Polymer-stabilized reflective fingerprint cholesteric texture grating

Chi Huang Lin, Andy Ying Guey Fuh, Tin Shan Mo, Chi Yen Huang

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


This study describes a reflective grating. It is fabricated using a simple process consisting of thermal annealing followed by UV irradiation through a grating photomask. The sample is made from a mixture of cholesteric liquid crystal and prepolymer materials. A cholesteric liquid crystal has a planar texture, which changes under an applied external field, thus forming the electrically switchable reflective grating. The multistability of the grating can be achieved by applying various voltage pulses; the memory effect of the grating's gray-scale persists for two months. The high switching contrast ratio and fast response of the grating are also discussed.

Original languageEnglish
Pages (from-to)7441-7446
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number12
Publication statusPublished - 2002 Dec 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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