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APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 23
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Phys. Rev. Lett. 85, 4976–4979 (2000)

Like-Charge Attraction and Hydrodynamic Interaction

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Todd M. Squires1 and Michael P. Brenner2
1Department of Physics, Harvard University, Cambridge, Massachusetts 02138
2Department of Mathematics, MIT, Cambridge, Massachusetts 02139

Received 19 January 2000; published in the issue dated 4 December 2000

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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.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.4976
DOI:
10.1103/PhysRevLett.85.4976
PACS:
82.70.Dd
 
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