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12/25/2014 ..:: Dr. Laxmidhara Besra ::..

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Home | Contact UsThursday, December 25 2014, 5:06:23 PM

LAXMIDHARBESRA, Ph.D. (Metallurgical & Materials Engg.)

Contact Address:

Colloids & Materials Chemistry Department,

Institute of Minerals & Materials Technology (CSIR),

Acharya Vihar, Bhubaneswar - 751 013,

Odisha, India

Phone: 0674-2581635 - Ext. 244

E-mail: ldbesra@immt.res.in

ldbesra@yahoo.com

Research

Solid Oxide Fuel Cells: Our research focuses on development of cell components for anodesupported solid oxide fuel cells (SOFC), alternative electrolyte materials of high ionic conductivity

(e.g. GDC and LaGaO3 based oxides), anode materials with redox tolerance, sulfur tolerance, and

carbon tolerance, cathode materials of enhanced conductivity based on LaMnO3 doped with rare earth

elements, composition and microstructure optimisation to achieve high open circuit voltage, low

polarization losses, high power output and long term stability, develop fundamental understanding to

arrive at a rationale design of SOFC operating at intermediate temperatures (about 700 oC), stack

development.

Innovative Ceramic Processing & Coatings: We use using colloidal based ceramic processing

techniques for direct consolidation of structural and functional ceramics. Some processing techniques

used are: Gelcasting, slipcasting, spin coating, dipcoating, Electrophoretic deposition (EPD) etc. We

have developed an innovative process of EPD on non-conducting substrates by use of optimized

porous substrate and by using a thin layer of conductive polymer layer on the substrate before EPD.

Our studies also includes development of water-based EPD process by pulse DC application. Our

coating activity focuses on development of innovative thermal barrier coatings, functionally graded

coatings, engineered porous coatings, improved adhesive coating of bioactive materials such as

hydroxyapatite (HAp) on Ti and Ti alloy based implants etc.

Nanostructured Materials: Preparation of periodic arrays of nanoparticles in 2-D and 3-D over large

domain is important for a number of application including data storage media, photonic crystals,

electronics, sensors (gas sensors, biosensors etc), advanced ceramics and nanopatterning

technology. Attributes of ordered particle assemblies highly desirable in most miniaturized products

of technological importance include long-range order, high packing density, high surface to volume

ratio, and reproducible shape and dimensions. The development of such structures is currently

hindered by an inability to conveniently and economically form such materials in large quantities,

preferably under ambient conditions.

Our research in this area includes development of patterned micro and nano-ordered arrays of

functional materials into patterned and ordered array of templates formed by self-assembly, photo

lithography, block co-polymer etc. Incorporation of nanoparticles into the templates are being done

by electrophoretic deposition. We are studying the application of such nanostructures for gas sensors.

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