Related Experiment Video
Updated: Aug 30, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
Light scattering investigation above the nematic-smectic-A phase transition in binary mixtures of calamitic and
Mohammad Reza Dodge1, Rolfe G Petschek, Charles Rosenblatt
1Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, USA.
Abstract:
Quasielastic light scattering measurements were performed in the nematic phase of mixtures consisting of the calamitic mesogen 8OCB doped with small concentrations of the bent-core molecule P-7PIMB. It was found that the regular part of the bend elastic constant decreases strongly with dopant concentration X. Close to the nematic-smectic-A phase transition temperature, the divergent part of the bend elastic constant, which is proportional to the bare correlation length xi(0)(||) parallel to the layer normal, also decreases rapidly with X. The effect of the dopant on xi(0)(||) is examined in brief theoretically.
Related Concept Videos
Phase Transitions: Melting and Freezing
Phase Diagrams of Ternary Systems
Fluid Mosaic Model
Fluid Mosaic Model
Phase Transitions: Vaporization and Condensation
States of Matter and Phase Changes

