mechanical Characterization of Groundnut Shell Powder and its Reinforced Polymer Composite

Chinmayee Dash , Sudip Ghara and Dillip Kumar Bisoyi

153

PN 1376 High efficiency spin filtering in magnetic phosphorene P. Kumari, S. Majumder, S. Rani, A. K. Nair, K. Kumari, M. Venkata

Kamalakar, S. J. Ray

154

PN 1377 Phase Formation And Electrical Conductivity Of Germanium Doped Strontium Silicate (Sr3Si2.7Ge0.3O9-δ) As Electrolyte For IT-SOFCs

Hera Tarique

155

PN 1381 Role of spin-glass like frustration on exchange bias effect in Fe/Ir20Mn80 and Ni50Mn50/Co40Fe40B20 bilayers

Sagarika Nayaa, Palash Kumar Mannaa, Vijayabaskaran Thiruvengadama, Braj Bhusan Singha, J. Arout Chelvaneb and Subhankar Bedanta

156

PN 1384 Light emission from SrAl2O4:Eu,Dy composite film under impact of steel ball

Piyush Jha and Ayush Khare

157

PN 1388 Investigation of dielectric and relaxor behaviour of bismuth doped BaTiO3 ceramic

A. K.Mahapatra, Dr. Tanmaya Badapanda, Dr. Subrata Sarangi

158

PN 1389 Effect of electromagnetic interaction PVA/Graphite/Barium Titanate for sensor based application.

A.Tusharkanta Nayak, B. Roshni Pattanayak, C.Rishu Prasad, D.Kajal Parashar, E. SKS Parashar

159

PN 1390 Implementation of alumina extracted enormous waste with Polymer based matrix for electromagnetic application

A. Roshni Pattanayak, B. Tusharkanta Nayak, C.Rishu Prasad, D.Kajal Parashar, E. SKS Parashar

160

PN 1392 Next generation Lead Free Nanomaterials for High Piezoelectric Prafulla Kumar Dash and Dr.S.K.S. Parasar

161

PN 1393 Electronic Structure of some Semiconductors using k.pi Theory. Dr. Subrat Kumar Shadangi

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PN 1418 Structural, Dielectric And Electrical Properties Of Lead Magnesium Niobate-Lead Titanate 0.6 (Pb(Mg 1/3Nb2/3)O3- 0.4PbTiO3 Ceramic

Jayanta Kumar Mishra and Banarji Behera

163


1

PL-1

Interfacial Modification in Nanocomposites to Tailor Functionalities

Sabu Thomas Vice Chancellor, Mahatma Gandhi University,

Priyadarshini Hills P. O. Kottayam, Kerala, India-686560,

[email protected] , www.sabuthomas.com, www.iiucnn.mgu.ac.in

Abstract-The talk will concentrate on various approaches being used to engineer materials at the nanoscale for various applications in future technologies. In particular, the case of clay, carbon nanostructures (e.g. nanotubes, graphene), metal oxides, bionanomaterials (cellulose, starch and chitin) will be used to highlight the challenges and progress. Several polymer systems will be considered such as rubbers, thermoplastics, thermoetts and their blends for the fabrication of functional polymer nanocomposites. The interfacial activity of nanomaterials in compatibilising binary polymer blends will also be discussed. Various self-assembled architectures of hybrid nanostructures can be made using relatively simple processes. Some of these structures offer excellent opportunity to probe novel nanoscale behavior and can impart unusual macroscopic end properties. I will talk about various applications of these materials, taking into account their multifunctional properties. Some of the promising applications of clay, metal oxides, nano cellulose, chitin, carbon nanomaterials and their hybrids will be reviewed. Finally the effect of dewetting up on solvent rinsing on nano scale thin films will also be discussed.

References 1. S. Thomas et al. , Soft Matter, 2020 2. S. Thomas et al ,2020, Surfaces and Interfaces,2020, 18, 100451 3. S. Thomas et al ,2019,. Composites Part B: Engineering, 173, 106798. 4. S. Thomas et al ,2019. Electrochimica Acta, 319, 189-200. 5. S. Thomas et al ,2020, Cellulose, 1-16. 6. S. Thomas et al. Macromolecules, 2017 7. S. Thomas et al. Langmuir, 2016, 32 (14), 3514-3524 8. S. Thomas et al. Macromolecules, 2016, 49 (5), 1807-1815 9. S. Thomas et al. Progress in Polymer Science, 2014, 39(4), 749-780. 10. S. Thomas et al, Soft Matter accepted. 11. S. Thomas, J. Phys. Chem. B., 2010, 114, 13271–13281. 12. S. Thomas, J. Phys. Chem.B., 2009, 113, 5418-5430. 13. S. Thomas, J. Phys. Chem. B., 2008, 112, 14793–14803. 14. S. Thomas et al. Applied Clay Science,2016, 123, 1-10. 15. S. Thomas et al. Rubber Chemistry and Technology, 2016 16. S. Thomas et al. Composites Science and Technology, 116, 9-17. 17. S.Thomas et al. Physical Chemistry Chemical Physics, 2015, 17(29), 19527-19537. 18. S.Thomas et al. Journal of Materials Chemistry C, 2014. 2(40), 8446-8485


2

PL-2

High Density Thermal Energy Storage

Patrick Joseph Glynn Adjunct Professor Griffith University Brisbane,

Queensland, Australia & Chairman and Technical Consultant

Bharat Energy Storage Technology (BEST) Pty E-mail: [email protected]

Abstract We have developed an energy storage system utilising the latent heat of molten silicon metalloid at 14140C that has a very high latent heat energy density of 499 Watts per kg and due to the high temperature of molten silicon the stored energy is extracted through solid state high thermal conductivity sintered graphite using a Stirling engine at a Carnot efficiency of 78%. The electrical energy efficiency will be approximately 58% and if used in a combined heat and power (CHP) application the overall efficiency energy input to energy output will be greater than 90%.

As a manufacturing and power utility company with the purpose of developing power generation CO2 elimination technologies and licensing those technologies to stored energy application specific companies such as mobile phone cell-towers, utilities, bus, rail, ferries and any other applications where stored energy is applicable. Further research and development of efficient power cycle technology will be undertaken to increase the energy density and efficiency of operation of the BEST thermal cell. There is a 10-year research and development program which will increase the thermal cell efficiency electrical energy storage from initially >58% (Comparable to Lead Acid Battery) utilising Stirling engines to >90% efficiency utilising closed cycle gas turbine technology (Comparable to Li-Ion Batteries). The Combined Heat and Power efficiency of the BEST thermal cell is 92% with a projected life of over 25 years is a market leader at this stage of development.

The implementation of the BEST thermal cell is different to conventional battery technology. HDTEC is placed between the energy generator and the energy consumption on a 24-hour basis sometimes referred to as base load power. This guarantees an uninterruptable conditioned electrical power output as the HDTEC can be charged and discharged simultaneously this is regardless of how dirty the supplied electrical energy is.


3

PL-3 Point Defects in Ceramics and Semiconductors and Their Roles in

Supercapacitor Devices

Emre Erdem

Sabanci University, Faculty of Engineering and Science, Materials Science and Nano Engineering,

Orhanli, Istanbul, Turkey

E-mail: [email protected] Abstract Electron paramagnetic resonance (EPR) is a very powerful method due to its enhanced sensitivity to unpaired electrons. In order to understand the defect structure in functional nano-materials we use multi-frequency EPR spectroscopy. In this presentation i) basics of EPR spectroscopy, ii) quantum confinement effects in ferroelectric nano-materials and iii) EPR and Photoluminescence (PL) investigations of intrinsic defect centers in semiconductor zinc oxide (ZnO) nanoparticles will be given. Starting with the introductory information about EPR spectroscopy; poling, aging, doping and nano-size effects will be discussed for the ferroelectric materials such as, PbTiO3, BaTiO3, PbZrTiO3 (PZT) etc. In the last part of the talk, surface and core defects and their reactivity under temperature and light will be presented for ZnO semiconductor nano-materials. Defect models will be discussed. Finally application of such materials as electrode materials and their electrochemical performance test results in the real supercapacitor devices will be presented.

Figure: (left) Defect evolution of non-stoichiometric ZnO. (right) The supercapacitor device based on ZnO and 3D graphene foam electrodes.


4

PL-4 Progress in Designing Novel Single Phase Room Temperature Multiferroics

Ram S. Katiyar

Speclab, Department of Physics, University of Puerto Rico, San Juan, PR 00925-2537, USA

E-mail: [email protected]

Abstract

Magnetoelectric multiferroics, because of their coupled electric and magnetic ordering in a single phase, are eminent for applications in logic and non-volatile memory devices. During last several years, our group at the university of Puerto Rico (UPR) has been involved in synthesizing novel single phase room temperature multiferroics that included not only solid solutions of lead zirconate titanate with lead iron tungstate, lead iron niobate, and lead iron tantalate, but also recently discovered palladium substituted room temperature multiferroics, namely PbPd0.3Ti0.7O3 and Pb(Zr0.2Ti0.8)Pd0.3O3. In this presentation, we will report recent progress in synthesizing thin films of the above materials utilizing pulsed laser deposition technique on various substrates at Speclab. We will also report results on recently grown Pd substituted lead titanate and lead zirconate titanate thin films showing room temperature multiferroic behavior. The origin of magnetic ordering in these materials was attributed to the existence of Pd2+ and Pd4+ mixed oxidation states of palladium dispersed in the polar matrices. Such multiferroics may have potential applications in nonvolatile memory and other multifunctional devices.


5

PL-5 Functional magnetic nanoparticles for biomedical applications

Hari Srikanth

Distinguished University Professor & Fellow -American Physical Society

Department of Physics, University of South Florida, Tampa, Florida USA

Abstract Magnetic nanoparticles have been building blocks in applications ranging from high density recording to spintronics and nanomedicine. Magnetic anisotropies in nanoparticles arising from surfaces, shapes and interfaces in hybrid structures are important in determining the functional response in various applications. In this talk I will first introduce the basic aspects of anisotropy and how to tune it in nanostructures. Tuning anisotropy has a direct impact on the performance of functional magnetic nanoparticles in biomedical applications such as improving contrast enhancement in MRI and enhanced magnetic hyperthermia cancer therapy. There is a need to improve the surface functionalization and specific absorption rate (SAR) or heating efficiency of nanoparticles for cancer diagnostics and therapy. Strategies going beyond simple spherical structures such as exchange coupled core-shell nanoparticles, nanowire, nanotube geometries can be exploited to increase saturation magnetization, effective anisotropy and heating efficiency in magnetic hyperthermia. This lecture will combine insights into fundamental physics of magnetic nanostructures along with recent research advances in their application in cancer therapy and diagnostics in nanomedicine.


