The Study of Gas Sensors Using Excitation Surface Plasma Waves by the Method of Frustrated Total Internal Reflection

• Main Authors: Kuo-Hua Chiu, 邱國華
• Other Authors: Chen-Ming Lee
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/14848300263873457564

碩士 === 清雲科技大學 === 電子工程研究所 === 94 === The concept of this study is excitation surface plasma waves by the method of frustrated total internal reflection. Since the dielectric constants of all kinds of gases are not the same, we can discriminate from the gases which have different dielectric constants when exciting surface plasma waves. These simulations use a formula from the theories of surface plasma waves. We compared these gases in Otto configuration with Kretschmann configuration ones. And we’ll design and fabrication the experiment setup. We use a parallel light to be the light source, a rotation stage rotate systems which are Otto configuration and Kretschmann configuration, then detecting the intensity of surface plasma waves at different incident angles. We’ll also design the setups to apply in industry and public place. This study is an application of environment engineering based on electro-optical system. We hope this gas sensor can prevent accidents from toxic gases in industry in the future, and protect human’s life at home and public place.