Ratnesh TiwariDr. Ratnesh Tiwari received his Ph.D. from RDVV University Jabalpur. He is currently working as Associate Professor and Head, Department of Physics Bhilai Institute of Technology Raipur. He has published more than 45 papers in International & Nationa Journals and edited 5 books. He is a reviewer for various international journals and serves as associate editor and editor-on-chief on several International journals. He is presently editing a special issue for IGI global and Bentham publication house. He has served as NSS coordinator, asst. exam controller, judge in competitions, session chair in conferences, and convener and organizing secretary in National and International conferences. Read More Read Less