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Deformable bodies in anisotropic fluids

Presented by: 
Saverio Spagnolie University of Wisconsin-Madison
Date: 
Wednesday 20th September 2017 - 12:10 to 12:50
Venue: 
INI Seminar Room 1
Abstract: 
Liquid crystals (LCs) are anisotropic, viscoelastic fluids that can be used to direct colloids into organized assemblies with unusual optical, mechanical, and electrical properties. In past studies, the colloids have been sufficiently rigid that their individual shapes and properties have not been strongly coupled to elastic stresses imposed by the LCs. We will discuss how soft colloids (micrometer-sized shells) behave in LCs. We reveal a sharing of strain between the LC and shells, resulting in formation of spindle-like shells and other complex shapes. These results hint at previously unidentified designs of reconfigurable soft materials with applications in sensing and biology. Also to be discussed: related efforts relevant to biolocomotion and an immersed boundary method for computing fluid-structure interactions in a nematic liquid crystal.
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons