P-142: Improvement of PDLC Performance by Changing Surface Anchoring Strength

2011 ◽  
Vol 42 (1) ◽  
pp. 1641-1644 ◽  
Author(s):  
Yue Cui ◽  
Rafael S. Zola ◽  
Young-Cheol Yang ◽  
Deng-Ke Yang
Keyword(s):  
Surface Anchoring ◽  
Anchoring Strength ◽  
Surface Anchoring Strength

Unified surface anchoring strength from the splay elastic deformation in nematic slabs

2008 ◽  
Vol 516 (9) ◽  
pp. 2682-2685
Author(s):  
Akihiko Sugimura ◽  
Sadao Takayama ◽  
Heo Keun ◽  
Hitoshi Ohgaki
Keyword(s):  
Elastic Deformation ◽  
Surface Anchoring ◽  
Anchoring Strength ◽  
Surface Anchoring Strength

scholarly journals Surface anchoring controls orientation of a microswimmer in nematic liquid crystal

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Hai Chi ◽  
Mykhailo Potomkin ◽  
Lei Zhang ◽  
Leonid Berlyand ◽  
Igor S. Aranson
Keyword(s):  
Liquid Crystal ◽  
Critical Case ◽  
Topological Defects ◽  
Water Soluble ◽  
Critical Surface ◽  
Bacteria Transport ◽  
Surface Anchoring ◽  
Swimming Direction ◽  
Anchoring Strength ◽  
Surface Anchoring Strength

Abstract Microscopic swimmers, both living and synthetic, often dwell in anisotropic viscoelastic environments. The most representative realization of such an environment is water-soluble liquid crystals. Here, we study how the local orientation order of liquid crystal affects the motion of a prototypical elliptical microswimmer. In the framework of well-validated Beris-Edwards model, we show that the microswimmer’s shape and its surface anchoring strength affect the swimming direction and can lead to reorientation transition. Furthermore, there exists a critical surface anchoring strength for non-spherical bacteria-like microswimmers, such that swimming occurs perpendicular in a sub-critical case and parallel in super-critical case. Finally, we demonstrate that for large propulsion speeds active microswimmers generate topological defects in the bulk of the liquid crystal. We show that the location of these defects elucidates how a microswimmer chooses its swimming direction. Our results can guide experimental works on control of bacteria transport in complex anisotropic environments.

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