Wednesday, 11 September 15h30, MSG-025 Bernal Institute
Growth of Some Novel Single Crystals from Aqueous Solutions for Optoelectronic Applications
Crystallization of single crystals has developed as an important field over many years, both for basic research and industrial applications in many scientific disciplines. The rapid development of optical communication systems has led to a demand for nonlinear optical materials for high performance in electronics, optoelectronics devices. Single crystals play an important role in the development of microelectronics, optoelectronics and fast electronic applications. Nonlinear optical materials will be the key elements for future photonic technologies based on the fact that photons are capable of processing information with the speed of light. Inorganic materials are much more matured in their NLO applications. Most commercial materials are inorganic especially, for high power use. The advent of high intensity lasers coupled with the recent advances in crystal technology has led to rapid progress in the field of nonlinear optics. The growth of crystal from solutions is the most widespread method of crystal growing and is very popular in growing several technologically important crystals. From a technological point of view, some important single crystals have been grown in a laboratory from low temperature solution growth technique. During this presentation, the growth mechanism, nucleation kinetics, origin of nonlinearities and the effect of impurities on the habit modification of some NLO crystals viz. KDP, ADP, KDP-ADP mixed, KAP, KCl, AO, Urea, Thiourea, TGS, L-alanine, and other single crystals like MgSO4, ZnSO4, K2SO4, in pure and doped with transition metals and their structural, mechanical and optical properties will be discussed. Work carried out in Professor Podder’s laboratory in the area of crystal growth will also be outlined.
ABOUT THE PRESENTER
Jiban Podder is Professor of Physics at Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh where he has been teaching since 1989. He received his B.Sc. (Honours) and M.Sc. in Physics from Dhaka University in 1980 and 1981 respectively. He received his M.Phil in 1987 and PhD in Physics in 1995 from BUET under the research collaboration of Anna University, India. He joined the Bangladesh Atomic Energy Commission as a Scientific Officer in 1987. He pursued postdoctoral research at Anna University, India, during 2000-2001 and Nagoya Institute of Technology, Japan under a JSPS fellowship during 2003-2005. Professor Podder served the Department of Chemical and Biological Engineering, University of Saskatchewan, Canada as Visiting Professor from 2012 to 2015. His research interests include growth kinetics, non-linear optical crystals, compound semiconductor thin films, nano-materials, carbon and carbonaceous materials for optoelectronic and photonic applications.
To date, Professor Podder has supervised 20 MSc, 30 M. Phil. and 6 PhD students. He has evaluated over 120 PhD theses from different Universities around the world. As of 2018, he has published over 140 research articles in refereed journals & proceedings and is author of ‘Applied Engineering Physics: Electricity and Magnetism’ for Science and Engineering students. He is a Fellow of the Bangladesh Physical Society (BPS), Life Member of the Bangladesh Association for Advancement of Science (BAAS), Life Member of the Indian Association for Crystal Growth and Life Member of the Bangladesh Association of Scientists and Scientific Professions. He has served on many international/national conferences and workshop program committees and is actively involved with the Bangladesh Physical Society (BPS) since 1991. He has served as secretary of the Bangladesh Physical Society during 2009-2011, Joint Secretary during 2005-2007, 1999-2001. He currently serves as Vice President of BPS.