1. Nanostructured materials for energy conversion and storage: Supercapacitors, Photovoltaics; Multifunctional devices; Raman and photoluminescence spectroscopy.

2. Biophysics: Biomolecule-metal hybrid systems; Electron transfer in metalloproteins; SERS.

1. Young Scientist Program (YSP 2018) fellowship by YSP of IUBMB (International Union of Biochemistry and Molecular Biology)- 2018.

2. Bursary Award by International Union for Pure and Applied Biophysics (IUPAB) - 2016.

3. Sponsored Projects:

4. Graphene - silicon nanowire based Schottky junction solar cells for enhanced light harvesting, Funding Agency: Science and Engineering Research Board (SERB), Sanctioned Amount: 51.57 Lakhs (INR) (2017-21)

Teaching

1. Assistant Professor, Physics: IIITDM Kancheepuram, April 2018 to Present

2. Assistant Professor, Physics: National Institute of Technology Meghalaya, July 2015 to March 2018

Research

1. Postdoctoral Fellow: Biophysics & Nanoscience Centre, Universita della Tuscia, Italy, 2013-2014

1. Biochemical Society (UK): (ID) 01075548, Early Career Member

2. American Chemical Society (ACS): (ID) 31473019, Regular Member

1. Reviewer:

2. 1. Journal of Hazardous Materials

3. 2. Silicon

1. Engineering Electromagnetics (PHY 107T)

2. Photovoltaic Science & engineering (PHY 507)

3. Engineering Optics (PH2000)

4. Engineering Mechanics (PHY 108T)

1. 4. "Raman scattering in crystalline, amorphous and nanocrystalline silicon" Vivek Kumar and A.K. Shukla, Book title: Advances in Laser Physics and Technology, edited by Man Mohan, Anil Kumar Maini, Aranya B. Bhattacherjee and Anil K. Razdan, Cambridge University Press India (2015), Page No. 135 [ISBN: 9789384463410].

2. 3. "Optical properties of silicon nanowires for LEDs and photovoltaic applications" Saurabh Dixit, Vivek Kumar and A.K.Shukla, Book title: Advances in Nanoscience, edited by A. K. Shukla, P. K. Jha and Man Mohan, Nirmal Publication India (2015), Page No. 298 [ISBN: 9788193175163].

3. 2. "Raman study of electron-phonon interaction in silicon nanostructures" A.K. Shukla and Vivek Kumar, Book title: Advances in Nanoscience, edited by A. K. Shukla, P. K. Jha and Man Mohan, Nirmal Publication India (2015), Page No. 87 [ISBN: 9788193175163].

4. 1. "Raman scattering from laser etched silicon nanostructures" A.K. Shukla, Vivek Kumar and Bipin Josi, Book title: Processing and Characterization of Advanced Nanostructured Materials, Editors: V. Rajendranm, B. Hillbrands, N. Meenashisundaram and K.E. Geckerler, Macmillan Publications India (2010), Page No. 203, [ISBN: 9780230331990].

1. 27. “DFT study of hydrogen interaction with transition metal doped graphene for efficient hydrogen storage: effect of d-orbital occupancy and Kubas interaction” Karthick Raja K, T Anusuya and Vivek Kumar*, Physical Chemistry Chemical Physics 25, 262 (2023). (Impact factor = 3.945)

2. 26. “Deconvolution and quantification of defect types from the first order Raman spectra of graphene oxide derivatives” T Anusuya, D K Pathak, Rajesh Kumar and Vivek Kumar*, FlatChem 35, 100422 (2022). (Impact factor = 5.829)

3. 25. “The effect of dopant on light trapping characteristics in random silicon nanowires for solar cell applications” Vikas Kashyap, Chandra Kumar, Vivek Kumar, Neeru Chaudhary and Kapil Saxena, Physica B: Condensed Matter 638, 413953 (2022). (Impact factor = 2.988)

