講者：林宗宏教授 (清華大學醫工所) 演講題目：Functional Nanogenerators for Self-Powered Sensing Systems 演講時間：11/27(五) 15:30~17:20 演講地點：博雅館 201 主持人：謝之真教授 ABSTRACT Self-powered nanosensors that can function without external power sources have recently been demonstrated as new approaches for pressure, pH, humidity, and temperature sensing. By harvesting energy directly from the environment to power biomedical devices, these self-powered sensors and systems are advantageous in minimizing the size, having long-term operation (little maintenance), and avoiding the use of environmentally unfriendly materials in battery. Since the first invention of triboelectric nanogenerator (TENG) in 2012, it has been developed into a new energy technology. TENG has been applied to efficiently convert the mechanical vibration into electricity. The fundamental mechanism of the TENG is based on surface charge transfer, which is through the contact between two materials with different triboelectric polarity. The serial contact and separation of the material surfaces with opposite charges establishes a potential difference, which will drive the electrons flow through the external load. Because the capability of surface charge transfer depends on the physical and chemical properties of the surfaces, in this research we further functionalize the material surface for selective detection of light, mercury ion, and catechin molecule. The self-powered nanosensors developed here are future sensing system for unreachable and access-denied extreme environments.
BIOGRAPHY
Zong-Hong Lin received his B.S. (2003) and M.S. (2005) in Department of Chemistry from the National Chung Cheng University. He completed his Ph.D. (2009) from the National Taiwan University, also in Department of Chemistry. After one year in the army (2009-2010), he started his postdoctoral career at the National Taiwan University between 2010 and 2012. Then he joined Georgia Institute of Technology as a postdoctoral fellow between 2012 and 2014. Currently he is an Assistant Professor in Institute of Biomedical Engineering, National Tsing Hua University. Dr. Lin's research focuses on design of smart nanogenerators with high outputs, development of self-powered nanosensors and nanosystems, detection of biomolecules through surface-enhanced Raman spectroscopy, and preparation of functional nanomaterials for electrochemical and antibacterial applications. He has published over 65 papers (h-index 28) and served on the program and organizing committees of various international workshops and conferences.