6

PL-6

Energy Storage Technology Present & Future Prospects

R. L. Shrama Managing Director,

Spel Pvt. Ltd., Pune, India Abstract Growing concerns about the environmental impacts of fossil fuels, thrust on adoption of Electric mobility, push for development and utilization of large-scale renewable energies like Solar and wind, and with the development of smart grid, supported by investment and government policies, the prospect of energy storage application has gone up multifold. Potential applications of Energy Storage could be found in the entire spectrum of power systems such as generation, transmission, distribution, and utilization. Energy storage is not new. Batteries have been used since the early 1800s, and the rapid development of energy storage technology and it’s commercialization has created significant impact on power system in terms of future system model. Modern electronic devices/gadgets have developed at extremely high pace, but energy storage devices have not been able to keep pace with these Power-Hungry devices/gadgets. Presently options for energy storage is revolving around batteries particularly the lithium-ion battery, but due recent development in Supercapacitor technology, advancement in materials and reduction in cost of materials, Supercapacitors are fast catching up, and can potentially bridge the gap for critical commercial applications. In fact, Supercapacitors have caught attention due to their unique environment friendly properties, fast charging, wide temperature window, safety, and extremely high power density. Casual overview of these two technologies Batteries and Supercapacitors may give impression that these are competing technologies, but the fact remains that they are complementing technologies. In fact, the development/research trends in these two technologies translates that in quest of further development/advancements batteries wants to inherit supercapacitor capabilities, and supercapacitors want to inherit battery capabilities. This trend is indicative of is converging technology…………


7

PL-7 Low-temperature synthesized ZnO nanostructures and their integration into

nanosystems

Dr. Guylaine POULIN-VITTRANT GREMAN UMR 7347, CNRS, Université de Tours, INSA-CVL

E-mail: [email protected] Abstract Recent advancements in nanotechnology has led to the development of diverse electronics devices such as nanowire (NW) based transistors1, sensors2 or energy harvesters3. Such electronic devices are of great interest to academia as well as for industries. ZnO NWs are potential candidates for such applications, due to their excellent electrical and optical properties. However, a low cost and scalable fabrication technique is essential for the synthesis of ZnO NWs, in order for them to be used in industry. Hydrothermal (HT) synthesis of ZnO NWs have shown to operate at low temperatures (< 100°C)4,5 in comparison with the VLS growth techniques (>700°C)6, thus making them compatible with flexible substrates. First I will present a facile, cost-effective and industrially scalable process flow for the fabrication of high performance stretchable nanogenerators (NG) on polydimethylsiloxane substrate. The NG device exhibits excellent performance with a 35 μW peak output power achieved from a 8 cm2 device under a pressure of 100 kPa. Moreover, we investigated ZnO nanostructures for FETs on both conventional rigid (Si/SiO2) and unconventional flexible substrates (polyethylene terephthalate PET). The electrical characterization results (field-effect mobility, on/off current ratio, sub-threshold slope) reveal the potential of the present nanomaterials for high performance electronics. The key issues of efficient NGs and FETs will be presented, taking into account the technological constraints. This opens horizons for integrating high quality ZnO nanostructures as active semiconducting elements for autonomous flexible electronic circuits. References: 1 Opoku C. et al., Solution processable multi-channel ZnO nanowire field-effect transistors with organic gate dielectric. Nanotechnology 24 (2013) 405203 2 Kang M. et al., Fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires and BaTiO3 -added SiO2 capping layers. Phys. Status Solidi 212/9 (2015) 2005-2011 3 Li X. et al., 1D Piezoelectric Material Based Nanogenerators: Methods, Materials and Property Optimization, Nanomaterials 2018, 8, 188 4 Dahiya A. S. et al., Organic/Inorganic hybrid stretchable piezoelectric nanogenerators for self-powered wearable electronics, Advanced Materials Technologies (2017) 1700249 5 Slimani Tlemcani T. et al., Deposition time and annealing effects of ZnO seed layer on enhancing vertical alignment of piezoelectric ZnO nanowires, Chemosensors 7(1) (2019) 7 6 Dahiya A. S. et al., Flexible organic/inorganic hybrid field-effect transistors with high performance and operational stability, ACS Appl. Mater. Interfaces 9 (1) (2017) 573–584


8

WINV-3 Understanding the Optical Properties of Luminescent Semiconductor

Nanocrystals

A. Priyam Dept. of Chemistry, School of Physical and Chemical Sciences, Central University of South

Bihar, SH-7, Gaya-Panchanpur Road, Gaya- 824236 *Corresponding Author, email: [email protected]

Abstract Nanoscale semiconductor materials typically show behaviour which is intermediate between that of a macroscopic solid and that of an atomic or molecular system. In order to rationalize (and predict) the physical properties of nanoscale materials, such as their electrical and thermal conductivity, or their absorption and emission spectra, their energy level structure needs first to be determined. Many properties specific to nanosized materials are related to the type of motion the charge carriers are allowed to execute when they are forced to dwell in confined structures. The unusual characteristics of these systems can only be explained by the laws of quantum mechanics [1,2]; the behaviour of the particles inside them being obtainable by solving the related Schrödinger equation. To understand, we take a simple example of quantum confinement, namely, ‘electron in a box’. This kind of quantum confinement can also be created in real structures by exercising sufficient control of the dimension of the particles by the appropriate processes. To achieve a discrete evolution of energy levels, the length scale of a semiconductor particle should become comparable to exciton Bohr diameter. If a semiconductor nanostructure is prepared such that only one dimension satisfies the size requirement, one has a quantum-well structure, two dimensions –a quantum wire and if all the three dimensions are sufficiently small, one has a quantum dots. The spatial confinement of charge carriers is maximized in quantum dot, where no dimension is available for the excitons to execute a free motion, therefore they are also called 0D materials and the term ‘dot’ also symbolizes the lost dimensions. The quantum confinement is clearly evidenced by the blue shift in the absorption edge with decreasing size[3]. As compared to bulk material, the radiative recombination of electron-and hole is more pronounced because of decreased electron-phonon coupling in quantum dots. These nanocrystals also exhibit size dependent luminescence with narrow emission spectra and broad excitation [4]. For some of the semiconductors like CdSe and CdTe, particle size can be tuned to get any desired emission in the visible range with photoluminescence quantum efficiency (PLQE) as high as 70-85%[1-3] This makes them invaluable for several biological and device applications. References 1. A. L.Efros, D.J. Lockwood, L. Tsybeskov, Springer Science, New York , USA, 2003 2. A. Rogach, Springer Verlag, Vienna, Austria, 2008 3. K. D. Sattler, CRC Press, Taylor and Francis Group, Boca Raton, USA, 2011. 4. S. Patra, B.Bhushan, A. Priyam, Dalton Transactions, 2016, 45, 3918


9

WINV-4 Quantum Dots and their diverse applications

Mr. Sovan Kumar Patra

Ferro Alloys Minerals Research Group, Tata Steel R&D, Jamshedpur, India Abstract Unique Size dependent Quantum Dots are fascinating and finds widespread commercial application especially in the field of optoelectronics such as light emitting diode and photovoltaic cells. They were of great interest as the photo luminescent properties can be significantly enhanced by optimization their synthetization processes. The emission wavelength depends on the size of the QDs, fluorescence during the synthesis process can easily be regulated by change of size. The tunable bandgap makes it well prominent in the application of photocatalysis and electrocatalysis. They also performed significantly well in comparison to traditional organic dyes used in modern biological analysis. However, the control of their size is still a challenge when scaled up industrially for synthesis of high quality quantum dots. Key problems need to be addressed in terms of producing tools, the modifying of QDs optical properties and technological faults in QDs interfaces to improve performance. References: 1. Semiconductor Nanocrystals: From Basic Principles to Applications, ed. A. L.Efros, D.J. Lockwood, L. Tsybeskov, Springer Science, New York, USA, 200s3. 2. Semiconductor Nanocrystal Quantum Dots: Synthesis, Assembly, Spectroscopy and Applications, ed. A. Rogach, Springer Verlag, Vienna, Austria, 2008. 3. Handbook of Nanophysics: Nanoparticles and Quantum dots, ed. K. D. Sattler, CRC Press, Taylor and Francis Group, Boca Raton, USA, 2011.


10

WINV-5 Advances in Piezoelectric Nanomaterials: Growth, Device Modelling, and

Applications

Alluri Nagamalleswara Rao Nanomaterials and Systems Lab, Dept. of Mechatronics Engineering, Jeju National University,

South Korea

Abstract The next generation of electronic devices mainly depends on the flexibility, adaptability, portability, cost-effective fabrication approaches along with the better functional properties of nanomaterials. The smart electronic device, sensor technology relay on the four major components, such as active sensing material, processing channel, interfacing unit, and a battery source. The extensive use of piezoelectric nanogenerator (PNG), actuator, transducer and sensor devices in the commercial market highly depend on the type of material used, functional properties, synthesis conditions, and device modeling parameters. Over the last decade, significant progress happens on the growth of piezoelectric nanostructures or sensing materials (Nanowires, Nanosheets, Nanowalls, etc.) by cost-effective synthesis routes, which are useful to develop the flexible PNG and self-powered sensors (SPSs). The advancements in the design of flexible PNG and its output power performance, suggesting that it can act as a sustainable micro-power source to power up low power electronic devices or can work as SPS. The PNG/SPS technology has many benefits over conventional energy harvesting technology. The advantages are saving the usage of natural resources (coal, gas, and fossil fuels), converting the abundant waste mechanical motions (wind/water flow, vehicle/human body motions) into green electricity, and removal of battery components. This talk mainly discussed the growth approaches, device modeling techniques, and the critical fabrication parameters to develop multiple smart applications in electronic, biomedical, and surveillance applications. Keywords: Piezoelectric nanomaterials, nanogenerators, self-powered sensors, growth techniques, flexibility


11

WINV-6 COVID19-Human physiological tracing dielectric sensors

Ashok Kumar*1,2

1CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, Delhi 110012, India

2Academy of Scientific and Innovative Research (AcSIR), CSIR- National Physical Laboratory Campus, Dr. K. S. Krishnan Road, Delhi 110012, India

*Corresponding author: [email protected]

Worldwide COVID19 has changed the prospect of human life. There are always two sides to a coin, i.e. positive and negative. So COVID19 also comes with some positive and some negative notes, human beings are confined in a limited place and have limited access to medical and essential facilities due to COVID and NON-COVID patients. However, due to confinement, online service is an essential and easy way to reach the common people, in terms of scientific knowledge or commodities. In this regard, I will discuss the development of non-contact IR sensors based on piezoelectric materials/devices which are used to measure the human body temperature almost everywhere to prevent the COVID cases and its contagious effects. The low-cost portable IR sensors are very useful for fast, accurate, and precise detection of human body temperature. I will also discuss the development of blood pressure sensors which are made of a dielectric and flexible polymer which may further extend the understanding of the physiological phenomena of COVID19 patients as well as the healthy and cheerful soul.


