Like-charge attraction and hydrodynamic interaction
We demonstrate that the attractive interaction measured between like-charged colloidal spheres near a wall can be accounted for by a nonequilibrium hydrodynamic effect. We present both analytical results and Brownian dynamics simulations which quantitatively capture the one-wall experiments of Larsen and Grier [Nature (London) 385, 230 (1997)], using a single unmeasured parameter.
Squires
TM
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Brenner
MP