2026-11-092026-11-09https://scholars.csmu.edu.tw/handle/123456789/38703We study the absorption spectrum and the photoluminescence based on nanoparticles doped in nematic liquid crystals. And we study the emitting spectrum of nano-particles, the emitting spectrum of surface plasmon induced by metal nano-particles such as silver or gold could be observed by the microscope and analyzed by monochromator. This project consists of two parts: The first part: Studies of photoluminescence based on nanoparticles/liquid crystals (1) Studies of the photoluminescence based on nanoparticles doped in nematic liquid crystals. (2) Studies of the photoluminescence by doping different kinds of nanoparticles in nematic liquid crystals. (3) Studies of the photoluminescence of nematic liquid crystals doped with various concentrations of silver nanoparticles. (4) Studies of the absorption of nematic liquid crystals doped with various concentrations of silver nanoparticles. (5) Studies of the photoluminescence by changing the polarization of excited beam respect to the director of liquid crystals. The second part: Studies of the emitting spectrum of nano-particles (1) Studies of the photoluminescence based on nanoparticles in PI surface. (2) Studies of the photoluminescence by using different kinds of nanoparticles in PI surface. (3) Studies of the emitting spectrum of nanoparticles in PI surface. (4) Studies of the emitting spectrum of single nanoparticle by changing the external voltage. (5) Studies of the emitting spectrum by changing the temperature of liquid crystals. " This is a two-year project. We will primarily focus on the first part in the first year, and second part in the second year.奈米科技與液晶結合是一個相當有趣的物理研究課題。本計畫擬定將奈米粒子加入於 液晶當中、奈米粒子嵌在PI配向膜上及金屬薄膜退火後所形成的奈米結構與液晶接觸的 樣品，藉由外加電壓、溫度、粒徑、奈米材料的改變，觀察其吸收光譜、螢光光譜及表 面電漿效應的變化。 本計畫為兩年期計畫，第一年進行第一部分，第二年進行第二部分工作。 第一部分：奈米粒子加入液晶的光譜研究 (1)探討奈米銀粒子的濃度改變，對吸收光譜及螢光光譜的影響。 (2)改變奈米銀粒子的粒徑，以釐清奈米粒子表面積增加對光譜所造成的影響。 (3)改變奈米材料的種類，擬定用奈米金粒子與奈米碳管掺雜於液晶中觀察其螢光光譜 與。 (4)改變激發光源偏振與液晶導軸的相對方位，觀察光致螢光強度的變化，以釐清液晶 。 (5)探討液晶相變點附近之光譜變化。 第二部分：奈米粒子崁在PI配向膜上或由金屬薄膜退火後形成之奈米結構與液晶接觸 的光譜研究 (1)比較奈米銀粒子崁在PI配向膜上及銀膜退火後形成的奈米結構與奈米粒子直接加 入液晶樣品的吸收光譜及螢光光譜差異。 (2)改變外加電壓，觀察螢光光譜及吸收光譜的變化。 (3)以白光光源作為激發光源，改變外加電壓，以顯微鏡觀察奈米銀粒子的光譜變化及 表面電漿效應。 (4)改變外加電壓，觀察單一奈米銀粒子的光譜變化。 (5)改變樣品溫度觀察奈米粒子的光譜變化。Project