Photo-switchable chiral liquid crystal with optical tristability enabled by a photoresponsive azo-chiral dopant

Yu Cheng Hsiao, Kuan Chung Huang, Wei Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A light-driven tristable chiral-tilted homeotropic nematic (TCHN) cell is demonstrated. The liquid-crystal cell is photo-switchable among the three stable states: the tilted-homeotropic, fingerprint, and the tilted-twist states. The inclusion of a photosensitive chiral bis(azobenzene) compound into a typical nematic liquid crystal makes the resulting material possible to switch from one to another stable state directly and reversibly owing to the photoinduced trans-cis isomerization of the azo-chiral dopant and, hence, the configurational change of the liquid crystal via the guest-host effect. By further introducing dichroic dyes into the TCHN system, we devised a polarizer-free display and light modulators. The novel TCHN composite material opens up new possible applications in light-driven optical elements and devices.

Original languageEnglish
Pages (from-to)2687-2693
Number of pages7
JournalOptics Express
Volume25
Issue number3
DOIs
Publication statusPublished - Feb 6 2017
Externally publishedYes

Fingerprint

liquid crystals
light modulators
polarizers
cells
isomerization
modulators
switches
dyes
inclusions
composite materials

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Photo-switchable chiral liquid crystal with optical tristability enabled by a photoresponsive azo-chiral dopant. / Hsiao, Yu Cheng; Huang, Kuan Chung; Lee, Wei.

In: Optics Express, Vol. 25, No. 3, 06.02.2017, p. 2687-2693.

Research output: Contribution to journalArticle

@article{e27f1b8a2a9f41c08db99c7bfeef708a,
title = "Photo-switchable chiral liquid crystal with optical tristability enabled by a photoresponsive azo-chiral dopant",
abstract = "A light-driven tristable chiral-tilted homeotropic nematic (TCHN) cell is demonstrated. The liquid-crystal cell is photo-switchable among the three stable states: the tilted-homeotropic, fingerprint, and the tilted-twist states. The inclusion of a photosensitive chiral bis(azobenzene) compound into a typical nematic liquid crystal makes the resulting material possible to switch from one to another stable state directly and reversibly owing to the photoinduced trans-cis isomerization of the azo-chiral dopant and, hence, the configurational change of the liquid crystal via the guest-host effect. By further introducing dichroic dyes into the TCHN system, we devised a polarizer-free display and light modulators. The novel TCHN composite material opens up new possible applications in light-driven optical elements and devices.",
author = "Hsiao, {Yu Cheng} and Huang, {Kuan Chung} and Wei Lee",
year = "2017",
month = "2",
day = "6",
doi = "10.1364/OE.25.002687",
language = "English",
volume = "25",
pages = "2687--2693",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "3",

}

TY - JOUR

T1 - Photo-switchable chiral liquid crystal with optical tristability enabled by a photoresponsive azo-chiral dopant

AU - Hsiao, Yu Cheng

AU - Huang, Kuan Chung

AU - Lee, Wei

PY - 2017/2/6

Y1 - 2017/2/6

N2 - A light-driven tristable chiral-tilted homeotropic nematic (TCHN) cell is demonstrated. The liquid-crystal cell is photo-switchable among the three stable states: the tilted-homeotropic, fingerprint, and the tilted-twist states. The inclusion of a photosensitive chiral bis(azobenzene) compound into a typical nematic liquid crystal makes the resulting material possible to switch from one to another stable state directly and reversibly owing to the photoinduced trans-cis isomerization of the azo-chiral dopant and, hence, the configurational change of the liquid crystal via the guest-host effect. By further introducing dichroic dyes into the TCHN system, we devised a polarizer-free display and light modulators. The novel TCHN composite material opens up new possible applications in light-driven optical elements and devices.

AB - A light-driven tristable chiral-tilted homeotropic nematic (TCHN) cell is demonstrated. The liquid-crystal cell is photo-switchable among the three stable states: the tilted-homeotropic, fingerprint, and the tilted-twist states. The inclusion of a photosensitive chiral bis(azobenzene) compound into a typical nematic liquid crystal makes the resulting material possible to switch from one to another stable state directly and reversibly owing to the photoinduced trans-cis isomerization of the azo-chiral dopant and, hence, the configurational change of the liquid crystal via the guest-host effect. By further introducing dichroic dyes into the TCHN system, we devised a polarizer-free display and light modulators. The novel TCHN composite material opens up new possible applications in light-driven optical elements and devices.

UR - http://www.scopus.com/inward/record.url?scp=85011655323&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85011655323&partnerID=8YFLogxK

U2 - 10.1364/OE.25.002687

DO - 10.1364/OE.25.002687

M3 - Article

AN - SCOPUS:85011655323

VL - 25

SP - 2687

EP - 2693

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 3

ER -