Electro-optical properties of liquid crystal-polymer composite films

• Main Authors: Wu, Jian-Hung, 吳建宏
• Other Authors: Jeng, Shie-Chang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/36218516807557972991

碩士 === 國立交通大學 === 影像與生醫光電研究所 === 101 === We investigated the electro-optical properties of liquid crystal-polymer (LC-polymer) composite films with the polymer concentration in the range of 3 wt% to 80 wt%. The morphology of the polymer composite films was studied by using the polarized optical microscope and the scanning electron microscope. A variety of morphologies ranging from macro-phase separation, polymer-dispersed LC droplets, single-phase nematic spherulites, isolated spherulites, to amorphous structure was observed depending upon the polymer concentration in LC-polymer composite films and irradiation temperature. The voltage-dependent transmittance, phase retardation, and hysteresis effect of LC-polymer composite films were also measured in this work. The electro-optical properties of LC-polymer composite films were strongly depending on the morphologies.