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Department of Physics
Susanta Sinha Roy
Associate Professor,
Department of Physics,
School of Natural Sciences
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Education Details
Ph. D (Physics), Indian Association for the Cultivation of Science, Jadavpur, 1998 
M. Sc. (Physics), University of Calcutta, 1993
B. Sc. Honors in Physics (1990) from Calcutta University, India. Minors: Mathematics, Chemistry
Professional Experience
Research Associate, Department of Mechanical Engineering, University of Alberta, Canada, 2012
Research Fellow, Nanotechnology and Bioengineering Research Centre, School of Engineering, University of Ulster, UK, 2011
Postdoctoral Researcher, Department of Pure and Applied Physics, Queen's University, Belfast, UK, 2002-2003
Research Scientist, Department of Physics and Geoscience, University of Leipzig, Germany, 2001
Postdoctoral Researcher, Department of Physics and Astronomy, University of Manchester, UK, 2000
Research Interests
We aim to understand the structure and properties of functionalized nano-materials, nano-structured surfaces and develop new concepts suitable for sensor, microfluidic and energy applications. Our group is involved in producing variety of nanoscale structures (such as ultrathin carbon films and nanotubes, graphene as well as zinc oxide) using chemical and physical vapour deposition techniques. Carbon based nano-materials have remarkable thermal, electrical, optical, surface and mechanical properties. Moreover, it is essential to study surface and tribological properties for their efficient use in sensor, energy and electronic devices.
Select Publications
  1. Application of Oil-swollen Surfactant Gels as a Growth Medium for Metal Nanoparticle Synthesis, and as an Exfoliation Medium for Preparation of Graphene: R. K Upadhyay, P. R. Waghmare and S. S. Roy, Journal of Colloid And Interface Science, DOI: 10.1016/j.jcis.2016.04.007 (2016)

  2. Grape extract assisted green synthesis of reduced graphene oxide for electrochemical and water treatment applications: RK Upadhyay, N. Soin, G. Bhattacharya, S. Saha, A. Barman and S. S. Roy, Materials Letters, 160, 355- 358 (2015)

  3. Experimental studies of surface-driven capillary flow in PMMA microfluidic devices prepared by direct bonding technique and passive separation of microparticles in microfluidic laboratory-on-a-chip systems: S. Mukhopadhyay, J. P. Banerjee, A. Mathur, M. Tweedie, J. McLaughlin and S. S. Roy, Surface Review and Letters, 22, 1550050 (2015)

  4. Fast and facile preparation of CTAB based gels and their applications in Au and Ag nanoparticles synthesis: RK Upadhyay, N Soin, S. Saha, A. Barman and S. S. Roy, Mat. Chem. Phys. 156, 1055 (2015)

  5. Optical, structural, catalytic and electrochemical properties of the Au nanoparticles synthesized using CTAB based gels: RK Upadhyay, S Deshmukh, S. Saha, A. Barman and S. S. Roy, Journal of Materials Science: Materials in Electronics 26 (10), 7515 (2015)

  6. Recent advances in thermoelectric materials and solar thermoelectric generators – a critical review: P. Sundarraj, D. Maity, S. S. Roy and R. A. Taylor, RSC Advances 4, 46860 (2014).

  7. Diameter control of single wall carbon nanotubes synthesized using chemical vapor deposition. Carbon: S. Roy, R. Bajpai, N. Soin, S. S.Roy, J. A. McLaughlin, D. S Misra, Applied Surface Science 321, 70-79 (2014).

  8. Graphene Supported Graphone/Graphane Bilayer Nanostructure Material for Spintronics: SC Ray, N Soin, T Makgato, CH Chuang, WF Pong, S. S Roy, SK Ghosh, André M Strydom, JA McLaughlin, Scientific reports 4, (2014).

  9. Role of graphene/metal oxide composites as photocatalysts, adsorbents and disinfectants in water treatment: a review: RK Upadhyay, N Soin, S. S Roy, RSC Advances 4 (8), 3823 (2014).

  10. Electrochemical and Oxygen Reduction Properties of Pristine and Nitrogen doped Few Layered Graphene Nanoflakes (FLGs): N. Soin, S. S. Roy, S. Sharma, T. Thundat, J. A. McLaughlin, Journal of Solid State Electrochemistry (in press). doi:10.1007/s10008-013-2073-8

  11. Effects of Channel Aspect Ratio, Surface Wettability and Liquid Viscosity on Capillary Flow Through PMMA Sudden Expansion Microchannels: S. Mukhopadhyay, J.P. Banerjee and S. S. Roy Adv. Sci. Focus. 1, 139 (2013).

  12. Pore-scale interfacial dynamics and oil-water relative permeabilities of capillary driven counter-current flow in fractured porous media: A. Gunde,T.Babadagli, S. S. Roy, and S. K. Mitra, J. Petroleum Sci. Eng.,DOI: 10.1016/j.petrol.2013.02.005

  13. Effects of liquid viscosity, surface wettability and channel geometry on capillary flow in SU8 based microfluidic devices: S. Mukhopadhyay, J.P. Banerjee and S. S. Roy, International Journal of Adhesion & Adhesives. 42, 30 (2013).

