2017

18th InternationalConference of Young Specialists on Micro/Nanotechnologies and Electron Devices

Proceedings

Erlagol, Altai Republic29 June - 3 July, 2017

SponsorsNovosibirsk State Technical UniversityIEEE Russia Siberia Section

Under support ofRussian Foundation for Basic Research (RFBR)Institute of Semiconductor Physics SB RASBiysk Technological Institute

978-1-5090-6687-2

brought to you by COREView metadata, citation and similar papers at core.ac.uk

provided by Tomsk State University Repository

The conference was organized under financial support of Russian Foundation for Basic Research (RFBR), project No. 17-37-10154-mol_g

18th INTERNATIONAL CONFERENCE OF YOUNG SPECIALISTS ON MICRO/NANOTECHNOLOGIES

AND ELECTRON DEVICES

EDM 2017

ORGANIZING COMMITTEEChairman:Sergey A. Kharitonov, Dr. Sc., Professor, Head of the Power Electronics Institute, IEEE Senior Member, NSTU, Novosibirsk, RussiaCo-chairmen:Sergey V. Brovanov, Dr. Sc., Associate Prof., Head of the Department of Computer Engineering, Vice Rector for Academic Affairs, NSTU, Novosibirsk, RussiaVladimir A. Khrustalev, Dr. Sc., Professor, NSTU, Novosibirsk, RussiaSecretaries:Tatiana E. Shults, postgraduate student of the Department of Electronics and Electrical Engineering, NSTU, Novosibirsk, RussiaAndrey V. Sidorov, postgraduate student of the Department of Electronics and Electrical Engineering, NSTU, Novosibirsk, Russia

PROGRAMM COMMITTEEIgor G. Neizvestnyi, Dr. Sc., Corresponding member of RAS, Counselor of the Institute of Semiconductor Physics SB RAS, Novosibirsk, RussiaProf. Helmut Weiss, Dr.Sc., Head of Institute of Electrical Engineering, Montanuniversität, Leoben, AustriaSvetlana V. Vorobiova, Cand. Sc., Head of the Department, SibSUTI, Novosibirsk, RussiaProf. Vladimir А. Gaisler, Dr.Sc., Head of the Department, NSTU, Novosibirsk, RussiaProf. Victor A. Gridchin, Dr. Sc., IEEE Member, NSTU, Novosibirsk, RussiaProf. Gennadiy S. Evtushenko, Dr.Sc., Prof. of the Department of Industrial and Medical Electronics, TPU, Tomsk, RussiaProf. Gennady S. Zinoviev, Dr. Sc., IEEE Member, NSTU, Novosibirsk, RussiaProf. Vladimir K. Makukha, Dr. Sc., Head of the Department, IEEE Member, NSTU, Novosibirsk, Russia, Novosibirsk, RussiaProf. Vladislav Yu. Vasiliev, Dr.Sc., Prof. of the Department of Semiconductors and Microelectronics, NSTU, Novosibirsk, RussiaProf. Alexey S. Rodionov, Chair of IEEE Russia Siberian Section, Prof. SIBSUTI, NSTU, Novosibirsk, RussiaProf. Alexander G.Garganeev, Dr.Sc., Head of the Department of Electromechanical Plants and Materials, TPU, Tomsk, RussiaProf. Evgeniy V. Sypin, Сand. Sc., IEEE Member, Byisk AltGTU, Byisk, RussiaProf. Vladimir N. Khmelev, Dr. Sc., IEEE Member, Byisk AltGTU, Byisk, RussiaDmitri Vinnikov, Dr.Sc., Head of Power Electronics Group, TUT, Tallinn, EstoniaProf. Jürgen Petzoldt, Dr.-Ing. Habil, Technische Universität Ilmenau, Ilmenau, GermanyKasymbek A. Ozhikenov, Cand.Sc., Associate Prof., Head of the Department of Robotics and Engineering Tools of Automation, Kazakh National Research Technical University after K.I.Satpayev, Almaty, KazakhstanProf. Sergey P. Khalyutin, Dr.Sc., CEO NaukaSoft LLC, Moscow, Russia

PUBLISHING COMMITTEEPublication chair: Alexandra I. Khristolyubova, senior lecturer, NSTU, Novosibirsk, Russia

18th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices EDM 2017: Conference Proceedings, 2017 ISBN 978-1-5090-6687-2

Proceedings of 18th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices EDM 2017. The Conference covers various areas of modern techniques of modeling, development and investigation of micro/nanotechnologies, new and advanced electron devices.Copyright and Reprint Permission: Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limit of U.S. copyright law for private use of patrons those articles in this volume that carry a code at the bottom of the first page, provided the per-copy fee indicated in the code is paid through Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923. For reprint or republication permission, email to IEEE Copyrights Manager at pubs-permissions@ieee.org. All rights reserved. Copyright © by IEEE. 2017

ISBN 978-1-5090-6687-2CFP17500-USB

© Novosibirsk State Technical University, 2017© IEEE, 2017

ORGANIZERNovosibirsk State Technical University

SPONSORSNovosibirsk State Technical University

IEEE Russia Siberia Section

UNDER SUPPORT OFInstitute of Semiconductor Physics SB RAS

Biysk Technological Institute

Table of ContentsSection I. Semiconductor Physics and Technology. Photovoltaics

Section Chair: Viktor A. Gridchin

1. Effect of Ultrasonic Treatment on the X-band Microwave Absorption of Multiwalled Carbon Nanocomposite Olga A. Dotsenko, Anastasia O. Kachusova 3

2. Investigation of the Cyclotron Resonance in a Semiconductor Film Having Cubic Structure Aleksey G. Moiseev, Yakov S. Greenberg, Nurgali Z. Altynbekov, Yan Z. Ososkov 7

3.Determination’s Principles of Critical Concentration of Mobile Charges in the Oxide and Geometrical Configuration of Heterogeneous Surface Transfer Transistor Gate Matrix of Photodetector Anna M. Nogovitsyna, Gennady V. Perov

12

4.Features of Photoconductivity of PbSnTe:In Films Under the Variable Illumination Aleksey N. Akimov, Denis V. Ishchenko, Alexander E. Klimov, Nikolai S. Paschin, Artem N. Papantonopulo, Valentina N. Sherstyakova

18

5. Influence of AIIIBV Substrate Morphology on Congruent Temperature under Langmuir Evaporation Conditions Anna A. Spirina, Alla G. Nastovjak, Nataliya L. Shwartz 22

