| Issue |
Europhys. Lett.
Volume 60, Number 4, November 2002
|
|
|---|---|---|
| Page(s) | 594 - 600 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00260-6 | |
| Published online | 01 November 2002 | |
Elasticity of polymer-anchored membranes
Department of Physics, The University of Memphis -
Memphis, TN 38152-6670, USA
Corresponding author: mlaradji@memphis.edu
Received:
15
February
2002
Accepted:
12
September
2002
The renormalization of the elastic constants of a
polymer-anchored membrane is investigated by means of systematic
Monte Carlo simulations. Our results indicate that when polymers
are grafted on both sides, and are in the brush regime, the excess
bending rigidity scales as 
(N and σ
being the number of statistical segments and grafting density,
respectively) with 
. When the membrane is grafted
on one side only, the induced excess bending modulus depends on
the bare membrane bending modulus, 
, and approaches a
value of 
. These results are largely in agreement
with the self-consistent field theory and scaling arguments using
the blob picture.
PACS: 68.47.Pe – Langmuir-Blodgett films on solids, polymers on surfaces, biological molecules on surfaces / 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling / 87.16.Dg – Membranes, bilayers, and vesicles
© EDP Sciences, 2002
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