Brownian Particle in an Optical Potential of the Washboard Type

Svetlana A. Tatarkova, Wilson Sibbett, Kishan Dholakia

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)


Experimental observations of the fluctuation-driven net transport of silica microspheres are presented in a two-dimensional optical potential of circular symmetry created by a Bessel light beam. The optical field is tailored to break symmetry and create a static tilted periodic (washboard) potential. As the tilt of potential exceeds a threshold, a transition between locked and running modes is observed. The running mode manifests itself by the rapid accumulation of particles at the beam center.

Original languageEnglish
JournalPhysical review letters
Issue number3
Publication statusPublished - 2003 Jul 15

Bibliographical note

Funding Information:
We thank the U.K. Engineering and Physical Sciences Research Council for their support of this work.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Dive into the research topics of 'Brownian Particle in an Optical Potential of the Washboard Type'. Together they form a unique fingerprint.

Cite this