6. The Conductivity Switch Effect in PbSnTe:In Thin Films Aleksey N. Akimov, Vladimir S. Epov, Alexander E. Klimov 27

7.Planar Barrier Structures Based on Thin Films of Pb1-xSnxTe:In for the Far IR Photodetector: Preparation and Properties Aleksey N. Akimov, Denis V. Ishchenko, Alexander E. Klimov, Nikolai S. Paschin, Andrey S. Tarasov, Valentina N. Sherstyakova

30

8. Numerical Simulation of the Complementary Bipolar Pair of Transistors in the Hydrodynamic Approximation Mikhail O. Hrapov, Victor A. Gridchin, Sergey V. Kalinin 34

9. Analytical Model of Photoelectric Pressure Sensor Artyom S. Chernov, Viсtor A. Gridchin 37

Section II. Radio- and Microwave Technology. Computer Science and Telecommunications

Section Chair: Svetlana V. Vorobiova

1. Architecture of Multithreaded Network Scanner Anton V. Arzhakov, Dmitry S. Silnov 43

2. Experimental Confirmation of the Modal Filtration in Four- and Five-conductor Microstrip Lines Anton O. Belousov, Alexander M. Zabolotsky, Timur T. Gazizov 46

3.Research of a Possibility of Resonator Diagnostics of Thin Filamentary Objects in a Low Part of the Terahertz Frequency Band Vitaly V. Bessonov, Kirill V. Dorozhkin, Igor О. Dorofeev

50

4. Quasistatic and Electromagnetic Simulation of Interconnects of Printed Circuit Boards with Modal Reservation Pavel E. Orlov, Evgeniy N. Buichkin 54

5. Some Aspects of Layout Design of Quadrature Mixers Anatoly V. Kosykh, Sergey А. Zavyalov, Ruslan А. Wolf, Rodion R. Fakhrutdinov, Кonstantin V. Murasov 59

6. Software Implementation of the Method of Synthesis of Broadband Matching Devices with Linear Phase Dmitry I. Volkhin, Gennady N. Devyatkov 64

7.Influence of Ultrashort Pulse Duration on Its Peak Values Localization in PCB of Spacecraft Autonomous Navigation System Ruslan R. Gazizov, Alexander M. Zabolotsky, Timur T. Gazizov, Anton O. Belousov

69

iii

8. Study of the Intentional Influence Ultrashort Electromagnetic Pulses on Electronic Equipment Aircraft Rustam R. Gaynutdinov, Sergey F. Chermoshentsev 75

9. HTS Microwave Power Limiter Based on Microstrip Quarter-Wave Resonators Ilya V. Govorun, Aleksandr A. Leksikov 80

10. Investigation of Gibbs Fields Modeling Procedures Convergence Anna Yu. Zaitseva, Irina A. Denisenko 83

11. Checking Software Security Using EFSMs Anton D. Ermakov, Svetlana A. Prokopenko, Nina V. Yevtushenko 87

12. Possibilities of a Two-Point Model, Radiating Correlated Signals Aleksey V. Kiselev, Timur I. Sabitov, Maxim A. Stepanov 91

13. The Capacity Estimation of Real Selective Chains under the Influence of PSK-n-signals Ilya M. Lerner, German I. Il’in, Sergey M. Chernyavskii 94

14. Miniature Branch-Line Coupler Structure Analysis Denis A. Letavin 99

15. Study of the Compact Structure of Quadrature Phase Inverter Denis A. Letavin 102

16. Compact Bandpass Filter with Microstrip Resonators Denis A. Letavin 105

17. High-Pass Filters with Round Spiral Resonators and Interdigitated Capacitors Denis A. Letavin 108

18.Study and Implementation of Authentication Mechanism by RADIUS-server in Switches and Routers Using NETCONF Protocol Aleksandr E. Maslov, Sergei L. Katuntsev, Aleksandr A. Maliavko

111

19. The Algorithm for Calculating Reflecting Signal Power Characteristics Based on Terrain Digital Map Aleksey V. Kiselev, Andrey V. Nikulin, Vadim V. Artyushenko 115

20. Delay Line Protecting against Ultrashort Pulses with Increased Duration Alexander V. Nosov, Roman S. Surovtsev, Timur T. Gazizov 119

21. The Method for Increasing the Accuracy of Time Shift Estimation for OFDM Signals Eugeniy V. Rogozhnikov 123

22.Application of a CPU Streaming Technology to Work of the Computer with Data Coming from the Network on the Example of a Heating Station Dina A. Rybakova, Indira K. Sygynganova, Saule K. Kumargazhanova, Alexsandr E. Baklanov, Olga Y. Shvets

128

23. Two-Point Model Composed of Radiators of Correlated Signals Aleksey V. Kiselev, Timur I. Sabitov, Maxim A. Stepanov 131

24.The Microwave Attenuator Mikhail G. Rubanovich, Vladimir P. Razinkin, Vladimir A. Khrustalev, Alexey A. Stolyarenko, Pavel G. Bogomolov, Yuri V. Vostryakov

134

25. Unstable Object Parameters Estimation with One Input and Two Outputs in Automatic Control System Galina V. Troshina, Alexander A. Voevoda, Kurbonmurod Bobobekov 138

26. Integrated Low Noise Amplifiers for Cryogenic Applications Anton A. Cherepanov, Vladislav Yu. Vasilyev 142

27.Study Electromagnetic Disturbance in the Coupling Path of Aircraft at Interaction Microsecond Electromagnetic Pulses Rustam R. Gaynutdinov, Sergey F. Chermoshentsev

147

28. Using Models of Finite Transition Systems for Checking Web-Service Security Anton V. Kolomeets, Natalia V. Shabaldina, Ekaterina V. Darusenkova, Nina V. Yevtushenko 151

29.

