Effect of monomer concentration and functionality on electro-optical properties of polymer-stabilised optically isotropic liquid crystals. Issue 5 (9th April 2018)

• Record Type: Journal Article
• Authors: Manda, Ramesh; Pagidi, Srinivas; Kim, MinSu; Park, Chul Ho; Yoo, Hye Sun; Sandeep, Kaur; Lim, Young Jin; Lee, Seung Hee
• Is Part Of: Liquid crystals. Volume 45:Issue 5(2018)
• Page Start: 736
• Page End: 745
• Publication Date: 2018-04-09
• Subjects: Liquid crystals -- optically isotropic -- polymerisation-induced phase separation -- in-plane field -- Kerr effect; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2017.1380239
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: Optically isotropic nature can open a new type of high-performance liquid crystal (LC) displays. The main features emerge from the interaction between LC and polymer network at the interface. At this point, we investigated the influence of cross-linking monomer concentration and functionality on electro-optic properties of optically isotropic liquid crystal (OILC) obtained by polymerisation-induced phase separation method. Interestingly, we obtained a pore-like network structure constructed by highly interlinked polymer beads in acrylate monomers and achieved fast decay response time (0.6 ms). We found that the voltage-dependent hysteresis was mostly eliminated (~0.25%), and the contrast ratio was enhanced (1:1550) for high functional monomers. The result inspires a simple way to optimise the materials to fabricate a high-performance OILC device and it shows high-transparency, low-driving voltage, hysteresis-free and sub-millisecond response time. Graphical Abstract: