Determination of Polar Anchoring Strength for Polymer-Stabilized Blue Phase Liquid Crystal Device

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Published 22 August 2011 • Copyright (c) 2011 The Japan Society of Applied Physics
, , Citation Jais Bin Lias et al 2011 Jpn. J. Appl. Phys. 50 081607 DOI 10.1143/JJAP.50.081607

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Author affiliations

1 Department of Electrical Engineering, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan

2 Department of Electronic Engineering, Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia

3 Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

Dates

  1. Received 26 April 2011
  2. Accepted 11 May 2011
  3. Published

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Abstract

Quantitative evaluation of a coupling coefficient between the blue phase (BP) liquid crystal (LC) and the diacrylate-type polymer, which is to be either the framework or the defect line of the polymer-stabilized (PS) BPLC, is an important subject. As a coupling coefficient, the polar anchoring strength Wd between the BPLC and the diacrylate-type polymer prepared inside a thin hybrid alignment nematic (HAN) cell was evaluated by means of oblique incidence transmission spectroscopic ellipsometry. As an example, the polar anchoring strength Wd = 1.87 ×10-4 J/m2 is measured at the interface between host BPLC material with the diacrylate-type polymer performing vertical alignment (VA).

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10.1143/JJAP.50.081607