Electrodynamic Characteristics of Periodic Nonlinear Composite Structures Based on Opal Matrices and Carbon Nanostructures with Ferromagnetic Inclusions Dmitry A. Bezuglov, Marina Yu. Zvezdina, Gennady P. Sinyavsky, Larissa V. Cherkesova, George N. Shalamov, Yuliya A. Shokova

155

30.Terahertz Electronics of XXI–st Century оn the Base of Ultraharmonic Resonance Circuits on the Magnetooptical Nanostructures Pavel A. Churilov, Boris A. Akishin, Vitaly M. Porksheyan, Larissa V. Cherckesova, Irina S. Trubchik, George N. Shalamov

163

iv

31.Cross-Platform Software and Hardware Solutions for the Problems of Analysis and Multi-Objective Optimization of the UL Throughput in LTE Networks Ruslan V. Akhpashev, Vera G. Drozdova, Andrey V. Andreev, Gregory G. Patrushev

174

32. An Optimal Algorithm for the Discrimination of Multi-Element Information Signals in non-Gaussian CDMA Channels Vladislav V. Kadushkin, Rashid R. Faizullin, Ilya M. Lerner 177

33. On the Fault Coverage of High-level Test Derivation Methods for Digital Circuits Jorge López, Evgeny Vinarsky, Andrey Laputenko 184

34. Routing Efficiency Evaluation with SDN Solutions Integration in the Data Network Gregory G. Patrushev, Vera G. Drozdova 190

35. Increasing the Attractiveness of False Objects of Attack on the Web-servers Ivan U. Shumakov, Sergei S. Troitskiy, Dmitry S. Silnov 195

36. Film Microwave Loads of a Circle Sector Shape Gleb G. Savenkov, Vladimir P. Razinkin, Mikhail G. Rubanovich 199

37. The Novel Waveguide-Fed Dipole-Like Antenna Dmitry A. Buhtiyarov , Anatoly P. Gorbachev, Vladimir A. Khrustalev 202

38.Digital Potentiometers in the Tasks of Settings Precision Analog RC-filters Taking into Account the Tolerances for Passive Components Darya Yu. Denisenko, Yuriy Iv. Ivanov, Nikolay N. Prokopenko, Nadezhda A. Dmitrienko

205

39. New Method of Spectrum Sharing by Different Communication Systems Ilya N. Kornilov 211

40. Equipment for the Production Magnetic Textured Polymer Material Kirill O. Frolov, Olga А. Dotsenko 214

Section III. Sonic and Ultrasonic Devices: Physics, Electronics, ApplicationSection Chair: Vladimir N. Khmelev

1.Development of Semi-automated Lines for Welding of Polymer Film with Simultaneous Cutting Down with Using of Ultrasound Vladimir N. Khmelev, Alexey N. Slivin, Alexey D. Abramov, Dmitriy V. Genne, Viktor A. Nesterov

221

2.Determination of Optimum Construction of the Ultrasonic Radiator for Cavitation-Acoustic Intensification of the Absorption Processes by Mathematical and Computer Modeling Methods Vladimir N. Khmelev, Roman N. Golykh, Andrey V. Shalunov, Galina A. Bobrova, Ilya S. Kozhevnikov, Sergey S. Zorin

227

3.Theoretical Determination of Treating Modes Providing the Formation of High-Disperse Aerosol at Two-Stage Ultrasonic Atomization Vladimir N. Khmelev, Andrey V. Shalunov, Roman N. Golykh, Roman S. Dorovskikh, Viktor A. Nesterov

233

4. The Choice of Method of Construction and the Hardware Core of the Active Noise Reduction System for Room Ivan S. Zorin, Sergey A. Terentiev, Eugene V. Sypin 238

5. Pre-processing Voice Signals for Voice Recognition Systems Gulmira K. Berdibaeva, Oleg N. Bodin, Valery V. Kozlov, Dmitry I. Nefed’ev, Kasymbek A. Ozhikenov, Yaroslav A. Pizhonkov 242

6. Stand For Controlling of Quality of Weld Producing at Ultrasonic Welding of Thermoplastic Materials Vladimir N. Khmelev, Alexey N. Slivin, Alexey D. Abramov 246

7. Efficiency Increase of the Ultrasonic Emitter Designed For Dust Coagulation in Ash Collecting Units Vladimir N. Khmelev, Roman V. Barsukov, Sergey N. Tsyganok, Victor A. Nesterov, Dmitriy V. Genne, Evgeniy V. Ilchenko 250

8.Research of Process of Extraction of Biologically Active Substances (BAS) from Plant Raw Materials in the Conditions of Ultrasonic Extraction Elena V. Averyanova, Vladimir N. Khmelev, Sergey N. Tsyganok, Vladislav A. Shakura

255

9.Study of the Influence of the Anisotropy of the Mechanical Properties of the Material On the Distribution of Ultrasonic Vibrations Disk Radiators Vladimir V. Khmelev, Andrey V. Shalunov, Viktor A. Nesterov, Roman S. Dorovskikh, Roman N. Golykh, Galina A. Bobrova

260

10. Acoustic Structural Monitoring of Pipelines Valery A. Zibrov, Dzhamilya A. Maltseva 264

v

11.Determination of Requirements and Development of Experimental Setup for Studying of Ultrasonic Absorption Intensification Vladimir N. Khmelev, Roman N. Golykh, Viktor A. Nesterov, Dmitry V. Genne, Maxim V. Khmelev

268

12. Research of Ultrasonic Dimensional Processing of Cermet Vladimir N. Khmelev, Sergey N. Tsyganok, Aleksey N. Slivin, Vladislav A. Shakura, Sergey S. Zorin 275

13. Multi-spot Ultrasonic Welding of the Articles Made of Thermoplastic Materials Vladimir N. Khmelev, Alexey N. Slivin, Alexey D. Abramov 279

14.Ultrasonic Drying of Textile Materials Mariya K. Kosheleva, Roman N. Golykh, Tatyana A. Novikova, Roman S. Dorovskikh, Vladimir N. Khmelev, Andrey V. Shalunov

283

15.Study of the Influence of Secondary Modes of Vibrations on the Uniformity of the Distribution of Working Ring Disk of Ultrasonic Disk Radiators Vladimir N. Khmelev, Andrey V. Shalunov, Roman N. Golykh, Roman S. Dorovskikh, Viktor A. Nesterov, Galina A. Bobrova

290

16. Ultrasonic Coagulation to Improve the Efficiency of The Gas Cleaning Systems Vladimir N. Khmelev, Andrey V. Shalunov, Roman S. Dorovskikh, Viktor A. Nesterov, Roman N. Golykh, Ilya S. Kozhevnikov 294

Section IV. Optoelectronic Devices and Systems: Physics, Electronics, ApplicationSection Chair: Evgeniy V. Sypin

