Mahendra Rai is a Senior Professor and UGC-Basic Science Research Faculty Fellow at the Department of Biotechnology, Sant Gadge Baba Amravati University at Amravati, Maharashtra, India. He was a Visiting Scientist at the Department of Bioenergetics, University of Geneva, Switzerland at the Department of Plant Protection of Debrecen University, Debrecen, Hungary. He visited Department of Chemical Biology, University of Campinas, Brazil under Indo-Brazil Research Programme (DST-CNPq collaboration). He was visiting Professor in Nicolaus Copernicus University, Torun, Poland. and visiting scientist in State University of Campinas, Brazil. He was also visiting professor in Ostrava, Czech Republic and in National University of Rosario, Argentina. His area of expertise includes microbial biotechnology and nanobiotechnology. His present research interest include application of nanobiotechnology in medicine with particular reference to development of nanoantimicrobials. He has published more than 400 research papers in national and international journals. In addition, he has edited/authored more than 50 books and 6 patents.