Bulk chirality effect for symmetric bistable switching of liquid crystals on topologically self-patterned degenerate anchoring surface

Min Kyu Park; Kyung Il Joo; Hak Rin Kim

doi:10.1364/OE.25.014427

Bulk chirality effect for symmetric bistable switching of liquid crystals on topologically self-patterned degenerate anchoring surface

Min Kyu Park, Kyung Il Joo, Hak Rin Kim

Kyungpook National University

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

Abstract

We demonstrate a bistable switching liquid crystal (LC) mode utilizing a topologically self-structured dual-groove surface for degenerated easy axes of LC anchoring. In our study, the effect of the bulk elastic distortion of the LC directors on the bistable anchoring surface is theoretically analyzed for balanced bistable states based on a free energy diagram. By adjusting bulk LC chirality, we developed ideally symmetric and stable bistable anchoring and switching properties, which can be driven by a low in-plane pulsed field of about 0.7 V/μm. The fabricated device has a contrast ratio of 196:1.

Original language	English
Pages (from-to)	14427-14443
Number of pages	17
Journal	Optics Express
Volume	25
Issue number	13
DOIs	https://doi.org/10.1364/OE.25.014427
State	Published - 26 Jun 2017

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title = "Bulk chirality effect for symmetric bistable switching of liquid crystals on topologically self-patterned degenerate anchoring surface",

abstract = "We demonstrate a bistable switching liquid crystal (LC) mode utilizing a topologically self-structured dual-groove surface for degenerated easy axes of LC anchoring. In our study, the effect of the bulk elastic distortion of the LC directors on the bistable anchoring surface is theoretically analyzed for balanced bistable states based on a free energy diagram. By adjusting bulk LC chirality, we developed ideally symmetric and stable bistable anchoring and switching properties, which can be driven by a low in-plane pulsed field of about 0.7 V/μm. The fabricated device has a contrast ratio of 196:1.",

author = "Park, {Min Kyu} and Joo, {Kyung Il} and Kim, {Hak Rin}",

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Y1 - 2017/6/26

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AB - We demonstrate a bistable switching liquid crystal (LC) mode utilizing a topologically self-structured dual-groove surface for degenerated easy axes of LC anchoring. In our study, the effect of the bulk elastic distortion of the LC directors on the bistable anchoring surface is theoretically analyzed for balanced bistable states based on a free energy diagram. By adjusting bulk LC chirality, we developed ideally symmetric and stable bistable anchoring and switching properties, which can be driven by a low in-plane pulsed field of about 0.7 V/μm. The fabricated device has a contrast ratio of 196:1.

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ER -

Bulk chirality effect for symmetric bistable switching of liquid crystals on topologically self-patterned degenerate anchoring surface

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