1. System of Automated Measurement of Electromagnetic Response of Anisotropic Materials in Quasi-Optical Beams Aleksandr V. Badin, Aleksandr I. Berdyugin, Vasilii Y. Vigovskii, Grigorii E. Dunaevskii 301

2. Active Optical System with a Long-Pulse CuBr Brighntess Amplifier Maxim V. Trigub, Vasiliy V. Vlasov, Gennadiy S. Evtushenko, Valeriya V. Taratushkina 305

3. Study of Illumination Properties of High-Power LEDs in Various Temperature Conditions Yegor A. Grigoryev, Vladimir M. Sayun , Svetlana V. Grigoryeva, Dmitry N. Titov 309

4. Optical Properties of Vanadium and Nitrogen Doped 4H and 6H-SiC Zhiming Huang, Jingguo Huang, Yanqing Gao, Yury M. Andreev, Dmitry M. Ezhov, Valery A. Svetlichnyi 314

5.Analysis of Research Methods of Electro-Physical Properties of Transparent Conducting Coatings Received by Spray Pyrolysis Timur O. Zinchenko, Yekaterina A. Pecherskaya, Vladislav I. Kondrashin, Aleksandr S. Kozlyakov, Yuliya V. Shepeleva

320

6.Determining the Optimal Number of Channels and Their Selection of Wavelengths for High Speed Optical-Electronic Device for Detection of a Fire, on the Basis of Spectral Pyrometry Marina N. Zyryanova, Eugene V. Sypin

324

7. Automatic Parameters Adjustment of LDA Signals Detection System Anton V. Klimov, Vitaly V. Rakhmanov, Igor V. Shchepikhin 328

8. Modeling of Flame Radiation at Burning of Methane-Air Mixtures at Initial Stage of Development Sergey A. Lisakov, Anton I. Sidorenko, Andrey N. Pavlov, Eugene V. Sypin, Gennady V. Leonov 332

9. Transfer Functions of the Focal Plane Arrays Linearization Nikita I. Lysenko, Vladimir G. Polovinkin 338

10. High Frequency CuBr Vapor Brightness Amplifier Ilya S. Musorov, Stanislav N. Torgaev, Gennadiy S. Evtushenko, Anton E. Kulagin, Tatiana G. Evtushenko 341

11. Stimulated Emission on Sodium D-lines using Broadband Optical Pumping Timofey D. Petukhov, Gennadiy S. Evtushenko, Stanislav N. Torgaev, Evgeny N. Tel’minov 345

12.Prospects for the Development of Multicriterion Electro-Optical System for Alarm and Pre-Emergency Situations Control in a Coal Mine Anton I. Sidorenko, Sergey A. Lisakov, Eugene V. Sypin

349

vi

13. Virtual Testing of Electro-optical Systems for Measuring Angles by Using Computer Simulation Model Lev N. Sidorov, Evgenij V. Gritskevich, Polina A. Zvyagintseva 353

14. The Energy Submodel for the Optical-Electronic Device of Two Spectral Ratios Nadezhda Y. Tupikina, Eugene V. Sypin 357

15.Development of Movement Control Algorithm along Predetermined Trajectory for Fire Robot Based on the Quadcopter Vyacheslav A. Shadrin, Sergey A. Lisakov, Andrey N. Pavlov, Eugene V. Sypin

362

16.Optic-Electronic Processing of Ball Elements Images Kristina A. Suvilova, Anastasiya I. Polezhaeva, Mikhail F. Noskov, Vasiliy I. Tatarnikov, Mikhail G. Rubanovich, Vladimir P. Razinkin

368

17.Determination of Control Points Quantity and Their Location in Protected Object for High-Speed Multipoint Electro-Optical System for Fire Detection and Determine its Spatial Coordinates Sergey A. Lisakov, Andrey N. Pavlov, Eugene V. Sypin, Gennady V. Leonov

371

18.Determination of Optimum Spectral Ranges of Flame Radiation Control by Using Compensation Method of Optical Noise Suppression Sergey A. Lisakov, Anton I. Sidorenko, Andrey. N. Pavlov, Gennady V. Leonov, Eugene V. Sypin

378

19. Automation of Calculation and Design of the Optical-Electronic Devices for the Fires Detection Nadezhda Y. Tupikina, Eugene V. Sypin, Anastasija Yu. Arhipova 384

20. Measuring of the Irregular Flow of Milk by the Contactless Optical Flow Sensor Dmitriy A. Gerasimov, Sergey A. Terentiev, Alexander V. Anikeev, Eugene S. Povernov, Eugene V. Sypin 388

Section V. Power Electronics, Mechatronics and AutomationSection Chair: Gennady S. Zinoviev

1.Statistical Methods Application in Signals Spectral Classification for Power Quality Estimation in Power Transmission Lines with Fast Changing Loads Pavel V. Morozov, Yury V. Morozov

393

2. The Microcircuits MH2XA010-02/03 for Signal Processing of Optoelectronic Sensors Oleg V. Dvornikov, Anna V. Bugakova, Nikolay N. Prokopenko, Valentin L. Dziatlau, Ilya V. Pakhomov 396

3. Digital Control System Design for a Cuk Converter Efim A.Aksenov, Valery D.Yurkevich 403

4. Primary AC Power Supply System for Autonomous Objects Maxim V. Balagurov, Dmitry V. Korobkov, Petr A. Bachurin, Abilmansur R. Mansurov, Valery Y. Surov, Maksim A. Zharkov 409

5. A Family of Nine-Switch Converters Vladimir Popov, Evgeny Baranov, Sergey A. Klassen, Tatyana Sekushenko 413

6. Neural Network Model of the Solar Battery Irina A. Belova, Miroslav V. Martinovich, Vladimir A. Skolota 417

7. Evaluation of Efficiency of the Electronic Transformer’s Circuits with an Intermediate DC Link Dmitriy V. Anyfriev, George S. Leus, Andrey V. Sidorov, Alexander G. Volkov, Gennady S. Zinoviev, Maksim A. Zharkov 422

8. Electrodrive System Modeling Using Informative Properties of Autonomous Voltage Inverter Alexey V. Kasheutov, Tatyana A. Yatskaya, Alexander G. Garganeev 426

9. Simulation of the Multiple Port DC-DC Converter Dmitry V. Korobkov, Alexander N. Reshetnikov, Dmitry A. Shtein , Andrei V. Geist, Tatiana S. Sekushenko, Sergey V. Klassen 429

