Photogeneration of high pretilt angles of nematic liquid crystals by azobenzene-containing polymer films

Seiichi Furumi, Masaru Nakagawa, Shin'ya Morino, Kunihiro Ichimura, Hidehiko Ogasawara

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

A vertically aligned (VA) type of nematic liquid-crystal (LC) cell was explored using photoirradiated thin films of a polymethacrylate with mesogenic moieties of 4-trifluoromethoxyazobenzene as side chains. Optical anisotropy was generated by slantwise irradiation of films of the polymer with nonpolarized ultraviolet light, followed by annealing treatment to enhance the photodichroism which displayed thermal stability. The photoirradiated films brought about high pretilt angles of the LC so that a VA-type LC cell was fabricated. The cell exhibited electro-optical properties with excellent optical quality on applying voltages even after heating at 100°C for several hours.

Original languageEnglish
Pages (from-to)2438-2440
Number of pages3
JournalApplied Physics Letters
Volume74
Issue number17
DOIs
Publication statusPublished - 1999 Apr 26
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Photogeneration of high pretilt angles of nematic liquid crystals by azobenzene-containing polymer films'. Together they form a unique fingerprint.

  • Cite this