Control of liquid crystal pretilt angles by using organic/inorganic hybrid interpenetrating networks

Dowon Ahn; Yong Cheol Jeong; Seungwoo Lee; Jihye Lee; Yongjoon Heo; Jung Ki Park

doi:10.1364/OE.17.016603

Control of liquid crystal pretilt angles by using organic/inorganic hybrid interpenetrating networks

Dowon Ahn, Yong Cheol Jeong, Seungwoo Lee, Jihye Lee, Yongjoon Heo, Jung Ki Park

KU-KIST Graduate School of Converging Science and Technology

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

28 Citations (Scopus)

Abstract

A new photoalignment method of controlling the pretilt angle of liquid crystals (LCs) by using organic/inorganic hybrid interpenetrating polymer networks (IPNs) is proposed and demonstrated. In the hybrid IPN alignment layer system, the competition between polyvinyl cinnamate) (PVCi) favoring planar alignment and poly(dimethyl siloxane) (PDMS) favoring vertical alignment made it possible to achieve pretilt angle in a wide range from 0° to 90°, and adjust pretilt angle as a function of PDMS content. In addition, we achieved the high azimuthal anchoring energy at the intermediate pretilt angle by using PDMS as the vertical-aligning component.

Original language	English
Pages (from-to)	16603-16612
Number of pages	10
Journal	Optics Express
Volume	17
Issue number	19
DOIs	https://doi.org/10.1364/OE.17.016603
Publication status	Published - 2009 Sept 14

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "A new photoalignment method of controlling the pretilt angle of liquid crystals (LCs) by using organic/inorganic hybrid interpenetrating polymer networks (IPNs) is proposed and demonstrated. In the hybrid IPN alignment layer system, the competition between polyvinyl cinnamate) (PVCi) favoring planar alignment and poly(dimethyl siloxane) (PDMS) favoring vertical alignment made it possible to achieve pretilt angle in a wide range from 0° to 90°, and adjust pretilt angle as a function of PDMS content. In addition, we achieved the high azimuthal anchoring energy at the intermediate pretilt angle by using PDMS as the vertical-aligning component.",

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AU - Lee, Jihye

AU - Heo, Yongjoon

AU - Park, Jung Ki

PY - 2009/9/14

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AB - A new photoalignment method of controlling the pretilt angle of liquid crystals (LCs) by using organic/inorganic hybrid interpenetrating polymer networks (IPNs) is proposed and demonstrated. In the hybrid IPN alignment layer system, the competition between polyvinyl cinnamate) (PVCi) favoring planar alignment and poly(dimethyl siloxane) (PDMS) favoring vertical alignment made it possible to achieve pretilt angle in a wide range from 0° to 90°, and adjust pretilt angle as a function of PDMS content. In addition, we achieved the high azimuthal anchoring energy at the intermediate pretilt angle by using PDMS as the vertical-aligning component.

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Control of liquid crystal pretilt angles by using organic/inorganic hybrid interpenetrating networks

Abstract

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