Loading...
|
Please use this identifier to cite or link to this item:
https://ir.lib.ncu.edu.tw/handle/987654321/103663
|
| Title: | Isomerization-induced phase separation of a mixture of monomer, azobenzene, and liquid crystals |
| Authors: | 鄭恪亭;Fuh, Andy Ying-Guey;Liu, Yen-Chen;Cheng, Ko-Ting;Liu, Cheng-Kai;Chen, Yuan-Di |
| Contributors: | 理學院光電科學與工程學系 |
| Keywords: | Azobenzene;Illumination;Liquid Crystal;PHASE SEPARATION;Scattering |
| Date: | 2014-01-01 |
| Issue Date: | 2026-04-23 11:34:50 (UTC+8) |
| Publisher: | American Scientific Publishers |
| Abstract: | 摘要： We propose a novel phase separation method, referred to as isomerization-induced phase separation (IIPS), applicable to a mixture comprising monomers, nematic liquid crystal (LC), and azobenzene LC (azo-LC). The resulting structures, termed as monomer-dispersed gel LCs (MDGLCs), can be formed by both dark IIPS and bright IIPS, which indicates that IIPS occurs without and with light irradiation, respectively. The MDGLC structures in a cell are reconstructed, indicating that the IIPS is a repeatable phase separation process. A cell filled with the mixture initially exhibits a scattering mode and can be switched to multi-stable transparent states after UV irradiation. The switchability is due to the isothermal phase transition resulting from trans- to cis-isomerization processes. An application of the IIPS on an optically controllable scattering mode light shutter, having the advantages of multi-stability, optically switchability, polarizer-free, with high contrast ratio, and other properties, is experimentally demonstrated. Conversely, the transparent mode of MDGLCs can be switched back to the scattering mode by green-light illumination to achieve bright IIPS, or by thermal treatment. Grayscales (multi-stable states) can also be elicited by UV illumination under various durations. The selectively unpolymerized monomer and azo-LC in this system are the keys to achieve high-performance multi-stable scattering MDGLCs.
出版者： American Scientific Publishers
出版日期： 2014-01-01
出處： Science of advanced materials, 2014-01, Vol.6 (1), p.37-43
識別號： ISSN: 1947-2935
識別號： DOI: 10.1166/sam.2014.1678 |
| Appears in Collections: | [Department of Optics and Photonics] journal & Dissertation
|
Files in This Item:
| File |
Description |
Size | Format | |
|---|
| index.html | | 0Kb | HTML | 13 | View/Open |
|
All items in NCUIR are protected by copyright, with all rights reserved.
|
