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技術學刊 EIScopus
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| 篇名 | 高分子分散液晶摻雜二氧化鈦之型態及光電特性之研究 |
|---|---|
| 卷期 | 26:3 |
| 並列篇名 | ELECTRO-OPTICAL PROPERTIES AND MORPHOLOGY OF POLYMER DISPERSED LIQUID CRYSTALS DOPED WITH SUBMICRON PARTICLES OF TITANIUM DIOXIDE |
| 作者 | 吳政哲 、 詹玉女 、 梁浩熏 、 李俊毅 |
| 頁次 | 187-191 |
| 關鍵字 | 高分子分散液晶 、 二氧化鈦 、 孔洞尺寸 、 polymer dispersed liquid crystals 、 titanium dioxide 、 droplet size 、 EI 、 Scopus 、 TSCI |
| 出刊日期 | 201109 |
中文摘要
本研究探討高分子分散液晶摻雜二氧化鈦對型態學及光電性質之影響，我們將次微米大小等級的二氧化鈦以0.1wt%及0.5wt%兩種濃度與高分子分散液晶做摻雜後將均勻的材料灌入於16μm的試片中以紫外光聚合的方法製得高分子分散液晶薄膜，經實驗結果發現摻雜二氧化鈦之驅動電壓由40.1V下降至33.9V，可降低約15%，又液晶微滴大小由2.15μm增加至2.53μm，驅動電壓下降之結果與高分子分散液晶中液晶液滴尺寸變化不謀而合，故藉由摻雜低濃度之二氧化鈦可改善日前高分子分散液晶驅動電壓較高之問題。
英文摘要
After establishing the effects of doping submicron particles of titanium
dioxide (SMP-TiO2) on nematic liquid crystals (NLC), we studied the
impact of low-concentration SMP-TiO2 doping on the morphology and
electro-optical properties of polymer dispersed liquid crystals (PDLCs).
We made use of the photopolymerization induced phase separation (PIPS)
process to obtain 16 μm thick pure PDLC, PDLC + 0.1 wt% TiO2, and PDLC + 0.5 wt% TiO2 PDLC films. Our results indicate that increasing doping concentrations of SMP-TiO2 decreased the driving voltage of the PDLC by 15%, from 40.1 V to 33.9 V. This result was consistent with morphology observations of the PDLC, where the LC droplet size was found to increase from 2.15 μm to 2.53 μm. This study pinpoints the possibility of resolving the issue of high driving voltage for PDLCs, by changing the LC droplet morphology with low doping concentrations of SMP-TiO2.