Photoaligning and Photopatterning: New LC Technology

Author:

Chigrinov VladimirORCID,Sun Jiatong,Wang Xiaoqian

Abstract

We demonstrate a physical model of photoalignment and photopatterning based on rotational diffusion in solid azo-dye nanolayers. We also highlight the new applications of photoalignment and photopatterning in display and photonics such as: (i) liquid crystal (LC) E-paper devices, including optically rewritable LC E-paper on flexible substrates as 3D E-paper, as well as optically rewritable technology for photonics devices; (ii) photonics LC devices, such as LC Switches, polarization controllers and polarization rotators, variable optical attenuators, LC filled photonic crystal fiber, switchable diffraction grating; (iii) patterned micro-polarizer array using photo-alignment technology for image sensor; (iv) electrically tunable liquid crystal q-plates; (v) electrically switchable liquid crystal Fresnel lens; (vi) liquid crystal optical elements with integrated Pancharatnam-Berry phases. We are sure, that in the field of (LC), the main point is no longer display research, but new photonic applications of LC are emerging in telecommunication, fiber optical communication systems, sensors, switchable lenses, LC light converters and other LC photonics devices.

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

Reference38 articles.

1. Photoalignment of Liquid Crystalline Materials: Physics and Applications;Chigrinov,2008

2. Chigrinov and Hoi-Sing Kwok, Photoalignment of liquid crystals: Applications to fast response ferroelectric liquid crystals and rewritable photonic devices;Vladimir,2013

3. Optical rewritable liquid-crystal-alignment technology

4. Light Printing of Grayscale Pixel Images on Optical Rewritable Electronic Paper

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