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Translational friction of a particle inside a vesicle studied by an extended shell method
Author(s) -
Allison Stuart A.
Publication year - 1988
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360270108
Subject(s) - prolate spheroid , spheres , ellipsoid , vesicle , chemistry , particle (ecology) , shell (structure) , bead , suspension (topology) , constant (computer programming) , diffusion , mechanics , work (physics) , classical mechanics , thermodynamics , composite material , physics , materials science , membrane , biochemistry , oceanography , mathematics , homotopy , computer science , pure mathematics , astronomy , programming language , geology
The translational friction of a particle inside a rigid hollow sphere is determined in this work. This should be important in model studies of solute diffusion in cells or vesicles. An extended shell algorithm is developed and used in which the cell or vesicle is modeled as a large number of beads. In the extended algorithm, the shell is divided into groups of beads and the assumption is made that the force exerted by each bead on the solvent is constant within a group. The algorithm is tested by using it to determine the translational friction constants of spheres and prolate ellipsoids modeled as shells of beads.