CaltechAUTHORS
  A Caltech Library Service

Direct Measurement of Hydrodynamic Cross Correlations between Two Particles in an External Potential

Meiners, Jens-Christian and Quake, Stephen R. (1999) Direct Measurement of Hydrodynamic Cross Correlations between Two Particles in an External Potential. Physical Review Letters, 82 (10). pp. 2211-2214. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:MEIprl99

[img]
Preview
PDF
See Usage Policy.

120Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:MEIprl99

Abstract

We report a direct measurement of the hydrodynamic interaction between two colloidal particles. Two micron-sized latex beads were held at varying distances in optical tweezers while their Brownian displacements were measured. In spite of the fact that fluid systems at low Reynolds number are generally considered to have no “memory,” the cross-correlation function of the bead positions shows a pronounced, time-delayed anticorrelation. We show that the anticorrelations can be understood in terms of the standard Oseen tensor hydrodynamic coupling.


Item Type:Article
Additional Information:©1999 The American Physical Society Received 22 October 1998 We thank John Doyle, John Brady, Noel Corngold, and Michael Brenner for helpful discussions. This work was supported by NSF CAREER Grant No. PHY-9722417.
Record Number:CaltechAUTHORS:MEIprl99
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MEIprl99
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.82.2211
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6872
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 Dec 2006
Last Modified:26 Dec 2012 09:26

Repository Staff Only: item control page