12

INV-1 Emerging Two-Dimensional Lateral Heterostructures for Optoelectronic

Devices

Prasana Kumar Sahoo

Material Science Centre, Indian Institute of Technology Kharagpur, WB, 721302, India Email: [email protected]

Abstract

Two-dimensional (2D) transition metal dichalcogenides (TMDs) and their heterostructures have opened a new and rich field of research with exciting properties and novel applications in ultra-smart and flexible optoelectronic devices, including tunneling transistors, diodes, memory devices, LEDs, solar cells, photodetectors, quantum emitters and sensors. There are enormous possibilities to combine different types of 2D TMDs in vertical and in-plane directions for controlling and manipulating carriers such as electrons, holes, excitons, polariton, and for fundamentally new discoveries. To dates, several proof-of-principle 2D devices mostly relay on mechanical exfoliation of different van der Waals materials. This approach can result in interfacial contamination during the transfer process, and lacks scalability. In addition, the optoelectronic performance of most 2D heterostructure based devices falls far below the theoretical predicted values. Hence, direct fabrication of 2D heterostructure is the need of the hours. Unlike vertical heterostructures, lateral heterostructures are possible only via direct growth, which can offer tremendous opportunities for engineering the formation, confinement and transport of charge carriers at the ultimate thickness limits. Even though several TMDs heterostructure growth strategies have been reported, however, rational understanding of the growth mechanism of TMDs based heterostructures is still in its fancy, looking towards controlled physical property manipulation and large-scale applications. These major challenges will be discussed. Recently, we demonstrated a novel and scalable protocol for the direct growth of wide range of high-quality in-plane TMDs heterostructures in the form of MoX2-WX2 (where X= Se and/or S) with controlled number of layers (monolayer and bilayer) via water-assisted chemical-vapor-deposition process.1,2 Our method offers greater flexibility for the in-situ creation of multiple heterojunctions as well as manipulating degree of alloying across hetero-interfaces.1-5

Electrical transport measurements revealed diode-like responses across the 2D lateral junctions. We found that bilayer heterostrcures are as robust as monolayer, in terms of optoelectronic characteristics such as observation of room temperature electroluminescance.2 Future challenges using 2D heterostructures for optoelectronic device applications will be discussed.

References: [1] P. K. Sahoo et al., Nature, 553, 63–67 (2018) [2] P. K. Sahoo et al., ACS Nano 13, 12372-12384 (2019) [3] P. K. Sahoo et al., Optical Materials Express 9, 1620-1631 (2019) [4] C. E. Stevens, J. Paul, T. Cox, P. K. Sahoo et al., Nature Communication 9, 3720, (2018) [5] T. Afaneh, P. K. Sahoo et al., Advance Functional Materials 28, 1802949 (2018)


13

INV-2

Non-linear absorption behavior of carbonaceous nanomaterials for laser

safety application Balaram Sahoo

Materials Research Centre, Indian Institute of Science, Bangalore-560012 India Abstract Optical communication in optoelectronics is one among the emerging areas, where laser based devices are extensively used. Exposure to the high intensity laser has many hazardous effects on human health. Hence, laser safety is considered to be very important nationally and internationally. Laser shields, at present, have highly absorbing non-linear optical materials. Absorption of laser beam in these materials is related to various non-linear inelastic processes such as multi-photon absorption (2-photon absorption (2PA), 3-photon absorption (3PA), etc.), free carrier absorption (FCA), excited state absorption (ESA) and saturated absorption (SA) etc. [1-4]. With the emergence of nanotechnology, the electronic properties of non-linearly absorbing nanomaterials can be tuned to further enhance the non-linear absorption (NLA) behavior. Among the available nanomaterials carbon based materials are of excellent choice due to their light-weightiness, corrosion resistance, high electrical conductivity, ease of tuning the concentration of defects and related electronics properties. In this talk, I will demonstrate the science and technology related to synthesis of carbonaceous nanomaterials and study of their NLA behavior towards laser safety applications. Among the carbonaceous materials, the carbon globules and carbon nanotubes embedded with iron (Fe), cobalt and nickel nanoparticles cores-graphitic shells are exceptionally important. These materials were synthesized by a single-step pyrolysis technique. The effect of degree of graphitization and thickness of the graphitic shell on the metallic nanoparticles, were found to be the important parameters controlling and enhancing the NLA property in these materials. The attractiveness of our studied materials lies in their excellent NLA behavior, making them preferable candidates for their direct use in laser safety application. References:

R. Kumar, A. Kumar, N. Verma, AV Anupama, R. Philip, B. Sahoo, Carbon 153, 545-556 (2019)

A Kumar, R Kumar, N Verma, AV Anupama, HK Choudhary, R Philip, B. Sahoo, Optical Materials 108, 110163:1-10 (2020)

R Kumar, A Kumar, N Verma, V Khopkar, R Philip, B Sahoo, ACS Applied Nano Materials (2020). DOI: 10.1021/acsanm.0c01284

R Kumar, A Kumar, N Verma, R Philip, B Sahoo, Journal of Alloys and Compounds (2020). DOI:10.1016/j.jallcom.2020.156665


14

INV-3

Designing and development of novel room temperature multiferroics based on transition metal oxides

Amritendu Roy,

Asstt. Prof., SMMME, IIT Bhubaneswar

Abstract Multiferroics are technologically exciting class of materials with applications in diverse areas ranging from advanced sensors to digital memory, energy harvesting and so on. However, they are not nature-abundant and only few compounds demonstrate tangible effect at temperatures suitable for commercial device applications. Thus, designing and development of novel multiferroics with room temperature or close-to-room-temperature effect is a challenging area of research for materials engineers. The present work discusses a novel methodologies to impart multiferroic effect in transition metal oxides. Experimental observation substantiates first-principles electronic structure calculations.

INV-4


15

Room temperature multiferroic properties of rare earth doped Ho, Gd and

Ce - BiFeO3 ceramics-Comparative Study

Dipti R. Sahu Department of Natural and Applied Sciences at the Namibia University of Science and

Technology (NUST) Windhoek, Namibia *Corresponding author, Phone: +264-2072783, Fax: +264-61-207-9783

Email: [email protected] Abstract: Multiferroics is a special and rare class of unique materials that exhibits the coexistence of two or more ferroic order parameter particularly in single phase materials at specific temperature. In an attempt to enhance multiferricity in BiFeO3, rare earth (Gd, Ho and Ce) doped with BiFeO3 bulk ceramics are prepared by novel slow step sintering schedule. The doped material shows monophasic character with significant reduction of leakage current. Incorporation of rare earth ion (for example Gd) nucleates and develops orthorhombic grain growth habit by suppressing the original rhomohedral phase. We observed room temperature enhanced P-E as well as M-H loop. These developed materials have the potential ability to couple both ferroelectric and magnetic order parameter which is the basic blocks of future generation spintronics devices. Detail comparative study along with important experimental findings wll be present during presentation. Key words: Multiferroics, Doping, BiFeO3, Ferroelectric, Magnetic

INV-5


16

Basic understanding and design and development of low cost Blood Pressure Measurement Devices

Ashok Kumar*1,2

1CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, Delhi 110012, India

2Academy of Scientific and Innovative Research (AcSIR), CSIR- National Physical Laboratory Campus, Dr. K. S. Krishnan Road, Delhi 110012, India

*Corresponding author: [email protected]

Abstract High Blood pressure, i.e. hypertension is one of the major causes of un-natural death and high-risk illness all around the world. The blood pressure and other vital human body parameters become more important for developing and under-developed countries to improve the health of common people, and the healthcare systems. It is the duty of doctors, researchers, and civic societies to extend awareness among the common people as well as intellectuals to understand the importance of blood pressure for their fitness and a healthy economy. Early and accurate detection of blood pressure may prevent heart failure, kidney dysfunction, and impairment in other vital human organs. More than 30% of the deaths are due to the wrong and untimely measurement of hypertension in India. This talk relates to the path for the discovery of human blood pressure and its measuring devices. A low-cost affordable blood pressure measuring devices will be discussed which may further extend to various physiological applications.


17

INV-6 Soft Chemistry Routes for tunable plasmonic nanomaterials and some interesting

applications thereof

Amiya Priyam Dept. of Chemistry, School of Physical and Chemical Sciences, Central University of South

Bihar, SH-7, Gaya-Panchanpur Road, Gaya- 824236

Abstract Silver and gold nanocrystals have caught the imagination of scientific community worldwide due to the unique optical phenomenon called “Surface Plasmon Resonance (SPR)”. The talk describes the soft chemistry approaches that we have developed to obtain plasmonic nanocrystals of silver having tunable size, shape and structure. Application of such nansostructures in surface-enhanced Raman spectroscopy (SERS), solar-catalysis and enhanced luminescence bio-imaging and cancer therapy will also be discussed. The choice of silver stems from the fact that it has highest quality factor for surface plasmons and greater photothermal efficiency in the spectral region of 400-1200 nm. Thus, it presents an opportunity to study the plasmonic properties over wide wavelength region and harness them for suitable applications.

Hollow silver nanoshells with tunable plasmon bands were synthesized by employing a combination of mild reductant (hydrazine hydrate) and a mild stabilizer (sodium citrate). The plasmon peak was tuned in a wide range from 460 nm to 605 nm. In the second part, hydrogen-bonding interaction driven single-step synthesis route was developed to obtain spectrally narrow, tunable anisotropic silver nanocrystals. Shapes have been varied from nanospheres to nanoplates to nanopyramids. Concomitantly, a versatile tunability of plasmon peaks from visible (500 nm) to near-IR (1010 nm) region has been achieved by tailoring the hydrogen bonding interaction between mild stabilizer, citrate, and mild reductant, hydrazine hydrate. Furthermore, the Anisotropic Silver NCs vis-à-vis spherical have been found to act as an excellent SERS tool for the detection of metal ion contaminants such as of As (III), Cr(III) and Cr(VI) Hollow silver nanocubes were found to be very good solar photocatalyst in the entire visible range at sub-picomolar level. In another application, the plasmonic gold nanoshell was overcoated onto luminescence upconversion nanocrystals (UCNs). These the nanoparticles were then developed as a dual mode imaging probe for cancer cells.

