Taylor & Francis Group
Browse
tlct_a_936531_sm8514.pdf (16.5 kB)

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

Download (0 kB)
journal contribution
posted on 2014-11-02, 00:00 authored by Beomjong Kim, Yeon Jung Um, Seongun Jeon, Hirotugu Kikuchi, Sung-Kyu Hong

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.

History