Interests: Thin Films; Electrochromics; Transparent Conducting Oxides; Energy Conservative Materials and Devices
1. Engineering Physics
2. Electromagnetic Theory
 K. Uday Kumar, Dhanya S Murali and A Subrahmanyam, Flexible electrochromics: magnetron sputtered tungsten oxide (WO3−x ) thin films on Lexan (optically transparent polycarbonate) substrates, J. Phys. D: Appl. Phys. 48, 255101 (2015).
 Deepak Kumar Kaushik, K. Uday Kumar, A Subrahmanyam, Electrical transport in disordered tin doped indium oxide (ITO) thin films: Quantum correction to the conductivity, AIP Advances 7, 015109 (2017).
 K. Uday Kumar S D Bhat and A Subrahmanyam; Electrochromic device with Magnetron sputtered Tungsten oxide (WO3) and nafion membrane: performance with varying tungsten oxide thickness- a report, Mater. Res. Express. 6, 045513, (2019).
 K. Uday Kumar and A Subrahmanyam; Electrochromic properties of tungsten oxide (WO3) thin films on lexan (polycarbonate) substrates prepared with neon as sputter gas, Mater. Res. Express, 6, 065502, (2019)
 K. Uday Kumar and A Subrahmanyam, Electrochromic properties of reactive magnetron sputtered WO3 thin films prepared with neon as sputter gas. J.Nanosci. Nanotechnol. 20, 3724–3733 (2020).
 B M Pratima, Uday Kumar K and A Subrahmanyam, Silver surface tarnish protection with Sol-gel prepared TiO2+SiO2 coatings. AIP Conference Proceedings (2020), Accepted for publication.
 K. Uday Kumar, Deepak Kumar Kaushik, KM Karuppasamy and A Subrahmanyam; High efficiency Magnetron sputtered tungsten oxide thin film electrochromics with Neon sputtering, 59th Annual Technical Conference Proceedings, Society of Vacuum Coaters Indianapolis, USA, May 9–13 (2016).
 K Uday Kumar, D.S. Murali, M.K. Jain, and A. Subrahmanyam; Studies on Tungsten Oxide (WO3) Based Electrochromics on Lexan (Flexible) Substrates Prepared by Reactive DC Magnetron Sputtering; 57th Annual Technical Conference Proceedings, Chicago, IL May 3–8, (2014).
1. Synthesis, Properties, and Applications of Transition Metal OxideNanomaterials, R. Rakesh Kumar, K. Uday Kumar, and D. Haranath, Book Chapter -CRC Press (ISBN:9780367275471), June 2020. (Pawade, V. (Ed.), Salame, P. (Ed.), Bhanvase, B. (Ed.). (2021). Multifunctional Nanostructured Metal Oxides for Energy Harvesting and Storage Devices. Boca Raton: CRC Press, https://doi.org/10.1201/9780429296871)