Kinetics of motile solitons in nematic liquid crystals

Satoshi Aya () and Fumito Araoka ()
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Satoshi Aya: South China University of Technology
Fumito Araoka: RIKEN Center for Emergent Matter Science (CEMS)

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract The generation of spatially localized, soliton-like hydrodynamic disturbances in microscale fluidic systems is an intriguing challenge. Herein, we introduce nonequilibrium solitons in nematic liquid crystals stimulated by an electric field. These dynamic solitons are robust as long as the electric field is maintained. Interestingly, their kinetic behaviours depend on the field condition—Tuning of the amplitude and frequency of the applied electric field alters the solitons to self-assemble into lattice ordering like physical particles or to command them to various dynamic states. Our key property to the realisation is the electrohydrodynamic instability due to the coupling between the fluid elasticity and the background convection. This paper describes a new mechanism for realising dynamic solitons in fluid systems on the basis of the electrohydrodynamic phenomena.

Date: 2020
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DOI: 10.1038/s41467-020-16864-8

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