Department of Physics

Prof SC Ray

College of Science, Engineering and Technology
School of Science
Department: Physics
Professor
Tel: 011 670 9065
E-mail: Raysc@unisa.ac.za

Expertise

  • Carbon nano structure materials
  • Condensed matter physics
  • Magnetic matertials
  • Nanoscience and Nanotechnologysolar energy materials
  • Photovoltaic materials

Qualifications

  • PhD (Physics) – University of North Bengal, Darjeeling, India
  • MSc (Physics) – APS University, Rewa, India.

NRF Rating

B3

Currently teaching

  • Solid State Physics
  • Condensed Matter Physics

Fields of academic interests

Experimentalist: Solid State, Condensed Matter

My research area is on experimental and soft matter Physics. I perform synthesis and characterization of 0-D materials like carbon nano-balls (CNBs), 1-D materials (Carbon nanotubes), 2-D materials (Graphene and graphene nanoflakes) and 3-D materials (Amorphous carbon, Graphite and diamond-like carbon). I study these materials for electronic and magnetic properties for future spintronic applications.

Field of Specialisation

  • Solid State Physics
  • Condensed Matter Physics

Journal articles

  • Sekhar Chandra Ray, Magnetism and Spintronics in carbon and carbon nanostructureed materials. Micro & Nano Technologies Series, Elsevier publication 2020, ISBN: 978-0-12-8176680-1.
  • Ganya and Ray et. al.,Tuning the electronic and magnetic properties of PEDOT-PSS-coated graphene oxide nanocomposites for biomedical applications. J. Materials. Research 2020 (ASAP)
  • Zheng, and Ray et al., Correlation among photoluminescence and the electronic and atomic structures of Sr2SiO4:xEu3+ phosphors: X-ray absorption and emission studies, Sci. Reports 10 (2020) 12725.
  • Makhetha and Ray et al., Zeolitic Imidazolate Framework-8-Encapsulated Nanoparticle of Ag/Cu Composites Supported on Graphene Oxide: Synthesis and Antibacterial Activity, ACS Omega 5/17 (2020) 9626.
  • Thoka and Ray et al., Microstructure and electronic properties of ultra-nano-crystalline-diamond thin films, Journal of Electron Spectroscopy and Related Phenomena, 242 (2020) 146968.
  • Wadhwa and Ray et al.  Engineering of luminescent graphene quantum dot-gold (GQD-Au) hybrid nanoparticles for functional applications, MethodsX 7 (2020)100963.
  • Zhao, Soin and Ray et al. Expanding the portfolio of tribo-positive materials: Aniline formaldehyde condensates for high charge density triboelectric nanogenerators, Nano Energy 67 (2020) 104291.
  • Gaolatlhe and Ray et al., Voltammetric responses of porous Co3O4spinels supported on MOF-derived carbons: Effects of porous volume on dopamine diffusion processes, J. Electroanalytical Chemistery (2020) 113863.
  • Ganya and Ray et al., Polyacrylate grafted graphene oxide nanocompositess for biomedical applications, Journal of Applied Physics 127/5 (2020) 054302.
  • Vasantham and Ray et al., Paper based point of care immunosensor for the impedimetric detection of cardiac troponin I biomarker, Biomedical Microdevices 22/1 (2020) 1-6.
  • Mkhohlakali and Ray et al, Applied Surface Science, 502 (2020) 144158.
  • Idisi and Ray et al.  Magnetic properties of graphene oxide functionalized with “Au” and “Fe2O3” nanoparticles: A comparative study, Materials Today: Proceedings 2020 (ASAP)

Professional positions, fellowships & awards

  • Achieved NRF B3 rating (south Africa) in 2011-2016 and 2017-2022
  • Chancellor’s award for Excellence in Research 2015.
  • Member of Academy of Science of South Africa (ASSAf), since 2014
  • NRF / DST – NNEP “R 7.3 M” grant for purchasing new XPS equipment in 2014
  • Member of Editorial board “Scientific Reports” --- Nature Publishing Journal (NPJ) group, peer reviewed and refereed journal (since 2014).
  • Jan. 2011 – March 2011-Visiting Associate Professor at Physics Department, Tamkang University, Taiwan
  • Oct. 2008 - July 2009 – Visiting scientist; IACS, Kolkata, India
  • Nov. 2005 - July 2008 - NSC fellow in Taiwan
  • Aug.2005 - Oct.2005 – Brain Pool Scientist Position in South Korea
  • Jan.2004 - Jun.2005 –Spanish Govt. foreigner fellow in Spain
  • Nov.2002 - Dec.2003 –NSC fellow in Taiwan
  • Nov.2000 - Oct.2002 –INFM fellow in Italy

Projects

  • Graphene / Graphene oxide and TiO2 nanocomposites thin films (2D-materials)
  • Graphene / Graphene oxide and ZnO nanocomposites thin films (2D-materials)
  • MoS2 - Graphene oxide nanocomposites thin films (2D-materials)
  • Stanene / Stanene oxide thin films (2D-materials)
  • Determination of Work functions of different semiconductor materials