Dr. O Singh is a recipient of DST and CSIR projects as an independent researcher and a Senior Scientist at IIT Madras. He has 189 research publications with national and international journals. He has maintained an H-index of 20. He is a world-wide collaborator and is one of the best well wishers and motivators in the STEM fields. His research activities are in hydrogen production, solar photovoltaics, polymer sciences, nanotechnology, CCUS, MFCs, high pressure gases, water treatment and biomaterial composites.