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      Hydrodynamic Coupling of Particle Inclusions Embedded in Curved Lipid Bilayer Membranes

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          Abstract

          We develop theory and computational methods to investigate particle inclusions embedded within curved lipid bilayer membranes. We consider the case of spherical lipid vesicles where inclusion particles are coupled through (i) intramembrane hydrodynamics, (ii) traction stresses with the external and trapped solvent fluid, and (iii) intermonolayer slip between the two leaflets of the bilayer. We investigate relative to flat membranes how the membrane curvature and topology augment hydrodynamic responses. We show how both the translational and rotational mobility of protein inclusions are effected by the membrane curvature, ratio of intramembrane viscosity to solvent viscosity, and inter-monolayer slip. For general investigations of many-particle dynamics, we also discuss how our approaches can be used to treat the collective diffusion and hydrodynamic coupling within spherical bilayers.

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          Author and article information

          Journal
          2016-01-24
          1601.06461

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          Custom metadata
          32 pages, double-column format, 15 figures
          cond-mat.soft

          Condensed matter

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