  14. Nanocrystalline Ruthenium Oxide dispersed few layered graphene (FLG) nanoflakes as supercapacitor electrodes: N. Soin, S. S. Roy, S. K. Mitra, T. Thundat, and J. A. McLaughlin, J. Materials Chemistry, 22, 14944 (2012).

  15. Oxygen plasma assisted end-opening and field emission enhancement in vertically aligned multiwall carbon nanotubes: A. Mathur, S. Wadhwa, S. S. Roy, K. S. Hazra, S.C. Ray,  D. S. Misra, S. K. Mitra, and J. A. McLaughlin, Mat. Chem. Phys. 134, 425 (2012)

  16. Thickness dependent electronic structure of ultra-thin tetrahedral amorphous carbon (ta-C) films: N. Soin, S.S. Roy, Anisur Rahman, Sekhar Chandra Ray, P. Lemoine, R. D'Sa, P. Maguire, S. K. Mitra and J.A. McLaughlin, Thin Solid Films, 520(7), 2909 (2012).

  17. Graphene oxide for electrochemical sensing applications: S. Roy, N. Soin, R. Bajpai, D. S. Misra, J. A. McLaughlin and S. S. Roy, Journal of Material Chemistry21, 14725 (2011).

  18. Comparative in vitro cytotoxicity study of carbon nanotubes and titania nanostructures on human lung epithelial cells: S. Wadhwa, A. Mathur, P. O’Hare, S. S. Roy, P. Dunlop, J. Hamilton, T. Byrne, B. Meenan, J. McLaughlinJournal of Hazardous Materials, 191, 56 (2011).

  19. Nanoscale surface modifications to control capillary flow characteristics in PMMA microfluidic devices: S MukhopadhyayS. S. Roy, R A D’Sa, A Mathur, R J Holmes and J. A. McLaughlin, Nanoscale Research Letters. 6, 411 (2011).

  20. Enhanced and Stable Field Emission from in situ Nitrogen Doped Few Layered Graphene (FLG) Nanoflakes: N. Soin, S. S. Roy, S. Roy, K. S. Hazra, D. S. Misra,  T. H. Lim,  and CJD Hetherington and J. A. McLaughlin, The Journal of Physical Chemistry C, 115, 5366 (2011).

  21. Enhanced field emission and improved supercapacitor obtained from plasma modified bucky paper: S. Roy, R. Bajpai, N. Soin, P. Bajpai, K. S. Hazra, N. Kulshrestha, S. S, Roy,J. A. McLaughlin, and D. S. Misra, Small, 7, 688 (2011).

  22. Exploring the fundamental effects of deposition time on the microstructure of graphene nanoflakes by Raman scattering and X-ray diffraction: N. Soin, S. S. Roy, C. O'Kane, J. A. McLaughlin, T. H. Lim,  and CJD HetheringtonCryst. Eng. Comm, 13, 312 (2011).

  23. Controlled Thinning of Multi-layer Graphene to Mono-Layer Graphene by Plasma Treatment: K. S. Hazra , J. Rafiee , M. Rafiee , A.  Mathur A, S. S.Roy, J. A. McLauhglin , N. Koratkar and D. S. MisraNanotechnology22, 025704, (2011).
Report of Invention (ROI)
Development of an on-chip electrochemical sensor for the analysis of dissolved inorganic carbon in underground water: S. S. Roy and S. K. Mitra. Canadian Report of Invention submitted. Application No: 2011052 (2011).
National & International Recognition:
Qualified Graduate Aptitude Test for the Engineers (GATE), in 1993 and awarded research fellowship for five years (1993-1998).
Visiting scientist award at the University of Leipzig, Germany (2001). UKIERI Research award 2006.
Invest-Northern Ireland (NI) trade mission participants to India (2007) and USA (2006).
Associate member of Canadian Medical and Biological Engineering Society (2011-1012).
Executive Summary
Dr. Susanta Sinha Roy obtained his M.Sc in Physics from Calcutta University and Ph.D. from Jadavpur University, India. Dr. Roy has teaching experience in courses of materials science and engineering, bio-medical engineering and molecular spectroscopy. He has expertise on three research areas: i) Nanomaterial synthesis and characterisation, ii) Physics of fluid flow in micro-channel, iii) Dielectric and electrochemical measurements. He has supervised 3 Ph.D. students and 7 Masters students, published over 60 research papers in peer reviewed journals of international repute, presented over 50 conference papers and completed four sponsored projects. He has collaboration with national and international centers of excellence in research including, University of Alberta, Canada, Ulster University, UK, IIT Mumbai, Oxford University, UK and University of Witwatersrand, South Africa.
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