Volume 46, Number 2, April II 1999
|Page(s)||256 - 261|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
Casimir and mean-field interactions between membrane inclusions subject to external torques
Laboratoire de Physico-Chimie Théorique, École Supérieure de Physique et de Chimie Industrielles de
la Ville de Paris
10 rue Vauquelin, F-75231 Paris Cédex 05, France
Accepted: 27 January 1999
Inclusions embedded in fluctuating fluid membranes have been shown to experience membrane mediated forces decaying as . Modeling the inclusions as local constraints on the membrane curvature tensor, we show that the presence of external torques (mechanical or field-induced) strongly enhances and increases the range of the interactions. Repulsive mean-field contributions and attractive fluctuation (Casimir) contributions of range or longer are found, which may combine to yield equilibrium distances.
PACS: 87.16.-b – Subcellular structure and processes / 34.20.-b – Interatomic and intermolecular potentials and forces, potential energy for collisions
© EDP Sciences, 1999
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