References: 1) P.Bose, A. Priyam et al., RSC Advances., 2020 (accepted), 2) B. K. Dadhich, B.Bhushan, A.Saha & A.Priyam ACS Applied Nano Materials, 2018, 1,4294. 3) B. K. Dadhich, B.Bhushan, A. Priyam, Official Journa of the Patent Office, Govt. of India,

Issue No. 51/2019 Dated 20/12/2019, page no. 61412, Application No.201931047638 A 4) S. Pattanayak, A. SwarnKar, P. Paik & A. Priyam, RSC Advances, 2017, 7, 45911. 5) B. K. Dadhich, B. Bhushan, R. K. Choubey, & A. Priyam, Photochem & Photobiol. Sci, 2017,

16, 1556 6) S. Pattanayak, A. Priyam and P. Paik, Dalton Trans., 2013, 42, 10597. 7) S. Pattanayak, A. Swarnkar, A. Priyam and GM Bhalerao, Dalton Trans., 2014, 43, 11826 8) A. Priyam, N. Idris and Y. Zhang, J. Mater. Chem., 2012, 22, 960


18

INV-7 Gallium ferrite nanostructures for ferroelectric memory applications

Somdutta Mukherjee a, Monali Mishra a,b, and Amritendu Roy c

a Materials Chemistry Department, CSIR-IMM Bhubaneswar, Orissa-751013 E-mail: [email protected]

b Department of Chemistry, VSSUT Burla, Orissa-768018 E-mail: [email protected]

c School of Minerals, Metallurgical, and Materials Engineering, IIT Bhubaneswar, Orissa-752050

E-mail: [email protected]

Abstract Multiferroics, exhibiting simultaneous co-existence of long-range electrical, magnetic, and elastic order in a single phase have been studied extensively due to their potential in futuristic magnetoelectric memory, spintronic as well as energy harvesting applications. Apart from these possible technological applications multiferroics also present intriguing physics related to the coexistence of multiple ferroic orders with the contradictory origin and their coupling. Among the existing, very few single-phase room temperature multiferroics Gallium ferrite (GaFeO3) is a technologically exciting system that demonstrates ferroelectricity with polar orthorhombic Pc21n symmetry and tunable ferrimagnetism. GaFeO3 single crystals suffer from poor leakage characteristics and are unable to demonstrate ferroelectric polarization switching. Our studies on epitaxial GaFeO3 thin films grown by pulsed laser deposition, PLD showed 180◦ phase-shifted piezoelectric nanodomains at room temperature. PLD epitaxial growth is an expensive technique of growing highquality thin films of a small area on costly single crystalline substrates unfavorable for technological applications. Therefore, we grew highly oriented GaFeO3 thin films on commercially available platinized-silicon substrates using a cost-effective solution deposition technique that demonstrate room temperature multiferroism with polarization switching at the poled ferroelectric domains. However, the polarization reversal costs a very high coercive field inappropriate for memory device applications. In recent days, novel functionalities of nanocrystalline systems have been achieved by varying geometries, size, and crystallographic structure of the exposed surfaces. In this context, GFO nanocrystals were synthesized with another polar crystal symmetry, rhombohedral R3c using facile hydrothermal conditions for the first time followed by heat treatment. Structural phase evolution is characterized using X-ray diffraction, Raman spectroscopy, electron microscopy, and temperaturedependent impedance spectroscopy. The ferroelectric nature of the novel R3c phase has been studied using piezo-response force microscopy and macroscopic polarization hysteresis measurement. Polar rhombohedral R3c GaFeO3 opens up the possibility of the usage of gallium ferrite nanocrystals in ferroelectric memories. Keywords: Ferroelectrics, Gallium Ferrite, Thin film and nanostructure


19

INV-8

Flexible, Multifunctional Piezoelectric Materials for Nanogenerators and

Self-PoweredSensors

Nagamalleswara Rao Alluri,and Sang-Jae Kim* Nanomaterials and SystemsLab, Dept. of Mechatronics Engineering,

Jeju National University, South Korea. E-mail:[email protected]

Abstract The modern society’s foremost parameter is to make things in amore accessiblemanner, saving natural resources, andeco-friendly operation. Also,the criticalpoint is to remove the toxic, complex battery sources by the alternative energy sources, which arecoming from the surrounding environments.Multifunctional piezoelectric materials gained great attention due to a broad range of scopes such as flexibility, adaptability to measure non-linear surface motions, large scale fabrication, and high output power, accepting high mechanical force and low leakage current losses. The present work discussed the development of sustainable energy harvesting piezoelectric materials, composite structures, and human hair-sized wires with cost-effective, lower time consuming and eco-friendly techniques. Single hemispherical shape-flexible composite strip piezoelectric nanogenerator (HS-CSPNG) generates 130 V/800 nA upon hand force. Similarly, flexible wire shaped-PNG (FW-PNGs) produces a peak-to-peak voltage/current 7 V/600 nA upon 2 N. HS-CSPNG device can work as a self-powered muscle monitoring system (SP-MMS) to measure maximum human body part movements, i.e., spinal cord, throat, jaw, elbow, knee, foot stress, palm hand/finger force and inhale/exhale breath conditions at a time or at variable time intervals. FW-PNG used as a power source to drive the TiO2 NSs/Ti-wire based-UV sensor via a parallel connection between them. This type of adaptable, flexible strip/wire based PNGs are highly suitable to measure any non-linear surface motions/rotations compared to traditional planar PNG devices can be a potential micro-power source to drive low power consumed electronics. Keywords:Piezoelectric composite strips, Nanogenerator,Self-powered sensor, Hysteresis loop,Nanomaterials


20

YS1

Low temperature synthesis and photoluminescence properties of red emitting Mg2SiO4:Eu3+ nanophosphor for near UV light emitting diodes

Ramachandra Naik1, S.C. Prashantha2, H. Nagabhushana3, S.C. Sharma4,

B.M. Nagabhushana5,H.P. Nagaswarupa2. H.B. Premakumar 6,

1Department of Physics, New Horizon College of Engineering, Bangalore-560103, India. 2Department of Science, East West Institute of Technology, Bangalore-560091, India.

3Centre for Nano Research (CNR), Tumkur University, Tumkur-572103, India. 4B.S.Narayan center of excellance for advanced materials, Department of Mechanical Engineering, B.M.S. Institute of Technology, Yelahanka, Bangalore-560 064, India.

5Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore - 560 054, India. 6Department of Physics, Acharya Institute of Technology, Bangalore-560107, India.

* Corresponding author. Tel.: +91 7204408041 E-mail: [email protected]

Abstract

A simple and low-cost solution combustion method was used to prepare Eu3+ (1-11 mol%) doped

Mg2SiO4 nanophosphors at 350 0 C using metal nitrates as precursors and ODH

(Oxali di-hydrazine) as fuel. The final products were well characterized by powder x-ray

diffraction (PXRD), fourier transform infrared spectroscopy (FTIR), scanning electron

microscopy (SEM) and UV-visible absorption (UV-Vis). The PXRD patterns of the as-formed

products show single orthorhombic phase. The crystallite size was estimated using Scherrer’s

method and found to be in the range 20-25 nm. The effect of Eu3+ cations on the luminescence

properties of Mg2SiO4:Eu3+ nanoparticles were understood from the luminescence studies. The

phosphors exhibit bright red emission upon 393 nm excitation. The characteristic emission peaks

recorded at ~577, 590, 612, 650 and 703 nm (5D0→7Fj=0,1,2,3,4) were attributed to the 4f–4f intra

shell transitions of Eu3+ ions. The intensity of red emission was found to be related with the

concentration of intrinsic defects, especially oxygen-vacancies, which could assist the energy

transfer from the Mg2SiO4 host to the Eu3+ ions. The Commission International De I-Eclairage

(CIE) chromaticity co-ordinates were calculated from emission spectra, the values (x,y) were very

close to National Television System Committee (NTSC) standard value of red emission.

Therefore, the present phosphor was highly useful for display applications.

Keywords: Mg2SiO4:Eu3+, Combustion technique, Nanophosphor, Photoluminescence, CIE.


21

YS2 Exemplary Encapsulate Feeding in Stir Casting for Quality Composites

Mr.A.Manivannan M.E (PhD)

Assistant Professor, Department of Mechanical Engineering, M.Kumarasamy College of

Engineering, Karur – 639113, Tamil Nadu, India

E-mail id: [email protected] Whatsapp: +91-9677311457

Abstract: The focus of this paper aims at addressing the contemporary issues, i.e., agglomeration

and non-uniform dispersion of reinforcement particles prevailing with stir casting method of

fabricating metal matrix composites. Although it has been dealt with different approaches, viable

optimal technique has not evolved so far. A novel encapsulate feeding technique aimed to

accomplish uniform dispersion of ceramic reinforcement particles. In this research, we have

chosen Aluminum Alloy 6061 (AA 6061) as a matrix material and cubic boron nitride (c-BN) as

a reinforcement companion to form a unique combination of advanced aluminum composites to

prove this innovative feeding technique. Two percent of Mg added in every casting as a wetting

agent to improve binding nature between metals and ceramics. The Aluminum Boron Nitride

(Al/BN) composites are fabricated through bottom type of pouring stir casting machine.

Metallographic characterization ensures uniform particle dispersion. The composites are tested

using pin-fin apparatus and Xe-flash laser setup and found enhanced (12%) thermal properties

than pure AA 6061.

Key Words: Encapsulate; Feeding; Stir; Casting; Bottom; Tapping; Thermal; Properties.


22

YS3 Effects of Magnetic field on resistive switching in multiferroic based

Ag/BiFeO3/FTO RRAM device Anjan Kumar Jena1a , Ajit Kumar Sahoo2a, and Jyoti Ranjan Mohanty3a

a Nanomagnetism and Microscopy Laboratory, Department of Physics, Indian Institute of Technology

Hyderabad, Kandi, Sangareddy, Telangana, India-502285, [email protected], +91 96581919295

Abstract — We report the effects of the magnetic field on resistive switching behavior in

Ag/BiFeO3/FTO RRAM device through conventional I-V characteristics. The switching of device

from high resistance state (HRS) to low resistance state (LRS) at a certain threshold voltage (Vt)

evident a shift under the magnetic influence. The shifting of Vt towards higher voltage is due to

the appearance of the Lorentz force and magnetoelectric effect when the magnetic field is applied

perpendicular to the flow of current. The resistance of HRS and LRS increases simultaneously

under the application of the magnetic field due to the induced Hall resistance effect. The OFF/ON

ratio ~12, which is repeatable for 100 multiple cycles. The discrete RESET state of the device is

achieved by pulse-width and pulse-height modulation. Substantially, the resistance of these states

increases systematically under the action of the magnetic field. The control of resistance states

with pulse-height and magnetic field in Ag/BiFeO3/FTO promise for future multilevel non-

volatile memory technology.


