Formation of binary phase gratings in photopolymer-liquid crystal composites by a surface-controlled anisotropic phase separation

Jae Hong Park, Iam Choon Khoo, Chang Jae Yu, Min Sik Jung, Sin Doo Lee

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We report on formation of binary phase gratings in photopolymer-liquid crystal (PLC) composites using a surface-controlled phase separation method. The binary nature of the PLC phase gratings is produced by employing a single step photo-ablation through an amplitude photomask which precisely controls the interfacial interactions between the LC and the photopolymer on the alignment layer. A subsequent illumination of the ultraviolet light onto the whole PLC promotes an anisotropic phase separation resulting in the formation of distinct binary patterns for the PLC structure. The electrically tunable diffraction properties of the binary phase gratings are presented.

Original languageEnglish (US)
Article number021906
Pages (from-to)021906-1-021906-3
JournalApplied Physics Letters
Volume86
Issue number2
DOIs
StatePublished - Jan 10 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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