4. 24. “Induced quantum-fano effect by Raman scattering and its correlation with field emission properties of silicon nanowires” Vikas Kashyap, Chandra Kumar, Vivek Kumar, Neeru Chaudhary and Kapil Saxena, Applied Physics A 128, 312 (2022). (Impact factor = 2.983)

5. 23. “Electrochemically reduced graphene oxide/nano-WO3 composite-based supercapacitor electrodes for better energy storage” Tanushree Ghosh, Suchita Kandpal, Manushree Tanwar, Devesh K. Pathak, Chanchal Rani, T. Anusuya, Vivek Kumar, Rajesh Kumar, and Anjali Chaudhary, The European Physical Journal Special Topics 231, 2927 (2022). (Impact factor = 2.891)

6. 22. “Reduction-controlled electrical conductivity of large area graphene oxide channel” T. Anusuya, D. Prema and Vivek Kumar*, Journal of Materials Science: Materials in Electronics 33, 8935 (2022). (Impact factor = 2.779)

7. 21. “Quantifying Size Dependent Electron Emission from Silicon Nanowires Array” Devesh K Pathak, Manushree Tanwar, Chanchal Rani, Suchita Kandpal, Tanushree Ghosh, Priyanka Yogi, T Anusuya, Puspen Mondal, Anjali Chaudhary, Vivek Kumar* and Rajesh Kumar*, Silicon 14, 5585 (2022). (Impact factor = 2.941)

8. 20. “Hydrophilic graphene quantum dots as turn-off fluorescent nanoprobes for toxic heavy metal ions detection in aqueous media” T. Anusuya, Veeresh Kumar and Vivek Kumar*, Chemosphere 282, 131019 (2021). (Impact factor = 8.943)

9. 19. “Porous graphene network from graphene oxide: Facile self-assembly and temperature dependent structural evolution” Anusuya T, Prakash J, Devesh K. Pathak, Kapil Saxena, Rajesh Kumar and Vivek Kumar*, Materials Today Communications 26, 101930 (2021). (Impact factor = 3.662

10. 18. “Back surface field approach and ITO/top electrode based structural optimization of high efficient silicon solar cell” Navraj Poudel, T Anusuya, Kapil Saxena, Rajesh Kumar and Vivek Kumar,* Advances in Materials and Processing Technologies (Taylor & Francis) 5, 338 (2019).

11. 17. “Optimizing Photovoltaic Charge Generation of Hybrid Heterojunction Core−Shell Silicon Nanowire Arrays: An FDTD Analysis” Vivek Kumar,* Deepak Gupta and Rajesh Kumar, ACS Omega 3, 4123 (2018).

12. 16. “Spectral Anomaly in Raman Scattering from p-Type Silicon Nanowires” Priyanka Yogi, Deepika Poonia, Suryakant Mishra, Shailendra Saxena, Swarup Roy, Vivek Kumar, Pankaj R. Sagdeo and Rajesh Kumar, Journal of Physical Chemistry C 121, 5372 (2017).

13. 15. “Study of Porous Silicon Prepared Using Metal-Induced Etching (MIE): a Comparison with Laser-Induced Etching (LIE)” Shailendra K Saxena, Vivek Kumar, Hari M. Rai, Gayatri Sahu, Ravi K. Late, Kapil Saxena, A. K. Shukla, Pankaj R Sagdeo and Rajesh Kumar, Silicon 9, 483 (2017).

14. 14. “Fano Scattering: Manifestation of Acoustic Phonons at Nanoscale” Priyanka Yogi, Suryakant Mishra, Shailendra K. Saxena, Vivek Kumar* and Rajesh Kumar,* Journal of Physical Chemistry Letters 7, 5291 (2016).

15. 13. “Raman spectroscopy for study of interplay between phonon confinement and Fano effect in Silicon Nanowires” Shailendra K. Saxena, Rupnayan Borah, Vivek Kumar, Hari Mohan Rai, Ravikiran Late, V. Sathe, Pankaj R. Sagdeo and Rajesh Kumar, Journal of Raman Spectroscopy 47, 283 (2016).

