Fast switchable field-induced optical birefringence in highly transparent polymerliquid crystal composite

Young Jin Lim, Jeong Hwan Yoon, Hyesun Yoo, Seong Min Song, Ramesh Manda, Srinivas Pagidi, Myong Hoon Lee, Jaemin Myoung, Seung Hee Lee

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A liquid crystal device with optically isotropic liquid crystal (OILC) phase induced from polymerization-induced phase separation exhibit a fast response time and a proper dark state. Its electro-optic performances are highly influenced by a kind of materials and processing conditions. Here, the effect of materials and phase-separation on the electro-optic performance of OILC device has been investigated by utilizing the acrylate and the thiol-ene monomer mixtures. The optically isotropic phase was analyzed with scattering theory, and it was revealed that a novel polymer network structure of acrylate mixture is free of scattering and yields a higher on-state transmittance, enhanced by ~50%. By tuning the monomer ratio and UV intensity, an excellent transparent film was obtained and, in addition, the response time was improved by ~40%. The excellent black state and its flexibility can be applied to flexible liquid crystal photonic and display devices.

Original languageEnglish
Pages (from-to)3698-3707
Number of pages10
JournalOptical Materials Express
Issue number12
Publication statusPublished - 2018

Bibliographical note

Funding Information:
Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1A6A3A11930056 and 2016R1D1A1B01007189).

Publisher Copyright:
© 2018 Optical Society of America.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials


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