Switching mechanism in polar columnar mesophases made of bent-core molecules
Abstract
The behavior of polar columnar phases made of bent shaped molecules (B1Rev and B1RevTilted) was studied under applied electric field. There are two competing mechanisms of switching in polar B1RevTilted columnar phase: the collective rotation around the long molecular axis and the collective rotation around the tilt cone. Respectively monostable and bistable optical switching is observed for antiferroelectric B1RevTilted phase. The main factor discriminating the type of the switching is a width of the column cross-section.
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