Enhancement of flexoelectric ratio of nematic liquid crystal by doping calamitic ferroelectric liquid crystal

ABSTRACT

We measured the flexoelectric ratio e* of a nematic liquid crystal (NLC) doped with a calamitic ferroelectric liquid crystal (FLC). We doped two kinds of commercial FLC into the pure NLC at a weight concentration of 5 wt%. The absolute value of the flexoelectric ratio was increased up to 49% compared to the pure NLC. The greater transverse dipole moment and the elastic constant of FLC are thought to be related to the increase of the flexoelectric ratio.

Graphical Abstract

KEYWORDS:

• Flexoelectric effect
• flexoelectric ratio
• ferroelectric liquid crystal
• chiral flexoelectro-optic method

Acknowledgments

The authors thank JNC Corporation for the liquid crystals and useful discussions.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research was supported by Ministry of Trade, Industry, and Economy (MOTIE) and Korea Display Research Consortium (10051334), and National Research Foundation (NRF, 2016R1A2B4010361).