Periodical Texture at Polarization Reversal of Ferroelectric Liquid Crystal

Abstract

Periodical texture at polarization reversal in thick cell of ferroelectric liquid crystal has been studied. This stripe texture is tilted to the smectic layer and the tilt direction depends on polarity of applied voltage. A peak of polarity reversal current and a dip of transmitted light intensity are observed under the polarity reversal of applied voltage. The current peak is shorter than the dip of transmitted light intensity. The reversed polarization amount between the current peak is more than 90% of total reversed polarization amount. This result supports that the origin of the periodical texture is stripelike array of 2π walls.