Influence of bilayer fluctuations on the steric interactions between polymer-grafted bilayers
作者:
Kalina Hristova,
David Needham,
期刊:
Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 18,
issue 3
页码: 423-430
ISSN:0267-8292
年代: 1995
DOI:10.1080/02678299508036641
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We propose a mechanism, through which the low membrane bending rigidity changes the steric polymer repulsion between polymer-grafted bilayers. We calculate the energy of a polymer chain trapped between two thermally undulating surfaces. The proposed treatment is in terms of de Gennes' theory of fluctuations in liquid crystals, later developed by Helfrich for membranes. We show that the confinement energy of the polymer increases due to membrane fluctuations. Also, the repulsive forces between soft polymer-grafted bilayers can extend further from the surface than the height of the polymer layer.
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