Photoinduced two-dimensional gratings based on dye-doped cholesteric liquid crystal films

Hui Chen Yeh, Guang Hao Chen, Chia Rong Lee, Ting Shan Mo

研究成果: Article同行評審

20 引文 斯高帕斯(Scopus)

摘要

This work elucidates photoinduced two-dimensional (2D) gratings in dye-doped cholesteric liquid crystal films. The helical pitch is increased by green-beam-induced trans-cis isomerization and a concomitant thermal effect. Two-dimensional gratings appear when the green beam is turned off. Grating formation results from elastic instability caused by restored strain arising from helical pitch reduction. Grating lifetime increases as green beam intensity increases and declines under irradiation with a strong red beam. Variation in grating spacing with green intensity with various pitches is also examined.

原文English
文章編號141105
期刊Journal of Chemical Physics
127
發行號14
DOIs
出版狀態Published - 2007 十月 18

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

指紋 深入研究「Photoinduced two-dimensional gratings based on dye-doped cholesteric liquid crystal films」主題。共同形成了獨特的指紋。

引用此