23

YS4

Facile single phase synthesis of Sr, Co co-doped BiFeO3 nanoparticles for boosting photocatalytic and magnetic properties

A. Puhana, B. Bhushana, S. Satpathyb, S.S. Meenac, A.K. Nayakd, , D. Routa*

aSchool of Applied Sciences (Physics), KIIT Deemed to be University, Bhubaneswar 751024, India bLaser and Functional Materials Division, Raja Ramanna Institute for Advanced Technology Indore, 452013, India

cSolid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India dDept. of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, India

email:[email protected], Mob-9437603327 Multiferroics belong to the family of multifunctional oxides in which ferroelectric, ferromagnetic and ferroelastic behaviors coexist in the same materials system. Among them, BiFeO3 (BFO) is a noticeable multifunctional candidate for possible technological applications because of its room temperature magnetic and ferroelectric properties having high Curie (1103K) and Neel (643K) temperature. Furthermore BFO shows photocatalytic performance in UV light rather than visible light which can be used for degradation of various organic dyes. However, there are some drawbacks like appearance of secondary phase, low magnetization value, high dielectric loss value and small remnant polarization, obstruct the exploitation of BFO in its practical application. Therefore, several attempts such as doping of suitable elements both at A- and B-site of BFO or modifications in process parameters or reduction of particle size to nano scale, have been adopted by researchers to improve the multiferroic as well as photocatalytic properties of BFO. In this report, pure phase BiFeO3 and Bi0.98Sr0.02Fe1-xCoxO3 (x=0.01, 0.03, 0.05 and 0.07) nanoparticles were successfully synthesized by facile sol-gel route. A significant reduction of average particle size (64 to 41 nm) was observed co-doped BFO nanoparticles due to slower growth rate. Mössbauer spectra confirmed the change in oxidation state of iron from Fe3+ to Fe2+ for higher doping concentration of Co. Further, doping of Sr and Co into A- and B- site of BiFeO3 lattice remarkably enhanced the saturation magnetization value from 0.8 emu/g to 2.3 emu/g and remnant magnetization from 0.08 emu/g to 0.532 emu/g. The improvement of magnetic properties was attributed to the breaking of cycloidal spin structure, more number of uncompensated spin on the surface, and oxygen vacancies. Moreover, the specific surface area was found to be highest 53 m2/g for 7% Co doped BFO as compared to pure BFO, due to its smaller average particle size. A tuning of optical band gap from 2.37 eV to 1.87eV was observed by co-doping of Sr, Co which confirms the enhancement of the photocatalytic performance of the synthesized samples. 7% Co doped sample exhibited a high photocatalytic degradation of RhB dye as compared to other samples. This was due to larger specific surface area, smaller average particle size and lower band gap. The recycling ability of the material was tested and found to be negligible (~1%) decrease in degradation efficiency after ten cycles, suggesting highly stable for practical application. The current investigation illustrates the importance of Sr, Co co-doped BFO nanoparticles for the application in various devices and degradation of hazardous organic dye. Keywords-Nanoparticles, co-doping, magnetic property, photocatalysis


24

YS5 Engineering the resonance modes for enhanced magnetoelectric coupling in

bilayer laminate composites for energy harvesting application

Atal Bihari Swain, S. Dinesh Kumar, Venkatachalam Subramanian and Pattukkannu Murugavel

Affiliation: Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India

Email id: [email protected]

WhatsApp number: 9962878708

Abstract

The magnetoelectric (ME) effect in composites, a strain mediated coupling phenomenon between

piezoelectric and magnetostrictive phases, has a wide range of technological applications. In this

article, the ME coupling phenomena are explored in Pb-free piezoelectric, 0.5Ba(Zr0.2Ti0.8)O3-

0.5(Ba0.7Ca0.3)TiO3 (BZT-BCT) and piezomagnetic NiFe2O4 bilayer laminate composites. The

direct and converse ME coupling strengths found to be enhanced at the electromechanical

resonance modes than the off-resonance frequencies. Here, it is proposed to further enhance the

ME coupling strength at electromechanical resonance modes by the in-phase superimposition of

the radial and second bending modes via varying the bilayer thickness, which in turn vary the

volume fraction of the bilayer. The proposed enhanced ME coupling is experimentally

demonstrated at theoretically envisaged bilayer thickness of ~ 1.8 mm. This results in a large direct

ME coupling coefficient of 22.5 , which is around 100% more than the values

observed at individual resonance modes. The results are further validated by the calculations from

the theoretical models. The method adopted in this work gives a roadmap to the significant

enhancement of ME effect in laminate composites. value

Keywords: Magnetoelectric effect, laminate composites, Resonance, Energy harvesting


25

YS6

Hollow silver nanostructures: The role of capping agents in tailoring the shape, structure and plasmonic properties

Bhavesh Kumar Dadhich1, Bhavya Bhushan1, and Amiya Priyam2,*

1Department of Physics, School of Applied Sciences, Kalinga Institute of Industrial Technology, Deemed to be University, Bhubaneswar-751024, India, Email: [email protected],

Phone:+91-9462716175 2Department of Chemistry, School of Physical and Chemical Sciences, Central University of

South Bihar, SH-7, Gaya-Panchanpur Road, Gaya-824236, India *E-mail: [email protected]. Phone: +91-8521147173.

Abstract: Shape- and structure- directing ability of capping agents, namely, acetic acid and folic

acid (FA) has been analyzed in the synthesis of hollow plasmonic nanostructures via nanoscale

Kirkendall effect. FA was found to possess both the abilities as spherical solid Ag2O

nanoparticles (NPs) transformed into hollow silver nanocubes (HAgNCs). In contrast, acetic acid

(AA) acted as a structure-directing agent only as the transformation from solid Ag2O nanospheres

to hollow Ag nanospheres is observed. FA capping leads to enhanced plasmon tunability range

from 535-640 nm in the hollow silver nanostructures. The size and shape of nanostructures are

analyzed by high-resolution transmission electron microscopy (HRTEM). HRTEM revealed that

the outer diameter of AA-capped HAgNSs is 50±10 nm while edge-length for FA-capped

HAgNCs is 100±15 nm. The diameter of inner void space was found to be 30±5 nm and 43±5

nm for the HAgNSs and HAgNCs, respectively. The phase purity of the hollow nanostructures

was confirmed by XRD and EDX measurements. Due to unique structural and plasmonic

features, FA-capped HAgNCs are well-suited for biomedical applications.

Keywords: Surface plasmon resonance (SPR), nanoparticles, nanoshells, nanocubes, HRTEM


26

YS7

Investigation on the discharge energy storage density of the Rb substituted Na0.5Bi0.5TiO3 relaxor ferroelectric and its suitability for the orthopedic

application

Krishnarjun Banerjee Ph.D. student

E- mail id: [email protected], Mobile no. 9642600537

Supervisor: Prof. Saket Asthana Department of Physics,

Indian Institute of Technology Hyderabad, Hyderabad, India

In this work, we have shown the application and grain size effect on the fundamental properties of the Rb substituted eco-friendly Na0.5Bi0.5TiO3 ferroelectric (Na0.5-xRbxBi0.5TiO3, where x=0, 1, 2, 3, 4 mol % and abbreviated as RB0, RB1, RB2, RB3, and RB4, respectively). By considering the practical implementation of the material, the recoverable energy storage densities of all compositions are analyzed. Simultaneously, to ensure the suitability of the compounds as an orthopedic implant, biocompatibility of all compositions is checked. The grain size is reduced with the substitution of Rb at the cation-site of the Na0.5Bi0.5TiO3. We have observed the variation in the interactions among the polar nano regions and decrement in the remanent polarization with the grain size refinement. This property helps to improve the recoverable energy storage density. This study also shows the development in the hardness property with the increment of the substitution. It is expected that the grain size plays a key role in the enhancement of the mechanical property. The excellent hardness of RB3 and RB4 (10.36 and 11.75 GPa, respectively) shows the pathway to use these materials as an orthopedic implant. To examine the biocompatibility of RB1, RB2, RB3, and RB4, the normal fibroblast cells were exposed to these compounds. The cells were seeded in a 6 well plate (1×105 cells/well) and were allowed to attach overnight. The non-toxic nature and good hardness of RB3 and RB4 exhibit the possibility to use these materials as an orthopedic implant. Being a piezoceramic, RB3 and RB4 have an advantage over a normal ceramic as an implant. Due to the piezoelectric property, the activity of the piezo-implant can be detected externally, so the anomaly of the implant can be diagnosed non-invasively. Usually, toxic lead based piezoelectric material is embedded in the normal ceramic implant to diagnose the activities of the implant. This process avoids the revision surgery. Due to having piezoelectric and hardness property, our examined eco-friendly materials can be used as a whole implant; no lead based ceramic is required to embed in it. Hence, RB3 has the potential to become a non-toxic alternate to the current existing toxic lead based piezoceramics implants.


27

YS8

Nonstoichiometric charge defect induced relaxor antiferroelectric ordering in La modified Bi0.5 (Na0.80K0.20)0.5TiO3 relaxor ferroelectric

Lagen Kumar Pradhan Department of Physics, Indian Institute of Technology Patna, Bihta-801103

*Email Id: [email protected]; [email protected] WhatsUp No: 8538959818

Abstract The current research communities have been focused intensively toward alternative of lead

based functional materials due to its toxic in nature. Already some of the countries have initiated to restrict the use of lead based compounds. Therefore, research and development (R&D) on lead free compounds is growing significantly from last few years. Out of the several lead free compounds, Bismuth Sodium Titanate (Bi0.5Na0.5TiO3/BNT) is well known for its comparable dielectric, ferroelectric and piezoelectric properties with respect to lead zirconate titanate (PZT). It is because, the bismuth (Bi3+: 6s2) has lone pair electrons similar to Pb2+ which impacts greatly on the electrical properties of the perovskite compounds. To further improve the physical properties, BNT based solid solutions (binary as well as ternary) have been reported by the different research groups such as BNT-BaTiO3, BNT-Bi0.5K0.5TiO3, BNT-Ba0.7Sr0.3TiO3, BNT-K0.5N0.5NbO3, BNT-BTO-KNN, etc. As per the experimental results, BNT based solid solutions exhibit relaxor ferroelectric properties rather normal ferroelectric. Relaxor ferroelectrics show enhanced piezoelectric properties with high electrical energy storage density due to its pinched/constricted ferroelectric hysteresis loop. In the present work, effect of A-site nonstoichiometric in La3+ modified Bi0.5(Na0.80K0.20)0.5TiO3/BNKT solid solution on crystal structure and electrical properties have been investigated. Evolution of crystal structure from rhombohedral (R3c) to tetragonal (P4bm) symmetry with reduction of the lattice distortion has been observed. The Raman spectra analysis is well supported to the crystal structure study from the XRD patterns analysis. The presence of charge defects due to non-stoichiometric composition and the reduction of oxygen vacancies have been confirmed by the X-ray photoelectron spectra (XPS) of the respective elements. The FESEM (Field Emission Scanning Electron Microscopy) micrographs clearly show the reduction of grain size with the incorporation of La3+ in A-site of BNKT. The multiple dielectric anomalies near depolarization temperature (Td) & temperature at maximum dielectric value (Tm) in the temperature dependent dielectric curves ascribe the diffuse phase transition with relaxor ferroelectric nature. The dielectric anomalies at Td and Tm become more pronounce with the increase in addition of La3+ into BNKT lattice. The presence of charge defects with A-sites complexity leads to interrupt the long range polar ferroelectric domains and, forms the polar nanoregions (PNRs). The competition between ferroelectric R3c symmetry and non-polar P4bm symmetry with the addition of La3+ into the BNKT lattice induces an intermediate modulated phase, which exhibits the antiferroelectric in nature having pinched ferroelectric hysteresis loop and can be apply for energy storage applications. Keywords: Rietveld Refinement, Lattice distortion, Diffuse phase transition, Depolarization temperature and Polar nanoregions (PNRs).