10. Discharge Characteristics of Lithium-Ion Accumulators under Different Currents Sergey V. Kuchak, Alexey N. Voroshilov, Evgeny A. Chudinov 435

11.Building a Non-Linear Model of the Synchronous Drive with Permanent Magnets as a Part of the Sensorless Automatic Control System Sergey V. Leonov, Kirill S. Vlasov, Danil F. Fedorov, Alexander Y. Zarnitsin

439

12. Experimental Test Results of the DC/DC Converter Prototype for Electroplating Installation Sergey V. Luft 443

vii

13.Double-loop Stabilization System of Output Voltage of High-Voltage Power Supply for Powerful Travelling Wave Tube Nicholai A. Kalistratov, Ekaterina E. Mirgorodskaya, Eugene D. Karnaukhov, Nikita P. Mityashin, Yuri B. Tomashevsky, Dmitry Yu. Vitkasov

446

14. General Principles of Medical Exoskeleton Design Maxim N. Nikolenko, Denis A. Kotin 450

15. Analysis of Element’s Parameters Influence on Characteristics of Distributed Compacts Series Compensators Dmitry I. Panfilov, Pavel A. Rashitov, Michail I. Petrov 455

16. Adaptive Mechatronic Management System of Wind-Driven Power-Plant with Variable Geometry Vladimir A. Kostjukov, Andrey M. Maevskiy, Nikolay K. Poluyanovich, Marina N. Dubyago 460

17. Transmission Line Model for Controlled Series Compensation Devices Evaluation Dmitry I. Panfilov, Michael G. Astashev, Alexander N. Rozhkov 465

18.Overview of Technical Means of Implementation of Neuro-Fuzzy-Algorithms for Obtaining the Quality Factor of Electric Power Vladimir A. Skolota, Irina A. Belova, Miroslav V. Martinovich

469

19. Research of Energy Recuperation Efficiency in Electric Transport Systems Egor A. Spiridonov, Mikhail V. Yaroslavtsev 473

20. Wide Temperature Range Low Drop Output Units Realized with 250 nm 40 V BCD Technology Igor K. Surin, Vladimir A. Ryzhkov, Vladislav Yu. Vasilyev 477

21. AC Voltage Regulator with per Phase Switches Aleksey V. Udovichenko, Andrey V. Sidorov 481

22. DC-DC Converter Simulation Modeling for Spacecraft Alyona S. Filatova 484

23. Analysis of Dynamic Properties of Resonant Converter in a Power Supply System of Autonomous Object Maxim A. Khoroshev, Denis V. Makarov, Alexander G. Volkov, Ilya V. Zaev 487

24. Design and Optimization of New Thyristors Controlled Reactors with Zero Harmonic Content Dmitry I. Panfilov, Ahmed E. ElGebaly, Michael G. Astashev 491

25. Three-Level Single-Phase Quasi-Z Source Inverter With Active Power Decoupling Circuit Elena Makovenko, Oleksandr Husev, Carlos Roncero-Clemente, Enrique Romero-Cadaval, Dmitri Vinnikov 497

26. Vibration Dynamics of an Electromagnetic Drive with a Half-Period Rectifier Lyudmila A. Neyman, Vladimir Yu. Neyman, Andrei S. Shabanov 503

27. New Conception of an Electromagnetic Drive for a Vibration Source in Hole Boris F. Simonov, Vladimir Yu. Neyman, Andrei S. Shabanov 507

28.The Synchronous Switching of Motor Power Supply from Frequency Converter to Grid for an AC Drives with Field-Oriented Vector Control Oleg V. Nos, Uwe Rädel, Liliya V. Starostina

511

29. New Method of the Synchronous Vibratory Electromagnetic Machine Mechatronic Module Control Lyudmila A. Neyman, Vladimir Yu. Neyman, Konstantin A. Obukhov 516

30. Power Conversion Quality of AC Buck Voltage Converter in Comparison with SCR Voltage Converter Roman L. Gorbunov 520

31. Asynchronous Electric Drive Control without Pre-Magnetization G. M. Simakov, V. Yu. Filushov, Yu. P. Filushov 525

32. Power Conversion Efficiency of AC Buck Voltage Converter Roman L. Gorbunov 529

33. Hybrid System of Reactive Power Compensation Andrey A. Petrov, Nikolay I. Shchurov, Marina V. Rozhkova 533

34. Time Domain and ZCS Approximation in Tristable Digital Buffer Amplifiers Engineering for Power Converters Andrey A. Antonov, Maksim S. Karpovich, Igor V. Pichugin, Vladimir A. Ryzhkov, Vladislav Yu. Vasilyev 537

35. Aspects of Common-Mode Leakage Current Suppression in Single-Phase PV-Generation Systems Evgeny V. Grishanov, Sergey V. Brovanov 541

36. Energy Efficiency Matching of Electric Traction Network with Double and Single-Way Circuits Evgeniy Y. Abramov, Nikolay I. Shchurov, Marina V. Rozhkova 547

37. Improvement of Single-Phase Alternating Rectifiers by Structural Synthesis Method Vladlen V. Ivanov, Sergey V.Myatezh, Nikolay I. Shchurov, Lola Sh. Atabaeva 551

viii

ix

38. Reliability Growth of Digital Electric Traction Network Protection Sergey M. Kuznetsov, Boris V. Malozyomov, Marina V. Rozhkova, Ivan S. Demidenko 556

39. Mathematical Model of a Battery Discharge Unit for Space Applications Sergey A. Kharitonov, Dmitriy V. Korobkov, Denis V. Makarov, Valery D. Yurkevich, Igor A. Bakhovtsev 560

40. Structural Model of a Magnetic Gearbox Anatoly V. Sapsalev, Andrey A. Achitaev, Alexander G. Pristup, Nikolay P. Savin, Sergey A. Kharitonov 568

41. Signal-Adaptive Controller for Micro Electric Drive Rotor Radial Displacement Updating Ilya S. Dymov, Denis A. Kotin 572

42.Applying the Estimation System for Synchronization of Thyristor Rectifier Operating from the Permanent Magnet Synchronous Machine Vadim E. Sidorov, Maksim A. Zharkov, Dmitry V. Korobkov, Maxim V. Balagurov, Alexander G. Volkov

579

43. Three-Port Bridge Converter for Stand-Alone Power System Aleksandr V. Sinyushin, Denis V. Makarov, Aleksandra L. Chupakhina, Sergey V. Luft 584

