Dr. Ajay Kumar did his Ph. D. jointly, from Department of Physics and Astrophysics, University of Delhi, and National Physical Laboratory, New Delhi, in 2012. His research interest is based on the dielectric, electro-optical, memory effect of nano-composites of thermotropic liquid crystals. He has published more than 40 research papers in highly reputed journals and presented his research work in many National and International conferences. His research papers has more than 1250 citations and having h-index 20. He has more than 10 years of teaching experience.