The Daily Bulletin Archive

Please join the Chemistry and Physics departments for the seminar "Research in My Lab: Microfluidics for Cell Physiology to Aggregated Gold Nanoparticles for Near-IR SERS Substrates," presented by Jinseok Heo, associate professor of chemistry at Buffalo State, on Thursday, September 28, at 12:30 p.m. in Science and Mathematics Complex 169. All students, faculty, and staff are welcome. This seminar is partially funded by the Faculty-Student Association.

Abstract
In this talk I will present a summary of research carried out in my lab for the past few years. My lab has been interested in the development of new tools to investigate cellular responses to osmotic stimuli. We also have an interest in advancing an analytical method applicable to forensic chemistry using gold nanoparticles. The first part of my talk will describe the fabrication of single cell microwell array based on photocrosslinkable hydrogel and discuss the results of its application for studying cell volume regulation, a regulatory cellular response to an osmotic shock, at the single cell level. In the second part of my talk. I will cover our recent discovery on the use of aggregated gold nanoparticles (AuNPs) as substrates for surface enhanced Raman scattering (SERS) in near-IR region. These AuNP aggregates formed by a quick-freezing method using liquid nitrogen exhibited a red-shifted plasmon band. The underlying mechanism of freezing-induced aggregation of AuNPs and the potential applications of these AuNP aggregates will be discussed.