Optimization of Holographic Polymer-Dispersed Liquid Crystals Using Siloxane-containing Materials

• CHO, Yeong Hee

• KIM, Nam

• KAWAKAMI, Yusuke

抄録

Optimization of performance of holographic gratings was investigated by changing the chemical structures of photopolymerizable monomers, the LC content, and recording beam intensity, which strongly related to the control of kinetics of polymerization and phase separation of LCs. High diffraction efficiency was obtained using 3-acryloxypropyltrimethoxysilane (APTMS) and 2-[(3,4-epoxycyclohexyl)ethyl]trimethoxysilane (ECTMS) as siloxane-containing reactive diluent by inducing a fast and good phase separation originated from the incompatible and flexible properties of siloxane chain even at a very low LC concentration (10~25wt%), in contrast to the case using diluent without siloxane component,like N-vinylpyrrolidinone. The phase-separated morphologies of gratings, such as spacing and surface topology, were observed by atomic force microscopy (AFM). Very regular and smooth morphologies were observed for the formed holographic gratings with APTMS and various amounts of LC.

identifier:https://dspace.jaist.ac.jp/dspace/handle/10119/4961

収録刊行物

• Proceedings of SPIE

  Proceedings of SPIE 5636 475-482, 2005-02

  International Society for Optical Engineering (SPIE)

キーワード

• Holographic polymer dispersed liquid crystal
• phase separation
• diffraction efficiency
• siloxane-containing epoxides
• ring-opening polymerization
• volume shrinkage

詳細情報

• CRID: 1050001337537202432
• NII論文ID: 120000861732
• Web Site: http://hdl.handle.net/10119/4961
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles