Department of Physics
College of Science, Engineering and Technology |
School of Science |
Department: Physics |
Professor
|
Tel: |
011 670 9065
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E-mail: |
Raysc@unisa.ac.za
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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
- World’s Top 2% Scientists in 2019 [Ref.: Ioannidis, P.A., Boyack, K.W. & Baas, J. 2020. Updated science-wide author databases of standardized citation indicatords. PLOS Biology 18, e3000918. https://doi.org/10.1371/journal.pbio.3000918]
- and 2020 [Ref.: Baas, J., Boyack, K. & Ioannidis, J. 2021. August 2021 data-updatefor “Updated science-wide autor databases of standradized citationindicators”. Mendeley Data, v3. DOI:10.17632/btchxktzyw.3] compiled by the Stanford University, USA.
- 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).
- July 2021- Visiting Professor, Physics Department, Tamkang University, Taiwan
- 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