Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method

Hak Moo Lee; Hyung Koo Chung; Hong Gyu Park; Dae Shik Seo

doi:10.1364/OME.5.000044

Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method

Hak Moo Lee, Hyung Koo Chung, Hong Gyu Park, Dae Shik Seo

Department of Electrical and Electronic Engineering

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

Abstract

We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.

Original language	English
Pages (from-to)	44-50
Number of pages	7
Journal	Optical Materials Express
Volume	5
Issue number	1
DOIs	https://doi.org/10.1364/OME.5.000044
Publication status	Published - 2015

Bibliographical note

Publisher Copyright:
© 2014 Optical Society of America.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

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10.1364/OME.5.000044

Cite this

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abstract = "We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.",

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AB - We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.

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Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method

Abstract

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