M. L. Henle et al 2008 EPL 84 48001 doi:10.1209/0295-5075/84/48001
M. L. Henle1, R. McGorty2,3, A. B. Schofield4, A. D. Dinsmore2 and A. J. Levine1,5
Show affiliationsWe study the mobilities of point-like and extended objects (rods) on a spherical membrane to show how these quantities are modified in a striking manner by the curvature and topology of the membrane. We also present theoretical calculations and experimental measurements of the membrane fluid velocity field around a moving rod bound to the crowded interface of a water-in-oil droplet. By using different droplet sizes, membrane viscosities, and rod lengths, we show that the viscosity mismatch between the interior and exterior fluids leads to a suppression of the fluid flow on small droplets that cannot be captured by the flat-membrane predictions.
47.63.-b Biological fluid dynamics
87.16.dp Transport, including channels, pores, and lateral diffusion
Soft matter, liquids and polymers
Issue 4 (November 2008)
Received 11 July 2008, accepted for publication 5 October 2008
Published 10 November 2008
M. L. Henle et al 2008 EPL 84 48001
S. Liepelt and R. Lipowsky 2007 EPL 77 50002
Geneviève Comtet et al 2006 J. Phys.: Condens. Matter 18 S1927
Alberto Credi 2006 J. Phys.: Condens. Matter 18 S1779
Masayoshi Esashi and Takahito Ono 2005 J. Phys. D: Appl. Phys. 38 R223
Geneviève Comtet and Gérald Dujardin 2006 J. Phys.: Condens. Matter 18 S1777
H Tagashira et al 1977 J. Phys. D: Appl. Phys. 10 1051
Hirotake Sugawara and Y Sakai 1999 J. Phys. D: Appl. Phys. 32 1671
J de Urquijo et al 2003 J. Phys. D: Appl. Phys. 36 1489
J H Whealton 1974 J. Phys. B: At. Mol. Phys. 7 1602