44.The Method of Classical Bridge Speeding with the Parasitic Capacitances across the Diagonally Opposite Pair of Junctions Ilya V. Pakhomov, Anna V. Bugakova, Nikolay N. Prokopenko

590

45.Simulation Model оf the Step-up DC-DC Converter with Auto-Transformer and the Results of the Analysis of Operation Modes Dmitry V. Korobkov, Roman V. Mikhaylov, Alexander G. Volkov

594

Section VI. Medical ElectronicsSection Chair: Vladimir K. Makukha

1. Information and Probability Approach to the Evaluation of Dynamic Heart System Oleg N. Bodin, Vitalij G. Polosin, Anatoly G. Ubiennykh, Dmitrij A. Arzhaev, Kasymbek A. Ozhikenov, Andrej Ju. Bodin 601

2.Portable Cardioanalyzer Oleg N. Bodin, Maksim I. Safronov, Kasymbek A. Ozhikenov, Arystambek K. Zhumagulov, Vitalij G. Polosin, Anatoly G. Ubiennykh

605

3.Distributed Computer Diagnostic System KardioVid on the Base of the Multi-Agent Technologies Oleg N. Bodin, Anatoly G. Ubiennykh, Anton S. Sergeenkov, Svetlana A. Balakhonova, Fagim K. Rakhmatullov, Kasymbek A. Ozhikenov

610

4.Dependence of Brightness of a Glow of Points of Compliance on Heart Rate Lilia I. Lisitsyna, Alexander A. Blokhin, Tatiana M. Starovoytova, Leonid G. Navrotsky, Natalia S. Chirkova, Alexander M. Fateev

613

5.Effect of Transfer of Light Energy on Acupuncture Meridians Lilia I. Lisitsyna, Leonid G. Navrotsky, Tatiana M. Starovoytova, Alexander A. Kamardin, Svetlana V. Belavskaya, Alexander A. Blokhin

616

6. Development of Wearable Sensor for Cardiographic Monitoring Dmitriy V. Vlasov, Vladimir K. Makukha, Ivan V. Tikhonov 619

7. Software Development for the Speech Signals Analysis Daria V. Borovikova, Vladimir K. Makukha 622

18th INTERNATIONAL CONFERENCE ON MICRO/NANOTECHNOLOGIES AND ELECTRON DEVICES EDM 2017 3

Effect of Ultrasonic Treatment on the X-band Microwave Absorption of Multiwalled Carbon

Nanocomposite

Olga A. Dotsenko, Anastasia O. Kachusova National Research Tomsk State University, Tomsk, Russia

Abstract – This paper presents results of calculation reflection coefficients multiwalled carbon nanotubes (MWCNTs)-laquer composites at microwave frequencies. Two groups of composite samples with 1.0% weight percentages of MWCNTs were fabricated and tested. The multiwall carbon nanotubes used in the composite were about 18.6 nm and 9.4 nm in diameter. As a result, it is shown that the use different morphology MWCNTs entered in the making of composite material and various ultrasonic treatment times provide the change both absorption region width and absorption peak depth.

Index Terms – MWCNT, composite, permittivity, reflection coefficients, ultrasonic treatment.

I. INTRODUCTION

The outstanding properties of multiwalled carbon nanotubes (MWCNTs) represent new opportunities

for creating novel multifunctional composite materials. Less weight, excellent thermal, mechanical and electronic properties of MWCNTs can be utilized for various applications, including higher efficiency electromagnetic (EM) wave absorbers for EM interference shielding [1].

Electromagnetic characteristics of CNT-based composites are governed by many factors, such as, polymer nature, geometry of CNTs (length, defect, etc.), concentration and distribution of nanotubes in matrix. Variation in any of these parameters could drastically change properties of the composite materials [2]. Dispersion and allocation of CNTs in polymer matrix are also important for composite properties [3]. It is believed that the amazing electrical properties of CNTs can be utilized to impart electrical conductivity to dielectric host, thereby improving electrostatic charge dissipation and electromagnetic (EM) shielding or absorbing efficiency [4, 5]. In recent years, MWCNTs/polymer composites have been extensively explored for potential applications in EM shielding or absorbing materials [6].

The application of nanotubes as independent materials is troublesome, because they possess volatility and low bulk density. For this reason, nanotubes are used as filler in the manufacture composite [2, 7–8], which can be used to solve problems of electromagnetic compatibility and radio components [9]. The binder material for production of polymer composite should have a good adhesive properties, high fluidity and high polymerization rate [11]. The permittivity depends on the nanotubes concentration in a composite, aspect ratio and the residues of catalytic metals [10–11].

Methods of changes of electrophysical properties of composite materials of external influences on their structure are investigated insufficiently. One way to change the internal structure of composite materials is ultrasonic treatment [12–13]. Ultrasonication can produce thermodynamically stable MWCNTs mixture and after sonication MWCNTs are separated [14].

II. PROBLEM DEFINITION

The present work is devoted to investigation of the impact of ultrasonic treatment and influence of geometry MWCNTs on electrophysical characteristics MWCNT-based composites. Electromagnetic characteristics of composites were studied using a vector network analyzer, Agilent Technologies E8363B, and volume multimode rectangular cavitу that cover the frequency range 7 – 12 GHz. We also used Mathcad program for calculation reflection coefficients.

Section III is described calculation absorption characteristics. Section IV is devoted to the measuring equipment and composites manufacturing technique. Section V is devoted to obtained results and substantiated them.

III. THEORY

The electromagnetic reflection property of a material is usually characterized in terms of the power reflection of a plane wave reflected from an infinite metallic surface. There is reflectivity or return loss of composites, generally produced for normal incidence, is expressed in decibels [17]

0

020log in

in

Z ZR Z Z−= +

, (1)

where 000 εµ=Z is propagation number of empty

space, Zin is free space boundary impedance, we estimate optimal thickness of absorbing layer, located on a perfectly conducting surface. Free space boundary impedance is determined by formula

( )*

* *00 0*

0

tanh 2inZ i dfµ µ π µ µ ε εε ε

= (2)

4 18th INTERNATIONAL CONFERENCE ON MICRO/NANOTECHNOLOGIES AND ELECTRON DEVICES EDM 2017

where f is electromagnetic field frequency, d is material thickness, μ*, ε* are complex permeability and permittivity of material.

