Electrophysical Properties of an Antiferroelectric Liquid Crystal MOPB(H)PBC

Abstract

Spontaneous polarization (P _s ), rotational viscosity (η) and response time (τ) have been determined as a function of temperature at different electric fields for an antiferroelectric liquid crystal [4,4-(1-methyloctyloxycarbonyl)phenyl]-4′-[3-(butanoiloxy)prop-1-oxy]biphenyl carboxylate (MOPB(H)PBC). Spontaneous polarization, rotational viscosity and response time increase with decrease in temperature. Critical electric field (the field at which the spontaneous polarization saturates) was found to be increased with decrease in temperature.

Keywords:

• Antiferroelectric liquid crystal
• spontaneous polarization
• rotational viscosity
• response time

PACS Numbers:

• 64.70.pp
• 42.79.kr
• 77.80.e

Acknowledgments

This work was partly supported by postdoc program, Chonbuk National University (2006) and Brain Korea-21 through polymer BIN fusion research team, Chonbuk National University, Jeonju, Korea.