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The Effect of Shear Flow on the Helfrich Interaction in Lyotropic Lamellar Systems | Simon W. Marlow
; Peter D. Olmsted
; | Date: |
8 Aug 2002 | Journal: | European Physical Journal E 8 (2002) 485-497. | Subject: | Soft Condensed Matter | cond-mat.soft | Abstract: | We study the effect of shear flow on the entropic Helfrich interaction in lyotropic surfactant smectic fluids. Arguing that flow induces an effective anisotropic surface tension in bilayers due to a combination of intermonolayer friction, bilayer collisions and convection, we calculate the reduction in fluctuations and hence the renormalised change in effective compression modulus and steady-state layer spacing. We demonstrate that non-permeable or slowly permeating membranes can be susceptible to a undulatory instability of the Helfrich-Hurault type, and speculate that such an instability could be one source of a transition to multilamellar vesicles. | Source: | arXiv, cond-mat/0208174 | Services: | Forum | Review | PDF | Favorites |
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