Based on (1) and (2), the return losses RL, as a function of frequency f, are calculated at different thicknesses of samples.

IV. EXPERIMENTAL RESULTS

A. Composites Manufacturing Technique

The fillers of composites were multiwalled carbon nanotubes. MWCNTs were obtained by catalytic gas-phase deposition of ethylene in the presence of FeCo catalyst in Institute of Catalysis SB RAS [15]. The average nanotubes diameters are 18.6 nm and 9.4 nm, purity > 90%. Nanotubes with about 18.6 nm diameter contain remainders of catalyst about 7.0%.

Urethane alkyd lacquer was used for production of experimental samples. In the liquid state its viscosity is known to be small. This allows a filler to be moved easily. For the production of mix for experimental samples 1wt.% of MWCNT was added to 99.0 wt.% of lacquer. The mixture was placed in a glass beaker. The mixture was sonicated by the ultrasonic device “Alena” (Acoustic Processes & Devices lab Biysk Technological Institute, Russia). It consists of ultrasonic generator and ultrasonic vibrating system with installed working tool (the diameter is 10 mm). Working tool was inserted into a glass beaker with mixture. The mixture was sonicated for 1, 2, 3, 4 and 5 minutes at 28 kHz frequency at 50 VA power. Mixtures were molded into a planar plate, which size is 70 mm × 20 mm × 0.5 mm. Process of polymerization was carried out for 48 hours at the room temperature.

B. Measuring equipment

The cavity perturbation technique was used for the evaluation of dielectric properties of the materials in X-band of microwave frequencies. In this technique, a cavity was designed with a very small slot at the centre of the broad/short wall of rectangular waveguide in order to insert the sample material. Agilent’s E8363B vector network analyzer was used to measure of electromagnetic response of the rectangular cavity that covers the frequency range 7 – 12 GHz. When the sample is advanced into the cavity, the intensity of the microwave field in the cavity, the frequency shifts, and the width of the resonance at half-power-maximum are changed according to the electrophysical properties of the sample loading into the cavity. The measuring sample was a long and thin rod with sizes 2×2×70 mm3. Complex permittivities were calculated using the approximation of the perturbation method [16]. Measurements were made at temperature of 24 ± 1 °С. The measurement error is about 5 percent.

V. DISCUSSION OF RESULTS

Fig. 1 shows the complex dielectric permittivity charts of the composite material samples without ultrasonic treatment.

It shows that permittivity of the samples is constant over the frequency range. Ultrasonic treatment tends to change of the permittivity value. More details are given in articles [9, 14]. The data from Fig. 1 were taking as a basis for reflection coefficient calculation.

Fig.1. Spectra of complex permittivity of composites (span 8 – 12 GHz)

At present research thicknesses samples were equal 0.2 сm and 0.5 сm. Concentration of MWCNTs in the samples is 1.0 wt.%. Some results are shown in Fig. 2 – Fig. 5. Fig. 2 and Fig. 3 show the reflection curves RL-f for the composites based on MWCNTs with outer diameter 18.6 nm (Set A). Fig. 4 and Fig. 5 show the reflection curves RL-f for the composites based on MWCNTs with outer diameter 9.4 nm (Set B).

All figures show that the reflection coefficient does not change linearly with increasing ultrasonic treatment time. The increase an ultrasonic treatment time leads to displacement of reflection coefficient down and up in frequency range.

Fig.2. Calculated reflection curves RL-f for set A with thickness 0.2 cm

The samples from set A with 4 min and 5 min ultrasonic treatment have equal reflection coefficients. It is reason that there are five reflection coefficient curves in Fig. 2 and Fig. 3.

With regard to samples from set B, we can see all reflection coefficient curves in Fig. 4 and Fig. 5.

The results of investigation of samples with 0.2 cm thicknesses are following. We must to see the level scatter electromagnetic radiation power, when the reflection coefficient is lower 50%. The sample of composite based

18th INTERNATIONAL CONFERENCE ON MICRO/NANOTECHNOLOGIES AND ELECTRON DEVICES EDM 2017 5

on 9.4 nm MWCNTs without ultrasonic treatment had absorption region at 12 GHz and above, while the sample of composite based on 18.6 nm had absorption region from 6.5 GHz till 10.0 GHz. The absorption region of this composite shifted up and down at frequency range. The ultrasonic treatment is a reason of this move.

According to Fig. 2 – Fig. 5 the Table 1 was compiled. Table 1 contains information about the absorption regions of experimental samples.

Fig.3. Calculated reflection curves RL-f for set A with thickness 0.5 cm

Fig.4. Calculated reflection curves RL-f for set B with thickness 0.2 cm

Fig.5. Calculated reflection curves RL-f for set B with thickness 0.5 cm

Increasing time of ultrasonic treatment leads to modifies width and frequency boundary of absorption area (see Fig. 2 and Fig. 4). The greatest absorption was observed in both composites after 3 minutes of ultrasonic treatment.

This behavior of reflection coefficients could be explained by the impact of ultrasonic treatment which breaks the agglomerates of MWCNTs and they are evenly distributed over the volume of the composite. MWCNTs have a lot of structural defects [2]. Due to the fact that ultrasonic treatment was carried out by submerged ultrasonic probe, MWCNTs have broken. This led to the modify characteristics of the material. About these conversion electromagnetic characteristics of the composite under the action of the ultrasonic treatment we have already mentioned [9]. It has been shown that there are optimal processing times, which increase both real and imaginary part of permittivity. A study of the reflection coefficient in this article showed similar results.

Thus the results of our investigation are following (Fig. 2 – Fig. 5). We can change the absorption region width of composite sample by changing material thickness and ultrasonic treatment time.

VI. CONCLUSION

Consequently, it is shown that the use different morphology MWCNTs that enter in the making of composite material

TABLE IEFFECT OF ULTRASONIC TREATMENT ON ABSORPTION REGION OF COMPOSITES

Time, min

Samples0 1 2 3 4 5

MWCNTs, nm Thickness, cm Absorption region, GHz

9.40.2 > 12.1 > 11.3 > 9.3 > 8.7 > 10.2 > 10.6

0.5 4.8–7.8 4.5–7.3 3.7–5.9 > 11.4

3.5–5.4 > 10.7

4.1–6.5 > 12.3

4.3–6.8 > 12.9

18.6

0.2 6.6–9.8 > 9.6 > 12.4 5.2–7.3 > 11.2 > 11.2

0.5 2.6–3.9 8.3–10.7

3.8–6.0 > 11.6 4.9–8.0

2.0–2.9 6.5–8.0 11.2–12.9

4.5–7.2 > 13.4

4.5–7.2 > 13.4

6 18th INTERNATIONAL CONFERENCE ON MICRO/NANOTECHNOLOGIES AND ELECTRON DEVICES EDM 2017

and various ultrasonic treatment times provide the change both absorption region width and absorption peak depth. On the basis of obtained data it is possible to produce an attenuating material by changing the type of filler or time of the UST.

