Enlargement of blue-phase stability for rod-like low-molecular-weight chiral nematic liquid crystal mixtures

Beomjong Kim, Yeon Jung Um, Seongun Jeon, Hirotugu Kikuchi, Sung Kyu Hong

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this study, we investigated the enlargement of liquid crystal (LC) blue-phase (BP) temperature range using the rod-like low-molecular-weight cyano phenyl-type chiral nematic LC with various core group and chiral dopant concentrations. Also, the electro-optic response time was investigated for them. We found that the BP temperature range was strongly dependent upon the core structure and the chiral dopant concentration for the chiral nematic LC mixtures having the same terminal group. Also, we found a stable BP with a wide temperature range (more than 6 K), including a BP-isotropic coexistence state over 13.5 K upon heating and cooling processes and very fast response time (less than 1 ms), by using the cyano phenyl-type chiral nematic LC mixture with a high molecular aspect ratio and a high chiral dopant concentration.

Original languageEnglish
Pages (from-to)1619-1626
Number of pages8
JournalLiquid Crystals
Volume41
Issue number11
DOIs
Publication statusPublished - Nov 2 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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