DiscoverThe Mathematics of Liquid CrystalsColloidal Doping of Cholesterics and Blue Phases
Colloidal Doping of Cholesterics and Blue Phases

Colloidal Doping of Cholesterics and Blue Phases

Update: 2013-07-03
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At the interface between a cholesteric phase and an isotropic fluid, an array of defects arises. This creates for embedded colloidal particles a free energy landscape that depends on the ratio of colloid size to cholesteric pitch and on the strength of anchoring at the colloid-cholesteric interface. I shall outline recent experiments and simulations that probe this landscape. A somewhat similar situation arises when colloids are added to blue phases, for which the defect array is not interfacial but permeates the bulk phase. Preliminary simulations suggest a variety of structures, many metastable, with interesting transitions inducible by external fields and/or flow.
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Colloidal Doping of Cholesterics and Blue Phases

Colloidal Doping of Cholesterics and Blue Phases

Stephen Ison

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