Blue phase liquid crystal phase transition for cyano compound chiral nematic liquid crystal mixtures with three two-ring core structures and chiral dopant concentrations

Jaesun Shin, Beomjong Kim, Wansu Jung, Mateen Fahad, Sang Jin Park, Sung Kyu Hong

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Blue phase (BP) temperature range of a chiral nematic liquid crystal (LC) mixture is dependent upon the host nematic LC chemical structure and chiral dopant concentration. In this study, we investigated BP phase transition behaviour and helical twisting power (HTP) using three chiral dopant concentrations of cyano compound chiral nematic LC mixtures incorporating three two-ring core structures in the host nematic LCs. The effect of the host nematic LC core structure, HTP and chiral dopant concentrations were considered on BP temperature ranges, for two types of complete BPI and BPII without isotropic phase (Iso) and two types of coexistence state of BPI+Iso and BPII+Iso.

Original languageEnglish
Pages (from-to)524-533
Number of pages10
JournalPhase Transitions
Volume90
Issue number5
DOIs
StatePublished - 4 May 2017

Keywords

  • blue phase
  • chiral dopant concentration
  • Chiral nematic liquid crystal
  • core structure
  • helical twisting power
  • temperature range

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