Liquid crystal alignment and switching in porous chiral thin films

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

doi:10.1002/(SICI)1521-4095(200003)12:5<371::AID-ADMA371>3.0.CO;2-P

Liquid crystal alignment and switching in porous chiral thin films

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

Research output: Contribution to journal › Article › Academic › peer-review

32 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	371-373
Number of pages	3
Journal	Advanced Materials
Volume	12
Issue number	5
DOIs	https://doi.org/10.1002/(SICI)1521-4095(200003)12:5<371::AID-ADMA371>3.0.CO;2-P
Publication status	Published - 1 Jan 2000
Externally published	Yes

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10.1002/(SICI)1521-4095(200003)12:5<371::AID-ADMA371>3.0.CO;2-P

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AU - Brett, Michael J.

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N2 - 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.

AB - 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.

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SN - 0935-9648

VL - 12

SP - 371

EP - 373

JO - Advanced Materials

JF - Advanced Materials

IS - 5

ER -

Liquid crystal alignment and switching in porous chiral thin films

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