Liquid crystal alignment and switching in porous chiral thin films

Jeremy C. Sit, Dirk J. Broer, Michael J. Brett

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)


A new type of hybrid optical material was produced from porous chiral thin films embedded with liquid crystalline (LC) material in the pores. The films were deposited using the glancing angle technique (GLAD) and have tailorable microstructures. Helical films were shown to induce chiral alignment in nematic LCs which do not form chiral phases on their own, resulting in enhanced chiral optic response over that of the GLAD film alone. Reversible electrooptic switching of the LC component of these devices is demonstrated, wherein the chiral optic response vanishes with application of an electric field.

Original languageEnglish
Pages (from-to)371-373
Number of pages3
JournalAdvanced Materials
Issue number5
Publication statusPublished - 1 Jan 2000
Externally publishedYes


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