Volume 68, Number 4, November 2004
|Page(s)||596 - 602|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||27 October 2004|
The soft-mode instability of a membrane induced by strong polymer adsorption
Department of Physics, Pohang University of Science and Technology Pohang 790-784, S. Korea
2 Asia Pacific Center for Theoretical Physics - Pohang 790-784, S. Korea
Corresponding author: firstname.lastname@example.org
Accepted: 29 September 2004
The interaction between a flexible polymer and a fluctuating membrane is a fundamental problem in soft-matter physics with relevance to biological phenomena occurring in cells. We find that polymer fluctuations in a strongly adsorbed state can renormalize the bending rigidity of a planar membrane to a negative value. It gives rise to a novel phenomenon that the membrane with a small surface tension can be unstable to spontaneous formation of a soft mode, i.e., a large-amplitude undulation with the wavelength comparable to the interaction range which can be long.
PACS: 87.16.Dg – Membranes, bilayers, and vesicles / 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling
© EDP Sciences, 2004
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