28

YS9

Structural and Electrical properties of Bi3TiVO9 Ferroelectric Ceramic

aPrabhasini Gupta, bRajib Padhee, aP. K. Mahapatra, aR N P Choudhary and c Satyabati Das

a Department of Physics, Siksha ‘O’ Anusandhan University, Bhubaneswar-751030, Odisha, India bSchool of Physics, Sambalpur University, Jyotivihar, Burla, Sambalpur-768019, Odisha, India

cMetallurgical and Materials Engineering, IIT, Bhubaneswar-751007, Odisha, India Email: [email protected]

Telephone: (+91) 7873457497 (WhatsApp), 6370379739 Abstract Bi3TiVO9

(BTV), a member of Aurivillius family, has been fabricated by a mixed-oxide route at

high temperature. Room temperature structural analysis using X-ray diffraction data confirms the

crystallization of ceramic in the orthorhombic crystal structure. Surface morphological analysis

using field-emission scanning electron microscopic (FESEM) images and elemental study with

energy dispersive X-ray spectroscopy (EDX) reveal the uniform distribution of grains and

compositional elements of the prepared material, respectively. Based on the temperature and

frequency dependence of capacitive and resistive parameters, the electrical phenomena underlying

the sample are discussed. The contribution of grain and grain boundary towards the conduction

and relaxation mechanism is described by the complex impedance spectroscopy. The semi-

conducting property (negative temperature coefficient of resistance (NTCR)) behavior is observed

from the temperature dependent bulk resistance and J~E characteristics of the sample. The

frequency dependent ac conductivity of the system obeys the universal Jonscher’s power law with

conduction mechanism based on overlapping-large polaron tunneling model and correlated barrier

hopping model. Measurement of room temperature hysteresis loop confirms the existence of

ferroelectricity in the sample.


29

YS10

Static and Dynamic Magnetic Properties of Soft/Hard Ferromagnetic Bilayers

Sagarika Nayak

National Institute of Science Education and Research (NISER), Bhubaneswar Email id: [email protected]

WhatsUp number: 918480899053 Abstract: Soft/hard magnetic bilayers are studied widely for its application in permanent magnets and thermally assisted recording devices. Other than this, the fundamental study of the bilayers is emerging now a days. In this context, we have studied the static dynamic magnetic properties of soft (Co)/ hard (Co40Fe40B20) magnetic bilayers. The effect of interfacial exchange coupling of the magnetic layers on hysteresis loops, domain imaging, anisotropy energy and Gilbert damping is studied in the Co/CoFeB bilayers. Modulation of magnetic domains are found by the direct exchange coupling. We have deposited the magnetic bilayers in parallel and perpendicular configuration in order to study the effect of interface on the magnetic properties. We observed the tuning of Gilbert damping constant, coercive field (HC) by this new deposition methodology. Uniaxial magnetic anisotropy is found in these samples which is due to oblique angle of deposition in case of our deposition system. Also, we deposited the magnetic layers of different thicknesses and alternate the order for tuning of magnetic properties. We found higher values of HC when CoFeB is at the bottom. Thus, the interfacial exchange coupling is more when CoFeB is deposited at the bottom. Combination of uniaxial and six-fold anisotropies is found in these samples. Tuning of magnetic domain images is observed by alternating the order of magnetic bilayers. We observed the enhancement of Gilbert damping constant when CoFeB is deposited at the bottom due to the enhancement of interfacial exchange coupling. Thus, interfacial exchange coupling affects a lot to the static and dynamic magnetic properties and we investigated new deposition methodologies which is good both for application and fundamental study.


30

YS11

All-fiber self-powered wearable nano-tactile ferroelectric sensor

Sujoy Kumar Ghosh

Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Uljugun, Ulsan 44919, South Korea, Email id: [email protected], What’s up

number: +91 9062066209 Abstract Lightweight tactile sensor with multimodal capabilities such as, wearability, self-powered

operation, and mechanical robustness are of paramount importance in emerging portable

electronics that involves human–machine integration. In this effort, an all-fiber wearable

nanogenerator (NG) is designed, where, platinum (Pt) nano-particles (NPs) interfaced highly

aligned 1D ferroelectric poly(vinylidene fluoride) (PVDF) nano-fibers arrays (Pt-PVDF NFs) is

sandwiched between flexible conducting fabrics, consisting of interlocking micro-fibers arrays.

In-situ ternary synergistic enhancement of piezoelectricity in nano-dimensionally confined 1D Pt-

PVDF NFs arises from extensional force exertion on electrified solution jets, mechanical

stretching on rapid collection and Pt-NPs interfacing with macromolecular PVDF chain. As a

consequence, mechanically robust structure of Pt-PVDF NFs possess 5 times enhanced

piezoelectric figure of merit (FoMp ≈ 5×10−11 Pa−1) in comparison to pure PVDF nanofibers (FoMp

≈ 9.7×10−12 Pa−1). In addition, owing to the geometrical stress confinement effect, the Pt-PVDF

NFs based piezoelectric nanogenerator (PtPENG) is proven to be a high-performance (output

voltage, Voc~ 30 V and current, Isc~ 6 mA cm−2) and durable (~ 90,000 cycles) power generating

device (output power, 22 μW cm−2) for small power consumer electronics. Importantly, PtPENG

is demonstrated as a static strain-sensitive wearable tactile sensor without any bias electrical

power that paves the way to improve human personalized self-powered healthcare monitoring

system.

Keywords— Piezoelectric, Nano-fiber, Energy Harvester, Sensor


31

YS12

A low cost and extremely safe rechargeable aqueous aluminum-metal battery

Sunny Nandi1 and Shyamal K. Das*

Department of Physics Tezpur University, Assam 784028, India

[email protected], +91-8876428180 Abstract — Rechargeable batteries based on largely earth abundant elements are generally regarded as one of the most promising candidates in achieving high energy/power and ultra-durable energy storage device. A recent example is the chloroaluminate electrolyte based Al-ion battery with graphene cathode. However, certain demerits of chloroaluminate electrolytes such as high reactivity to most of the metals, moisture sensitivity and high cost will be impediments for mass-scale production of Al-ion battery. Therefore, utilization of water based electrolyte in rechargeable Al battery is expected to mitigate these challenges. Herein, the working of a rechargeable aqueous aluminum-metal battery is demonstrated for the first time by electrochemically pairing metallic aluminum as anode with graphite as cathode. A discharge voltage of 1.8 V is obtained with an initial discharge capacity of 213 mAhg-1 at a current density of 0.5 Ag-1 over several cycles. The uniqueness of the outlined Al-graphite battery is that it takes the benefit of amazingly minimal effort assets and could be effectively amassed at ambient environment. Keywords — Aluminum-battery, Exfoliated graphite, aqueous electrolyte, energy storage.


32

YS13

Graphene from discharged dry cell battery electrodes Suresh Bandi

Department of Metallurgical & Materials Engineering, Visvesvaraya National Institute of

Technology, Nagpur – 440010.

E-Mail: [email protected], Mobile: +91-9985784488.

Abstract: Graphene is a 2d one atom thick layered material composed of sp2 hybridized carbon

atoms. It has evolved as a promising material for various applications viz., catalysis, energy,

environmental, automobile, electrical, biological, etc. owing to its tremendous thermal & electrical

conductivities, increased electron mobility, excellent young’s modulus, etc. The demand for

graphene has increased drastically from the date of its discovery. Hence, extracting graphene from

discharged dry cell battery electrodes could be a sustainable approach that serves two purposes at

a time i.e. waste management and environmental safety.

To put forward, the waste dry cell battery electrodes were collected and cleaned. The

electrochemical exfoliation (ECE) in acidic media was adopted for the synthesis. Two thoroughly

cleaned graphite electrodes were employed in the process. The obtained product at the end of the

process was graphene oxide (GO) with an 88% yield. Furthermore, the GO was subjected to a

thermal reduction treatment in an argon atmosphere at suitable temperature and time to achieve

reduced graphene oxide (rGO) i.e. graphene. The materials were thoroughly characterized at each

stage to understand the process and quality of graphene produced [1].

Keywords: Graphene oxide; rGO; Waste management; Battery electrodes

References:

[1] S. Bandi, S. Ravuri, D.R. Peshwe, A.K. Srivastav, J. Hazard. Mater. 366 (2019) 358–369.


33

YS14

High Temperature Magnetocaloric Effect in Devitrified Fe/Co-based Glassy

Monolayer and Bilayer Ribbons

Sushmita Dey1, 2, 3, R.K Roy1, A. Basu Mallick2, A.Mitra1, A.K.Panda1 1CSIR-National Metallurgical Laboratory, Jamshedpur 831007, India,

2Indian Institute of Engineering Science and Technology, Shibpur, West Bengal, India 3Department of Physics, National Institute of Technology, Raipur, Chhattisgarh, 492010, India

Email- [email protected]

Abstract — Rapidly quenched Co and Fe based monolayer and their bilayer prepared through double nozzle technique have been characterized to investigate its microstructural and magnetic properties and their possibility as high temperature magnetocaloric material. The Co and Fe-based monolayer ribbons displayed Curie temperatures (TC) of 463 K and 700 K respectively. Magnetic entropy change ∆SM of the bilayer was measured at a low magnetizing field of 1 T in the temperature spans covering separately for TC of Co and Fe-based ribbons corresponding to separate entropy at low and high temperature regime. The ∆SM value at TC of Fe based ribbon displayed values in the span of 1.13 to 1.71 J.Kg-1K-1 in their monolayer and bilayer state. On incipient nanocrystallisation at 773 K, the ∆SM and refrigerant capacity (RC) around TC of cobalt based bilayer ribbon, revealed comparable values as in their as-quenched state. However, nanocrystallisation elevated the ∆SM of bilayer across TC of the Fe-based regime to a high value close to 4.6 J.Kg-1K-1 with a fairly elevated RC of 96 J.Kg-1. The enhanced ∆SM associated with the formation of Fe-based nanocrystallites is evidenced through transmission electron microscopy. The inter-diffusion of ferromagnetic elements Fe, Co is also supposed to elevate the ∆SM as well as the RC of the glassy system in the bilayer ribbons. Keywords—Melt Spinning; amorphous; nanocrytsallization, Bilayer ribbon; magnetocaloric


34

YS15

Sr2SnO4 Ruddlesden Popper Oxide: A multifunctional material

Upendra Kumara*, Sakthipandi Kb

a Department of Physics, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India. b Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560

012, Karnataka, India

Email: a*[email protected] ; [email protected] Mob: +91-8765476361 Abstract — Ruddlesden Popper (RP) oxide materials were firstly studied by S. N. Ruddlesden and P Popper and expressed by general chemical formula An+1BnO3n+1. Among studied RP oxides, the alkaline earth based stannates (M2SnO4, M: Ca, Sr, Ba) drawing the more attention of researchers towards phosphor and display devices application. The advantage of these phases over the well-discussed perovskites is that it exhibited in both oxygen-deficient and oxygen efficient. The properties of these RP phases were strongly dependent on the concentration Sn2+/Sn4+ and oxygen stoichiometry, playing a crucial role to enhanced the electrical, optical, and magnetic properties. Based on different kinds of doping such as Ba2+ at Sr2+, Nd3+ at Sr2+, and Eu3+ at Sn4+; sites of Sr2SnO4, the Sr2SnO4 has been projected as a potential candidate for thermally stable capacitor, dilute magnetic semiconductor, display device applications. Study of the properties of these materials is not only for the materials development but also to understand the basic solid-state physics and materials science. All the properties of doped RP oxides were described in terms of charge compensation mechanism. Therefore, we could say the Sr2SnO4 as a functional material and with a dilute amount doping the properties will be drastically modified for dielectric capacitor, dilute magnetic semiconductor, and optical device applications. Keywords: Ruddlesden Popper Oxide; Dielectric constant; Spintronics; Photoluminescence Spectroscopy. References:

1. Kumar, Upendra, Dharmendra Yadav, and Shail Upadhyay. "Investigation of structural, optical and magnetic properties of Nd doped Sr2SnO4 Ruddlesden Popper oxide." J Am Ceram Soc. 2020; 103:5743–5757.

