Flow-induced states in channel-confined nematics

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• Simon Copar (University of Ljubljana )
• Thursday 16 May 2019, 14:10-14:50
• Seminar Room 1, Newton Institute.

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DNMW03 - Optimal design of soft matter - including a celebration of Women in Materials Science (WMS)

Anisotropy of liquid crystals couples their orientational order to velocity shear, and consequently, induces different regimes in flows with different strengths. A flow-aligning nematic liquid crystal, confined to a channel with homeotropic surface alignment, is known to undergo a transition from a homeotropic to a flow-aligned state. I will present a more detailed view of this behaviour, including a hidden pre-transitional state with broken chiral symmetry and dynamics of flow-aligned domain under uniform or alternating flow. Additionally, I will present a Landau model that captures the stability of different states with respect to material parameters.

This talk is part of the Isaac Newton Institute Seminar Series series.

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