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Fluctuation-induced forces between inclusions in a fluid membrane under tension.

Authors :
Lin HK
Zandi R
Mohideen U
Pryadko LP
Source :
Physical review letters [Phys Rev Lett] 2011 Nov 25; Vol. 107 (22), pp. 228104. Date of Electronic Publication: 2011 Nov 23.
Publication Year :
2011

Abstract

We develop an exact method to calculate thermal Casimir forces between inclusions of arbitrary shapes and separation, embedded in a fluid membrane whose fluctuations are governed by the combined action of surface tension, bending modulus, and Gaussian rigidity. Each object's shape and mechanical properties enter only through a characteristic matrix, a static analog of the scattering matrix. We calculate the Casimir interaction between two elastic disks embedded in a membrane. In particular, we find that at short separations the interaction is strong and independent of surface tension.

Details

Language :
English
ISSN :
1079-7114
Volume :
107
Issue :
22
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
22182045
Full Text :
https://doi.org/10.1103/PhysRevLett.107.228104