Dr. B. Karthikeyan is currently working as an Associate Professor at Annamalai University, India. His research interests are in the area of nanomaterials and vibrational spectroscopy.Dr. George Gnanakumar is currently heading the physical chemistry unit at Madurai Kamaraj University, India. His research interests are in the area of clean energy using nanomaterials.Dr. A. Therasa Alphonsa is currently an Assistant Professor at GAC ,Mutlur, India. Her research interests are in molecular docking and repurposing of nano-metal oxide materials.