Dr. V. Hariharan is an Assistant Professor & Head of the Department of Physics, Mahendra Arts & Science College, Salem, since 2009. Dr. V. Hariharan completed his Ph.D degree at Bharathiar University, Coimbatore and his Post Graduate studies at Periyar University, Tamilnadu, India. His research interests lie in the area of metal oxide based semiconducting nanomaterials for Smart windows, Sensor and Superconducting applications. Dr. Hariharan published more than 30 research articles in reputed international journals. He is actively collaborating with researchers in several other disciplines including Chemistry and Bio Technology. He also is collaborating with Alagappa University, Periyar University, Indian Institute of Science, SRM University and Indian Institute of Science on various problems on nanotechnology. He also collaborating with International Organisations likes Pusan National University, South Korea and Aalto University, Finland. Dr. V. Hariharan has served more than 20 conference and workshop program committees. He currently serves on the Optical Society of India.