ACKNOWLEDGMENT

The authors would like to thank the Center Radiophysical measurements, diagnostics and research parameters of natural and artificial materials of Tomsk State University for the equipment provided.

Authors are thankful to V.I. Suslyaev, V.A. Zhuravlev and G.E. Kuleshov of National Research Tomsk State University for helping in measurements and discussions during the course of this work.

This Research is supported by Tomsk State University Competitiveness Improvement Program.

REFERENCES[1] Ye Z., Li Z., Roberts J.A., Zhang P., Wang J.T., Zhao G.L.

Electromagnetic Wave Absorption Properties of Carbon Nanotubes-Epoxy Composites at Microwave Frequencies // J. Appl. Phys. 2010. V. 108. p. 054315.

[2] Sedelnikova O.V., Kanygin M.A., Korovin E.Yu., Bulusheva L.G., Suslyaev V.I., Okotrub A.V. Effect of fabrication method on the structure and electromagnetic response of carbon nanotube/polystyrene composites in low-frequency and Ka bands // Composites Science and Technology. 2014. V. 102. pp. 59-64.

[3] Breuer O., Sundararaj U. Big returns from small fibers: A review of polymer/carbon nanotube composites // Polym. Comp. 2004. V. 25. pp. 630-645.

[4] Sen R., Zhao B., Perea D., Itkis M.E., Hu H., Love J., Bekyarova E., Haddon R.C. Preparation of single-walled carbon nanotube reinforced polystyrene and polyurethane nanofibers and membranes by electrospinning // Nano Letters. 2004. V. 4. pp. 459-464.

[5] Xiang C., Pan P., Liu X. Microwave attenuation of multiwalled carbon nanotube-fused silica composites // Applied Physics Letters. 2005. V. 87. No. 12. pp. 123103-123103-3.

[6] Peng Z.H., Peng J.C., Peng Y.F., Wang J.Y. Complex Conductivity and Permittivity of Single Wall Carbon Nanotubes/Polymer Composite at Microwave Frequencies: A Theoretical Estimation // Chinese Science Bulletin. 2008. V. 53. pp. 3497-3504.

[7] Kuleshov G. E., Dotsenko O. A., Ulyanova O. A., Suslyaev V. I. Interaction of microwave radiation with composites containing nanosized hexaferrite, multiferroics, carbon nanostructures and silicon binder // International Journal of Nanotechnology. 2015. V. 12. No. 3-4. pp. 200-208.

[8] Zhao T., Hou C., Zhang H., Zhu R., She S., Wang J., Li T., Liu Z., We B., Electromagnetic wave absorbing properties of amorphous carbon nanotubes // Scientific Reports. 2014. V. 4. p. 5619. doi: 10.1038/srep05619.

[9] Dotsenko O.A., Kachusova A.O., Influence of Ultrasonic Treatment on Electromagnetic Characteristics of Composites Based on Multiwall Carbon Nanotubes at Microwave Frequencies // Key Engineering Materials. 2016. V. 683. pp. 65-70.

[10] Suslyaev V.I., Kuznetsov V.L., Zhuravlev V.A., Mazov I.N., Korovin E.Y., Moseenkov S.I., Dorozhkin K.V. An investigation of electromagnetic response of composite polymer materials containing carbon nanostructures within the range of frequencies 10 MHz – 1,1 THz // Russian Physics Journal. 2013. V. 55. No. 8. pp. 970-976.

[11] Dotsenko O.A., Kachusova A.O. Effect of ultrasonic treatment on permittivity of composites based on multiwall carbon nanotubes // 25th International Crimean Conference Microwave &Telecommunication Technology Conference Proceedings 1. 2015. pp. 703-704.

[12] Fromyr T.R., Hansen F.K., Olsen T. The optimum dispersion of carbon nanotubes for epoxy nanocomposites: evolution of the particle size distribution by ultrasonic treatment // Journal of Nanotechnology. 2012. V. 14. pp. 545930-545930-14. doi:10.1155/2012/545930

[13] Caneba G.T., Dutta С., Agrawal V. Novel Ultrasonic Dispersion of Carbon Nanotubes // J. of Minerals & Materials Characterization & Engineering. 2010. No. 9. pp. 165-181.

[14] Ulianova O.A., Dotsenko O.A., Kachusova A.O., Polivanova A.S.,

Effect of ultrasonic treatment on electromagnetic properties of composites based on multiwall carbon nanotubes at microwave frequency range, 17th International Conference on Micro/Nanotechnologies and Electron devices EDM 2016. pp. 48-51.

[15] http://www.catalysis.ru/block/index.php?ID=3&SECTION_ID=1513 [16] Erdogan L., Akyel C., Ghannouchi F.M. Dielectric Properties of Oil

Sands at 2.45 GHz with TE1,0,11 Mode Determined by a Rectangular Cavity Resonator // Journal of Microwave Power and Electromagnetic Energy. 2011. V. 45. Iss. 1. pp. 15-23.

[17] Li Z.W., Yang Z.H. Microwave absorption properties and mechanism for hollow Fe3O4 nanosphere composites // Journal of Magnetism and Magnetic Materials. 2015. V. 387. pp. 131-138.

Olga A. Dotsenko (1968) received the Ph.D. degree in radiophysics from the Tomsk State University, Russia, in 2007.Presently, she is lecturer at National Research Tomsk State University, Faculty of Radiophysics. Her research activities deal with electromagnetic wave propagation in magnetic and dielectric materials and the analysis of measurement methods for the microwave characterization of materials, and modeling of magnetic and dielectric materials.

Anastasia O. Kachusova (1994) is student of National Research Tomsk State University, Faculty of Radiophysics. Her research activities deal with influence of ultrasonic treatment on electromagnetic characteristics of composites based on multiwall carbon nanotubes at microwave frequencies.