Fluctuation dynamics of spherical vesicles: frustration of regular bulk dissipation into subdiffusive relaxation
Laura R Arriaga1, Iván López-Montero, Guillermo Orts-Gil
1Mechanics of Biological Membranes and Biorheology, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Abstract:
Spherical lipid vesicles obtained by the extrusion method are nonequilibrium membrane structures more curved than the zero spontaneous curvature equilibrium state of the bilayer. Furthermore, these structures are quite rigid as compared to spontaneous vesicles or microemulsion droplets made of soluble surfactants. The dynamical description of the shape fluctuations derived by Milner and Safran (MS) [Phys. Rev. A 36, 4371 (1987)], which is based on the elastic Helfrich energy referred to the equilibrium state, could be misleading in these cases. In the present contribution, shape fluctuations of unilamellar palmitoyl-oleyl-phosphocholine (POPC) vesicles (radius Rh
More Related Videos
10:02Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
Published on: May 27, 2021
10:08Phase Behavior of Charged Vesicles Under Symmetric and Asymmetric Solution Conditions Monitored with Fluorescence Microscopy
Published on: October 24, 2017
Related Concept Videos
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
Stokes' Law
The expression for the force on a solid spherical object in a fluid is called Stokes' law. Stokes' law is valid only for low Reynolds...
Euler's Equations of Motion
Excess Pressure Inside a Drop and a Bubble
Laminar and Turbulent Flow
Navier–Stokes Equations
