Symmetry breaking in soft matter: from self-assembled vesicles to motile cells

28 Mar 2012, 10:30
45m
132:028 (Nordita)

132:028

Nordita

Speaker

Dr Oksana Manyuhina (Nordita, Stockholm)

Description

Soft matter essentially differs from hard matter and thus the approaches to study it are also different. Since the typical energy scale between the components of soft matter system is of the order of k_BT, the fluctuating and curved geometries are energetically accessible, and the language of differential geometry becomes useful. When we consider soft materials with characteristic length scale of the order of microns (thousands of molecules) the phenomenology turns out to be an adequate tool to describe the collective behaviour of the system. In this talk I will consider two examples: shape transformation of self-assembled spherical vesicles in presence of magnetic fields and spontaneous crawling of keratocyte cells. Our theoretical findings give insight into recent experimental observations.

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