Bending of charged flexible membranes due to the presence of macroions |
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Authors: | H Schiessel |
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Institution: | (1) Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5130, USA, US |
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Abstract: | We investigate the bending of flexible charged membranes due to the presence of rigid rodlike macroions in the framework of
the Debye-Hückel approximation. When the macroions are fixed in space at some distance from the bilayer the membrane bends
towards them; we calculate the exact deformation profile. On the other hand a macroion which is adsorbed on the membrane causes
a deflection of the bilayer. Finally, we consider swollen lamellar polyanion/charged-lipid complexes where the macroions are
intercalated between charged lipid bilayers. We predict the occurrence of a double adsorption (pinching effect) of the macroion
for sufficiently flexible membranes.
Received: 9 February 1998 / Revised: 9 June 1998 / Accepted: 2 July 1998 |
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Keywords: | PACS 68 10 -m Fluid surfaces and fluid-fluid interfaces - 64 70 Md Transitions in liquid crystals - 82 70 Kj Emulsions and suspensions |
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