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Flow-assisted self-healing of the helical structure in a cholesteric liquid crystal
journal contribution
posted on 2022-08-04, 08:17 authored by Jan-Christoph Eichler, Robert A. Skutnik, Marco MazzaMarco Mazza, Martin SchoenWe employ nonequilibrium molecular dynamics simulations to investigate the structure and dynamics of a cholesteric liquid crystal confined
between atomically corrugated solid walls. By choosing walls normal to the helical axis, we can study systems with an arbitrary cholesteric
pitch without exposing the cholesteric helix to a spurious stress. We investigate the effects of local heating and flow and their joint effects.
A steady-state laminar Poiseuille flow is initiated by means of an external body force. Flow alone (i.e., without local heating) in a direction
normal to the helical axis does not affect the cholesteric pitch. If the liquid crystal is heated in a small region, the cholesteric helix becomes
unstable and melts locally. However, if local heating and flow are combined, a nontrivial synergistic effect is observed in that the helical
structure recuperates the better, the higher the speed of the flow is.
Funding
Institut für Chemie at Technische Universität Berlin
History
School
- Science
Department
- Mathematical Sciences
Published in
The Journal of Chemical PhysicsVolume
155Publisher
AIPVersion
- VoR (Version of Record)
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© AIP PublishingPublisher statement
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Eichler, J-C. ... et al., 2021. Flow-assisted self-healing of the helical structure in a cholesteric liquid crystal. The Journal of Chemical Physics, 155: 054903 and may be found at https://doi.org/10.1063/5.0058745Acceptance date
2021-07-22Publication date
2021-08-04Copyright date
2021ISSN
0021-9606eISSN
1089-7690Publisher version
Language
- en
Depositor
Dr Marco Mazza. Deposit date: 4 August 2021Article number
054903Usage metrics
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