TY - JOUR

T1 - Drag coefficient of a raftlike domain embedded in a fluid membrane being a near-critical binary mixture

AU - Fujitani, Youhei

PY - 2013/12/1

Y1 - 2013/12/1

N2 - We consider a circular liquid domain in a flat fluid membrane surrounded by three-dimensional fluids, and assume that the membrane outside the domain is a two-dimensional near-critical binary fluid mixture. The membrane viscosity outside the domain is assumed to be uniform, irrespective of the local composition, and to be the same as that of the domain. Using the Gaussian free-energy functional, we show that the drag coefficient of the domain can be decreased by the preferential attraction between the domain and a component of the mixture, unlike that of a rigid sphere in a three-dimensional near-critical binary fluid mixture studied recently.

AB - We consider a circular liquid domain in a flat fluid membrane surrounded by three-dimensional fluids, and assume that the membrane outside the domain is a two-dimensional near-critical binary fluid mixture. The membrane viscosity outside the domain is assumed to be uniform, irrespective of the local composition, and to be the same as that of the domain. Using the Gaussian free-energy functional, we show that the drag coefficient of the domain can be decreased by the preferential attraction between the domain and a component of the mixture, unlike that of a rigid sphere in a three-dimensional near-critical binary fluid mixture studied recently.

KW - Biomembrane

KW - Diffusion coefficient

KW - Lipid raft

KW - Lipid-bilayer membrane

KW - Model H

KW - Wetting

UR - http://www.scopus.com/inward/record.url?scp=84890949886&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890949886&partnerID=8YFLogxK

U2 - 10.7566/JPSJ.82.124601

DO - 10.7566/JPSJ.82.124601

M3 - Article

AN - SCOPUS:84890949886

VL - 82

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 12

M1 - 124601

ER -