Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability

Details Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability

2008-04-04

arxiv.org/abs/0804.0730v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.101.128301

We demonstrate both experimentally and theoretically that a colloidal sphere trapped in a static optical tweezer does not come to equilibrium, but rather reaches a steady state in which its probability flux traces out a toroidal vortex. This non-equilibrium behavior can be ascribed to a subtle bias of thermal fluctuations by non-conservative optical forces. The circulating sphere therefore acts as a Brownian motor. We briefly discuss ramifications of this effect for studies in which optical tweezers have been treated as potential energy wells.

Affiliated with

Also associated with

No associations

Rating

Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of non-conservative optical forces on the dynamics of optically trapped colloidal spheres: The fountain of probability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-190977