Time: Auguest 16, 2014 14:00 PM
Location: Conference room No. 1, 1st Energy building
Reporter: Prof. Doo Soo Chung
Department of Chemistry, Seoul National University, Seoul 151-747, Korea
Biography:
Prof. Doo Soo Chung is the professor of Department of Chemistry, Seoul National University. He obtained his Ph. D degree from Harvard University in 1991. As postdoctoral research associate, he conducted his career in M.I.T. & Harvard Medical School from 1990 to 1994, and in Iowa State University from 1994 to 1995. Then, he moved to Seoul National University and became a full professor in 1995. Currently, he is the Associate Editor or the Editorial Board member of American Journal of Analytical Chemistry, Frontiers in Physical Chemistry and Chemical Physics and Talanta.
Abstract:
In molecule optics, a matter wave of molecules is manipulated by a molecule-optical component made of external, typically radiative, fields. The molecule-optical index of refraction, n, for a nonresonant IR laser pulse focused onto a molecular beam can be obtained from the energy conservation and wave properties of molecules. Experimentally measured values of n for benzene and nitric oxide agreed well with the calculated values. Since n depends on the properties of molecules as well as those of the laser field, a molecule prism composed of the focused nonresonant laser field can separate a multi-component molecular beam into several components according to their molecule-optical refractive indices n. We obtained a chromatographic resolution of 0.62 for the spatial separation of a mixture beam of benzene and nitric oxide using a focused Nd: YAG laser pulse as a molecule prism.
Contact: Prof. Lihua Zhang (Group 1810, 84379720)