Fabrication of azimuthally/radially symmetric liquid crystal plates using two-step photoalignments

Cheng Kai Liu, Shao Hao Liao, Chi Tang Huang, Ko Ting Cheng

Research output: Contribution to journalArticlepeer-review

Abstract

Fabrication of azimuthally/radially symmetric liquid crystal plates (A/RSLCPs) using two-step photoalignments with the two dichroic dyes methyl red (MR) and brilliant yellow (BY) is demonstrated. BY molecules coated onto a substrate and MR molecules doped in LCs in a cell can azimuthally and radially align LCs by illuminating radially and azimuthally symmetric polarized light with specific wavelengths, respectively. In contrast to the previous fabrication methods, the fabrication method proposed here can prevent the contamination/damage of photoalignment films on substrates. A method to improve the proposed fabrication to avoid generating undesirable patterns is also elucidated.

Original languageEnglish
Pages (from-to)21962-21971
Number of pages10
JournalOptics Express
Volume31
Issue number13
DOIs
StatePublished - 19 Jun 2023

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