Propagation of periodic director and flow patterns in a cholesteric liquid crystal under electroconvection.

ABSTRACT: The electroconvection of liquid crystals is a typical example of a dissipative structure generated by complicated interactions between three factors: convective flow, structural deformation, and the migration of charge carriers. In this study, we found that the periodic structural deformation of a cholesteric liquid crystal propagates in space, like a wave, under an alternating-current electric field. The existence of convection and charge carriers was confirmed by flow-field measurements and dielectric relaxation spectroscopy. Given that the wave phenomenon results from electroconvection, we suggest a possible model for describing the mechanism of wave generation. The validity of the model was examined using the Onsager variational principle. Consequently, it was suggested that wave gener

SUBMITTER: Yoshioka J 

PROVIDER: S-EPMC11457521 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature