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Article overview
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Charge-, salt- and flexoelectricity-driven anchoring control in nematics | | Jeffrey C. Everts
; Miha Ravnik
; | | Date: |
5 Mar 2020 | | Abstract: | We show that the design of electric double layers and flexoelectricity can be
used to tune the surface anchoring in general nematic fluids. Specifically, we
demonstrate for a nematic electrolyte that the surface anchoring strength can
be efficiently controlled by the surface charge, bulk ion concentration and/or
flexoelectricity, effectively changing not only the magnitude of the anchoring
but also the anchoring type, such as from planar to tilted. This tuning is
driven by the competing energetic-torque couplings between nematic director and
the emergent electrostatic potential, due to surface charge, ions and
flexoelectricity. Our findings propose a novel way of influencing surface
anchoring by using electrostatic effects, which could be used in various
aspects, including in the self-assembly of colloidal particles in nematic
fluids, optical and display patterns, and sensing. | | Source: | arXiv, 2003.2914 | | Services: | Forum | Review | PDF | Favorites | |
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