Brownian Particle in an Optical Potential of the Washboard Type

Svetlana A. Tatarkova, Wilson Sibbett, Kishan Dholakia

Research output: Contribution to journalArticle

105 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

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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