Hysteresis-free polymer-stabilised blue phase liquid crystals comprising low surface tension monomers

Pao Ju Hsieh, Huang-Ming Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Partial replacement of fluoroacrylates in the monomer composition is able to reduce the free energy of polymer-stabilised blue phase liquid crystal (PSBPLC) due to their low surface tension. The ease of blue phase platelet texture formation is observed under fast cooling and short annealing time before ultraviolet irradiation. The peak driving voltages are dramatically decreased from 9% to 16% in the resulting PSBPLCs. In addition, the hysteresis is completely suppressed in the PSBPLC containing 3FM-M1. The other PSBPLC containing fluoroacrylates retain very small hysteresis (△V < 0.8 V) regardless the fluorine atom numbers. In comparison with current PSBPLCs, the fluoroacrylates serve as mesophase enhancer not only to promote the blue phase formation but also to improve the electro-optical properties.

Original languageEnglish
Pages (from-to)216-221
Number of pages6
JournalLiquid Crystals
Volume42
Issue number2
DOIs
StatePublished - 1 Feb 2015

Keywords

  • blue phase liquid crystal
  • hysteresis-free
  • low surface energy

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