报告内容摘要

Human eyes can distinguish about 10 million different colors but only 100 different grey scales Therefore, in bioassays or biosensors, a readout system that is based on different colors rather than different light intensities provides tremendous advantages. Liquid crystals (LCs) are materials known to give many different colors depending on their average orientations. Recently, it was discovered that the orientations assumed by LCs near surfaces are very sensitive to surface topography, chemical functionality and molecules adsorbed on surfaces. Therefore, LCs can be used to amplify molecular binding events into colorful LC signals which are readily visible to the naked eye. This phenomenon has led to the development of a new class of LC sensors with unprecedented sensitivity and convenience. In this presentation, I will discuss my research in LC and a variety of LC-based chemical and biological sensors which have broad applications in environmental monitoring, clinical diagnosis and defense.

报告人简介

Dr Yang Kun-Lin (楊昆霖) is an associate professor in the Department of Chemical and Biomolecular Engineering at the National University of Singapore (NUS). Before joining NUS, he was a post-doctoral researcher in the Chemical and Biomolecular Department at the University of Wisconsin - Madison. He received his PhD degree from Georgia Institute of Technology in 2002. He is the recipient of Defense Innovation Research Program Award in 2009, A*Star Research Awards in 2006, 2008 and 2015 for his work on microfluidic – liquid crystal sensors. His present research interests are focused on analytical chemistry, microfluidics, sensors and liquid crystals.

Department of Chemical and Biomolecular Engineering

National University of Singapore (NUS),

E-mail: cheyk@nus.edu.sg