Brownian Vortexes
| dc.creator | Sun, Bo | |
| dc.creator | Lin, Jiayi | |
| dc.creator | Darby, Ellis | |
| dc.creator | Grosberg, Alexander Y. | |
| dc.creator | Grier, David G. | |
| dc.date | 2009-03-15 | |
| dc.date.accessioned | 2026-07-07T12:52:47Z | |
| dc.date.available | 2026-07-07T12:52:47Z | |
| dc.description | A particle diffusing around a point of stable mechanical equilibrium in a static but non-conservative force field enters into a steady state characterized by circulation in the probability flux. Circulation in such a Brownian vortex is not simply a deterministic response to the solenoidal component of the force, but rather reflects an interplay between force-driven probability currents and diffusion. As an example of this previously unrecognized class of stochastic heat engines, we consider a colloidal sphere stably trapped in a conventional optical tweezer. Rather than coming into thermodynamic equilibrium with the surrounding heat bath, the particle's Brownian fluctuations are biased into a toroidal roll. We demonstrate both theoretically and experimentally that the circulation in this practical realization of the Brownian vortex can undergo flux reversal. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0903.2649 | |
| dc.identifier | http://arxiv.org/abs/0903.2649 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/223407 | |
| dc.subject | Soft Condensed Matter | |
| dc.subject | Statistical Mechanics | |
| dc.title | Brownian Vortexes | |
| dc.type | text |