2. Kumar, Upendra, and Shail Upadhyay. "Structural, microstructure, optical, and dielectric properties of Sr1.99M0.01SnO4 (M: La, Nd, Eu) Ruddlesden–Popper oxide." Journal of Materials Science: Materials in Electronics (2020): 31:5721–5730.

3. Kumar, Upendra, and Shail Upadhyay. "Studies on dielectric and electrical properties of Ruddlesden-Popper oxide Sr2SnO4." Materials Letters 227 (2018): 100-103.

4. Kumar, Upendra, and Shail Upadhyay. "Investigation of structural, optical, and electrical properties of Sr2SnO4, Sr1.99Eu0.01SnO4, and Sr2Sn0.99Eu0.01O4 Ruddlesden Popper oxide." Materials Research Express 6, no. 5 (2019): 055805.

5. Kumar, Upendra, Kumar Ankur, Dharmendra Yadav, and Shail Upadhyay. "Synthesis and characterization of Ruddlesden-Popper system (Ba1−xSrx)2SnO4." Materials Characterization 162 (2020): 110198.


35

YS16

Zn Doping Induced Enhancement of Multifunctional Properties in NiO Nanoparticles

U.K. Panigrahi1, P.K. Das1, R. Biswal2, V. Sathe3, P.D. Babu4, A. Mitra5 and P. Mallick1 1Department of Physics, North Orissa University, Baripada 757003, India

2Department of Applied Physics and Ballistics, Fakir Mohan University, Balasore 756019, India 3UGC-DAE Consortium for Scientific Research, Indore 452017, India

4UGC-DAE Consortium for Scientific Research, Mumbai Centre, R-5 Shed, BARC, Mumbai 400085, India 5Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India

e-mail: [email protected]

Abstract Ni1-xZnxO nanoparticles were synthesized by wet-chemical route. XRD characterization of

these samples indicated that Zn doping in NiO induced neither structural phase transformation nor

any secondary phase. Rietveld refinement of XRD data indicated that the lattice parameter of NiO

increases with increasing of Zn doping concentration. TEM analysis confirms the reduction of

agglomeration and shape transformation from irregular to almost spherical shape up on Zn doping

in NiO. Raman study combined with photoluminescence study suggested that these materials

could be useful for optical applications. Magnetic characterization of Ni1-xZnxO samples indicates

that all samples show weak ferromagnetism at room temperature with the persistence of

unsaturation behaviour even up to very high magnetic field. Our study indicated that our

synthesized samples could be useful for UV emission device, magnetic random access memory

and data storage applications.

Key Word: Doping, NiO, Core-shell structure, Shape transformation, Ferromagnetism, Optical

property.


36

YS17

Biocompatible collagen-nanofibrils: An approach for sustainable energy harvesting and battery-free humidity sensor applications

Venkateswaran Vivekananthan, Nagamalleswara Rao Alluri, Yuvasree Purusothaman, Arunkumar Chandrasekhar, Sophia Selvarajan and Sang-Jae Kim*

Nanomaterials & System Lab, Department of Mechatronics Engineering, Jeju National University, South Korea.

Email; [email protected], whatsapp no. +918012945004 Abstract In contrast with the conventional ceramic/oxide humidity sensors (HS), a self-powered piezoelectric biopolymer (SP-PB)-HS with reasonable sensitivity, reliability, non-toxic, and eco-friendly nature is highly desirable. A piezoelectric nanogenerator (PNG) driven biopolymer based HS provides a pathway towards a sustainable and greener environment in the field of smart sensors. For that, a piezoelectric collagen-nanofibrils (PCNF) biopolymer coated on to a cotton fabric has dual functionality (energy harvesting and sensor). Collagen PNG (CPNG) generates a maximum of 45 V/250 nA upon 5 N and can also work as a sensor to measure various percentages of relative humidity (% RH). HS shows a linear response with a good sensitivity (0.1287 A/ % RH) in the range of 50-90 % RH. These results open a field of eco-friendly multifunctional nanomaterials towards the development of non-invasive, implantable smart bio-medical systems. Keywords: Humidity sensor, Self-powered, Piezoelectric biopolymer, Collagen-nanofibrils, piezoelectric nanogenerator


37

YS18

Structure and properties of Nd1-xAxMn0.5Fe0.5O3-δ (A=Ca, Sr, Ba; x=0, 0.25) A. Hossaina*, V.A. Cherepanova and K. Sakthipandib

aDepartment of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg, Russia, E-mail:

[email protected], +79122885044 (WhatsApp) aDepartment of Physical and Inorganic Chemistry, Institute of Natural Sciences and

Mathematics, Ural Federal University, Yekaterinburg, Russia, E-mail: [email protected] bDepartment of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India,

E-mail: [email protected] Abstract — Mixed-valence manganites were widely studied due to their interesting electronic and magnetic properties [1]. These materials can be used in electronic switches, sensors, and memory devices for their colossal magnetoresistance properties, as cathode in Solid Oxide Fuel Cells, and as catalysts in the visible-light-driven photocatalysis [1]. The effect of hole doping on structural, optical, magnetic, and electrical properties of NdMn0.5Fe0·5O3-δ has been investigated in air. The citrate-nitrate combustion technique was used to synthesize the oxides. Rietveld refinement of XRD patterns of the samples demonstrate that NdMn0.5Fe0.5O3−δ and Nd0.75Ba0.25Mn0.5Fe0.5O3−δ are orthorhombic while Nd0.75Ca0.25Mn0.5Fe0.5O3−δ and Nd0.75Sr0.25Mn0.5Fe0.5O3−δ are monoclinic. The unit cell volume is decreased with the decreasing the size of A-dopant in Nd1-xAxMn0.5Fe0·5O3-

δ. The absorption decreases for the A-site doped samples confirmed form UV–vis absorption spectra. The estimated two optical band-gap energy (Eg) values corresponding to the charge transfer involving iron cations (higher Eg) and the charge transfer via manganese cations (lower Eg) respectively. The significant irreversibility between the zero-field cooled and field-cooled data was observed below Néel temperature (TN) while partial substitution of Nd by alkaline earth metals decreases the TN. The field-dependent magnetization at 3 K indicates antiferromagnetic ordering with a spin canting. The temperature dependent resistivity (T = Tp < TN) indicate the transformation of metallic to semiconductor conduction with increasing temperature while Tp temperature significantly decreases with doping. The introduction of alkaline earth metals in Nd1-

xAxMn0.5Fe0·5O3-δ noticeably reduces the resistivity in the semiconducting region. The small polaron hopping mechanism of conduction is suggested at T > TN. Within the range of Tp < T < TN, the resistivity data are interpreted by the variable range hopping mechanism. A significant value of magnetoresistance ( 44%) was observed only for Nd0.75Sr0·25Mn0·5Fe0·5O3-δ at 120 K. Keywords — Manganite, Optical, Magnetic, Resistivity References

[1]. A. Hossain, A.R. Gilev, P. Yanda, V.A. Cherepanov, A.S. Volegov, K. Sakthipandi, A. Sundaresan, Optical, magnetic and magneto-transport properties of Nd1-xAxMn0.5Fe0.5O3-δ (A=Ca, Sr, Ba; x=0, 0.25), Journal of Alloys and Compounds, 847, 2020, 156297


38

PN-22

Post Annealing Effects of Perovskite (CH3NH3PbI3) Thin films For Solar Cell Applications

Ipsita Mohantya, S. Mangala,*, S. Janaa and Udai P. Singhb

aSchool of Applied Sciences, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India, [email protected], [email protected],

[email protected]

bSchool of Electronics Engineering, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, India, [email protected]

Abstract — In this work, methyl ammonium lead iodide (CH3NH3PbI3) thin films were deposited using spin-coating method. The thin films were investigated as a function of different thermal annealing temperatures with time being constant and as a function of time with constant temperature. The compositional and structural analyses have been studied by EDXRF and XRD respectively. The optical and chemical properties were also studied using UV-Vis spectrophotometer and FTIR spectroscopy. The characterization result shows the change in its properties with increase in temperature and time. From the XRD data, it can be observed that with an increase in temperature, the CH3NH3PbI3 decomposes to PbI2, and with an increase in annealing time, the CH3NH3PbI3 peaks show degradation. A basic comparison has been made in order to study the effect of annealing on the CH3NH3PbI3 thin films.

Keywords— CH3NH3PbI3, Perovskite solar cells, Annealing, Thin films.


39

PN-28

Nano-crystalline Ag6Mo10O33 Thin Film – A Potential Petroleum Gas Sensor

Sunasira Misra

P.G. Dept. of Chemistry, Khallikote Autonomous College, Berhampur-760001, Odisha, India (email: [email protected] )

Abstract —A soft-chemical method has been developed for the synthesis of nanocrystalline thin film of silver decamolybdate over polycrystalline alumina substrate by spin coating. Gas sensing characteristics of Ag6Mo10O33 thin film was investigated for different gas analytes. The compound Ag6Mo10O33 was found to sense selectively ammonia at 503 K. Above 503 K, it has significant cross sensitivity to petroleum gas (PG). Spin coated thin film of this compound was found to exhibit high resistance. On employing interdigitated platinum electrode, film resistance came down to a measurable value and its sensing characteristics towards trace (ppm) level of different toxic and flammable gas analytes at various temperatures are reported in this paper.

