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Open AccessArticle

Lateral Dynamics in Polymer-Supported Membranes

Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Tokyo 192-0397, Japan
Polymer Physics Group, Department of Physics, Free University of Brussels, Campus Plaine, CP 223, Brussels 1050, Belgium
National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8565, Japan
Author to whom correspondence should be addressed.
Materials 2012, 5(10), 1923-1932;
Received: 11 September 2012 / Revised: 30 September 2012 / Accepted: 12 October 2012 / Published: 19 October 2012
(This article belongs to the Special Issue Supported Lipid Membranes)
We investigate the lateral dynamics in a purely viscous lipid membrane which is supported by a thin polymer sheet (polymer-supported membrane). The generalized frequency-dependent mobility tensor of the polymer-supported membrane is obtained by taking into account the viscoelasticity of the polymer sheet. Due to its viscoelasticity, the cross-correlation functions of two particles embedded in the membrane exhibit an anomalous diffusion. A useful relation for two-point microrheology connecting the cross-correlation function and the modulus of the polymer sheet is provided. View Full-Text
Keywords: supported membranes; lipids; viscoelasticity; diffusion; microrheology supported membranes; lipids; viscoelasticity; diffusion; microrheology
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Komura, S.; Ramachandran, S.; Seki, K. Lateral Dynamics in Polymer-Supported Membranes. Materials 2012, 5, 1923-1932.

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