Laser-addressing rewritable optical information storage of (liquid crystalline side chain copolymer/liquid crystals/photo-responsive molecule) ternary composite systems

Hirokazu Yamane, Hirotsugu Kikuchi, Tisato Kajiyama

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A laser-addressing rewritable optical information storage for (liquid crystalline side chain copolymer: LCcoP/low molecular weight nematic liquid crystals: nematic LCs/photo-responsive molecule: PM) ternary composite systems in a smectic state was investigated on the basis of a reversible and bistable electro-optical switching driven by ac electric fields with two different frequencies. In order to improve the response speed for the electro-optical switching for the ternary composite system, a LCcoP with the mesogenic side chain fraction of 52.5 mol% was synthesized. The ternary composite system with the LCcoP fraction of 36 wt% showed a smectic state over a wide range near room temperature. High speed reversible and bistable electro-optical switching (approx. 100 ms) under an appropriate electric field, and a stable memory effect (approx. y) were demonstrated upon irradiation of UV light of 355 nm by using a YAG laser for the ternary composite systems in a smectic phase at room temperature.

Original languageEnglish
Pages (from-to)4777-4785
Number of pages9
Journalpolymer
Volume40
Issue number17
DOIs
Publication statusPublished - Aug 1999

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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