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Crystals 2017, 7(6), 182; doi:10.3390/cryst7060182

Switchable Two-Dimensional Liquid Crystal Grating in Blue Phase

1
Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
2
Department of Optometry, Chung Shan Medical University, Taichung 40201, Taiwan
*
Author to whom correspondence should be addressed.
Received: 11 May 2017 / Revised: 18 June 2017 / Accepted: 19 June 2017 / Published: 21 June 2017
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Abstract

We demonstrate a switchable two-dimensional phase grating in blue phase liquid crystal (BPLC), which is fabricated by sawtooth in-plane-switch (IPS) electrodes. They are used to generate the horizontal electric field on a single indium-tin-oxide (ITO) glass substrate and, as a result, the 1-D and 2-D phase gratings can be mutual switched via different polarizations of incident light with an applied voltage. The first-order diffraction efficiency is up to 20% and 10% for the 1-D and 2-D phase grating at V = 150 V, respectively. Moreover, the rise and decay time is 0.9 and 1.1 ms, respectively, which is suitable for wide applications of high-speed optical manipulations. View Full-Text
Keywords: in-plane-switch sawtooth electrode; blue phase liquid crystal in-plane-switch sawtooth electrode; blue phase liquid crystal
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Huang, B.-Y.; Lin, S.-H.; Lin, K.-C.; Kuo, C.-T. Switchable Two-Dimensional Liquid Crystal Grating in Blue Phase. Crystals 2017, 7, 182.

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