Phase Modulator Plate Based on Liquid Crystals Doped with Silica Nanoparticles

• Main Authors: Wei-Hao Chou, 周韋豪
• Other Authors: Hui-Chi Lin
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/mg85rg

碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 101 === In this paper, we fabricated multi-stable phase modulator based on hybrid-aligned nematic liquid crystals doped with silica nanoparticles. Experimentally, the silica nanoparticles accumulate on the homogenously aligned side of the substrate by applying an external DC or low frequency AC voltage, creating agglomerates to stabilize the homeotropic orientated liquid crystals. Therefore, we can control the phase of the sample by modulating the magnitude and frequency of the voltage. The phase retardation range of the LC plate is ~2π.