16. 12. “Role of metal nanoparticles on porosification of silicon by metal induced etching (MIE)” Shailendra Saxena, P Yogi, P Yadav, S Mishra, H Pandey, Hari Mohan Rai, Vivek Kumar, Pankaj Sagdeo, and Rajesh Kumar, Superlattices and Microstructures 94, 101 (2016).

17. 11. “Interplay between Phonon Confinement and Fano Effect on Raman line shape for semiconductor nanostructures: Analytical study” Priyanka Yogi, Shailendra K. Saxena, Suryakant Mishra, Hari M. Rai, Ravikiran Late, Vivek Kumar, Bipin Joshi, Pankaj R. Sagdeo and Rajesh Kumar, Solid State Communication 230, 25 (2016).

18. 10. “Thermal deoxygenation causes Photoluminescence shift from UV to blue region in lyophilized graphene oxide” Veeresh Kumar, Vivek Kumar, G.B. Reddy and Renu Pasricha, RSC Advances 5, 74342 (2015).

19. 9. “Electron Tunnelling through Single Azurin Molecules can be on/off Switched by Voltage Pulses” Chiara Baldacchini, Vivek Kumar, Anna Rita Bizzarri and Salvatore Cannistraro Applied Physics Letters 106, 183701 (2015).

20. 8. “Effect of silicon resistivity on its porosification using metal induced chemical etching: Morphology and Photoluminescence studies” Shailendra K Saxena, Gayatri Sahu, Vivek Kumar, P. K. Sahoo, Pankaj R. Sagdeo and Rajesh Kumar, Materials Research Express 2, 036501 (2015).

21. 7. “Silicon nanowires prepared by metal induced etching (MIE): Good field emitters” Vivek Kumar, Shailendra K. Saxena, Vishakha Kaushik, Kapil Saxena, A.K. Shukla and Rajesh Kumar, RSC Advances 4, 57799 (2014).

22. 6. “Raman analysis of coupling of light to vibrational states of amorphous carbon” Kapil Saxena, Vivek Kumar and A.K. Shukla, Indian Journal of Physics 88, 1099 (2014).

23. 5. “Size dependent photoluminescence in silicon nanostructures: Quantum confinement effect” Vivek Kumar, Kapil Saxena and A.K. Shukla, Micro & Nano Letters 8, 311 (2013).

24. 4. “Investigations of spatial disorder in the graphite by Raman lineshape analysis” Kapil Saxena, Vivek Kumar and A.K. Shukla, Canadian Journal of Physics 90, 975 (2012).

25. 3. “Low-frequency Raman scattering from silicon nanostructures” A.K. Shukla and Vivek Kumar, Journal of Applied Physics 110, 064317 (2011).

26. 2. “Thermal effects on electron-phonon interaction in silicon nanostructures” Rajesh Kumar, Vivek Kumar and A.K. Shukla, Silicon 2, 73 (2010).

27. 1. “Electronic Raman scattering in the Laser-etched silicon nanostructures” A.K. Shukla, Rajesh Kumar and Vivek Kumar, Journal of Applied Physics 107, 14306 (2010).

1. 3. “Nanocrystalline diamond films heavily doped by boron: structure, optical and electrical properties” V.A. Volodin, S.G. Cherkova, V. Kumar, V.A. Sachkov, V. Mortet, A.Taylor, Z. Remeš, T.H. Stuchlíková, J. Stuchlík, Proceedings of SPIE 11022, International Conference on Micro- and Nano-Electronics 2018; 110221G (2019).

2. 2. “Degradation of Luminescence Stability in Laser Etched Silicon Nanostructures” Vivek Kumar, Kapil Saxena and A.K. Shukla, AIP Conf. Proc. 1536, 195 (2013).

3. 1. “Phonon Softening of Raman Modes in graphite as a Function of Spatial Disorder” Kapil Saxena, Vivek Kumar and A.K. Shukla, AIP Conf. Proc. 1536, 367 (2013).