KEYWORDS: Soft-chemical method, Ag6Mo10O33 nano crystals, Spin coated thin film, Interdigitated platinum electrode, Gas sensor


40

PN-78

The Usage of Biochar as Potential Filler in NFRPC

V.Arumugaprabua, and P.Sivaranjanab* aAssociate Professor, Department of Mechanical Engineering, Kalasalingam Academy of Research

and Education, Krishnankoil, India, [email protected] bAssistant Professor, Department of Chemistry, Kalasalingam Academy of Research and

Education, Krishnankoil, India, [email protected]

Abstract — The addition of filler material proved to improve the stiffness of the natural fiber reinforced polymer composite materials (NFRPC). Most filler are used as primary or secondary reinforcement material in making polymer composites. Most important quality the filler must possess is high strength so as to enhance the mechanical, thermal, electrical and tribological behaviour of the polymer composites. Most commonly used fillers include ceramics and glasses such as small mineral particles, metal particles such as aluminium and amorphous materials, including polymers and carbon black. Fillers are used to increase the modulus of the matrix and to decrease the ductility of the matrix. Fillers are also used to reduce the cost of the composites. One such type of innovative filler to be used as potential ones in NFRPC making is the Biochar. Biochar is a charcoal used normally as a soil amendment in agriculture because of its firm and rich carbon content. Because of its rich carbon content, it will be a decent contender as alternate for expensive and higher environment influencing carbon fillers. By using biochar as a filler material, wastes can be renewed into a value-added merchandise of biochar whose application in polymeric composites makes them robust, good fire-resistant, cheaper, and can instantaneously endorse sustainability. Therefore, biochar being inexpensive, renewable, and having attractive physical properties rightly fits into the pattern for new industrial, economic, and social development where it can be used to both mitigate wastes and produce novel and better composite products. The advantages offered by this biochar are reusage of wastes, high load bearing capacity, increase in stiffness, resilience, brittle nature to ductile. This biochar has the potential to be used along with various fibers to produce the composites with excellent performance.

Keywords — Biochar, Natural fiber, Polymer matrix


41

PN-121

Unprecedented designing of a new metal-organic polymer material with excellent photodegradation property toward hazardous dyes in aqueous phase

M. Shahnawaz Khan,a Mohd Khalid,a*

aDepartment of Chemistry, Aligarh Muslim University, Aligarh 202002 Email: [email protected]

Abstract —Water poisoning due to organic pollutants is befitting a devastating interest right through the world, and how to get freed of these organic pollutants from the water remains a problematic matter for environmental chemists. Keeping this in mind, one-dimensional cobalt(II)-based coordination polymer (Co-CP) was synthesized applying solvothermal condition. On the basis of single-crystal X-ray diffraction and elemental analysis the exact structure of synthesized polymer was elucidated. Additionally, Co-CP has been characterized by magnetic study, FTIR, UV- Visible, PXRD, and TGA analysis. FTIR spectra ascertain the bonding modes of primary and auxiliary ligand. The SEM study reveals the outer morphology of the Co-CP. The Co-CP was employed for its material importance through its magnetic study and photodegradation property. Magnetic information about the Co-CP unveils the existence of the strong antiferromagnetic nature coupled with anisotropy in the system (C = 2.71 cm3 K mol-1 and θ = -6.43 K). Furthermore, the Co-CP itself has been effectively used as a photocatalyst for the degradation of organic pollutants like Methylene blue (MB) and Rhodamine-B (Rh-B) in the waste water. The Co-CP manifested unusual photocatalytic activity toward the decolorization of the organic dyes. Based on scavenging investigation, a mechanism for the excellent photocatalytic activity has been suggested. Moreover, Co-CP has the benefits of excellent catalytic activity and recyclability towards organic pollutants.

References

[1] Khan, M. S., Khalid, M., Ahmad, M. S., Shahid, M., & Ahmad, M. (2019). Three-in-one is really better: exploring the sensing and adsorption properties in a newly designed metal–organic system incorporating a copper (II) ion. Dalton Transactions, 48(34), 12918-12932.

[2] Khan, M. S., Khalid, M., Ahmad, M. S., Shahid, M., & Ahmad, M. (2020). Catalytic activity of Mn (III) and Co (III) complexes: evaluation of catechol oxidase enzymatic and photodegradation properties. Research on Chemical Intermediates, 1-22.


42

PN-125

Towards a low cost rechargeable aqueous aluminum- metal battery

Sunny Nandi1 and Shyamal K. Das*

Department of Physics

Tezpur University, Assam 784028, India

[email protected], [email protected]

Abstract — Rechargeable batteries based on largely earth abundant elements are generally regarded as one of the most promising candidates in achieving high energy/power and ultra- durable energy storage device. A recent example is the chloroaluminate electrolyte based Al- ion battery with graphene cathode. However, certain demerits of chloroaluminate electrolytes such as high reactivity to most of the metals, moisture sensitivity and high cost will be impediments for mass-scale production of Al-ion battery. Therefore, utilization of water based electrolyte in rechargeable Al battery is expected to mitigate these challenges. Herein, the working of a rechargeable aqueous aluminum-metal battery is demonstrated for the first time by electrochemically pairing metallic aluminum as anode with graphite as cathode. A discharge

voltage of 1.8 V is obtained with an initial discharge capacity of 213 mAhg-1 at a current

density of 0.5 Ag-1 over several cycles. The uniqueness of the outlined Al-graphite battery is that it takes the benefit of amazingly minimal effort assets and could be effectively amassed at ambient environment.

Keywords — Aluminum-battery, Exfoliated graphite, aqueous electrolyte, energy storage.


43

PN-154

A real-time colorimetric chemosensor for detection nitroexplosive and metal ions in aqueous media and human hemoglobin

S onam Shakya, Ishaat M. Khan*

Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India [email protected]

Abstract —A cost-effective and easy to prepare colorimetric aqueous medium dual charge-transfer complex as a chemosensor was synthesized. This chemosensor shows a highly selective fluorescence quenching response towards 1,3-dinitrobenzene over other nitro explosives and Fe2+ ion over other metal ions. A noticeable color differen can be seen between Fe2+ and Fe3+ by the naked eye. This discriminative detection of two states Fe ion was also observed in human deoxyhemoglobin (HHb) and oxyhemoglobin (HbO2). The synthesized chemosensor was characterized by SC-X-ray study, FTIR and 1H NMR.. The N+–H---O- bonding among reactants was found to have an important role in Fe2+ interaction with S1, proving this approach of CTC synthesis as a chemosensor to be novel.

Keywords: Charge transfer; Chemosensor; SC-XRD; Human hemoglobin; Fluorescence; TD/DFT; Docking;1H-NMR.


44

PN-198

Designing of high security locking mechanism using shape memory alloy

R. Manika, A. Beherab*

aDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela,

India, [email protected]

bDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela, India, [email protected]

Abstract - It uses the fundamental mechanism of actuator technology being supported by shape memory alloy. The creation of high security locking involves the fabrication of a high strength actuator which can withstand long cycles of heating and cooling. Testing of efficiency is done by using the one way and two shape memory alloy property which involves single as well as multiple actuators. It also compares various modes of actuation using electricity or by thermal heating. The comparison of the entire module with different types of design is conveyed with a best fit model. The main advantage of this technology is to create a step forward in the security system providing an advanced mode of protection in various sophisticated industries. In sort the entire comparison is done in three parameters, firstly various types of shape memory alloys are taken into account and one with the lowest hysteresis cycle is being considered fit for the application. Secondly, the deduction of optimum temperature to prevent overheating and abnormal cooling. The temperature plays a crucial role in the entire actuation and further efficiency is relatable to the correct temperature determination. Lastly, the modeling of the entire setup is done in CAD software and the best fit model is determined depending on the condition and mode of operation. This comparison accurately points out challenges and future requirement of materials which can be developed to further increase efficiency.

Keywords — actuator, overheating, shape memory alloy, hysteresis


45

PN-200

Designing core shell MoO3@NiCo2S4 hybrid composite for advance charge storage application

Dillip Kumar Mohapatra

Department of physics,KIIT University [email protected]

Abstract

Advanced energy storage systems are in urgent demand to satisfy the requirements of fast- growing electrical vehicle applications. The challenge in this realm is to design cost effective catalyst with enhanced functionalities for advance energy storage and conversion. We have designed MoO3 layers on NiCo2S4 surface by hydrothermal process. MoO3 forms flexible protective layers on conductive core material (NiCo2S4). The final material MoO3@NiCo2S4 is obtained in the form

of nanospheres which show high specific capacitance of 1600 F g−1 at 2 A g−1 and a good capacitance retention of 91% after 3000 cycles. This is a novel strategy to design materials for supercapacitor electrodes. The charge storage activity of MoO3@NiCo2S4 is attributed to its high surface area and electrical conductivity, which provides a broad ion diffusion pathway, low charge-transfer resistance, and robust structure at high current density for long-time cycling.

Keywords: Supercapacitor, NiCo2S4, nanospheres, layer structure

References:

1 J. Phys. Chem. C 115 (2011) 15646

2 ACS Appl. Mater. Interfaces 3 (2011) 2063

3 Electrochim Acta, 268 (2018) 139.


46

PN-273

Harvesting Energy through Electrochemical Water Splitting by Employing a Ternary Hybrid of Patronite- Carbon Nanotubes-Reduced

Graphene Oxide

Satyajit Rathaa, Aneeya K. Samantarab,c, Jiban K. Dasb,c, Naresh K. Jenad,

Brahmananda Chakrabortye and J. N. Beherab,c*

aSchool of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Jatni, Khordha,

Odisha – 752050, India

bSchool of Chemical Sciences, National Institute of Science Education and Research, Argul, Jatni, Khordha – 752050, Odisha, India.

cHomi Bhabha National Institute, Mumbai, India.

dCondensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala Sweden.

eHigh Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India

Abstract —This work reports the hybridization of patronite (VS4) sheets with reduced graphene oxide and functionalized carbon nanotubes (RGO/FCNT/VS4) through a simple hydrothermal approach. The synergistic effect imparted by the individual components, i.e., RGO, FCNT, and VS4, significantly improves the efficiency of the ternary (RGO/FCNT/VS4) composite towards the oxygen evolution reaction. The ternary composite needs only 330 mV of overpotential to

deliver the state-of-art current density of 10 mA/cm2 and yields an appreciable lower Tafel slope. Furthermore, the higher electrochemical accessible surface area and the presence of large number of active sites make the composite catalytically more active. Besides, the ternary composite exhibits excellent stability and high faradic efficiency (~96.38%) at an overpotential of 330 mV. These experimental findings are further corroborated by the state-of-the-art density functional theory by presenting adsorption configurations, the density of states, and the overpotential of these hybrid structures. Interestingly, the theoretical overpotential follows the qualitative trend of RGO/FCNT/VS4 < FCNT/VS4 < RGO/VS4, which is in good agreement with our experimental observations.

Keywords — water splitting, patronite, graphene, carbon nanotube

abstract book 2020 -inugration-28-8-2020...2020/08/28 · cell applications ipsita mohanty, s....

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