Translator Disclaimer
14 March 2005 Light-induced separation and flow of microscopic and biological particles
Author Affiliations +
Optical micro-manipulation has seen a resurgence of interest in recent years which has been due in part to new application areas and the use of tailored forms of light beam. In this paper, experimental observations of fluctuation-driven transport of silica microspheres within a two-dimensional optical potential of circular symmetry are observed. The potential is created by a Bessel light beam. The optical field is tailored to break the symmetry and create a static tilted periodic (washboard) potential. Transitions between locked and running modes may be observed. The running mode manifests itself by rapid accumulation of particles at the beam centre. We discuss what happens with mixtures of particles in such an optical potential.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Graham Milne, Lynn Paterson, David McGloin, Andrew Riches, and Kishan Dholakia "Light-induced separation and flow of microscopic and biological particles", Proc. SPIE 5736, Nanomanipulation with Light, (14 March 2005);


Optical micromanipulation takes hold
Proceedings of SPIE (September 09 2006)
Optical conveyor belt based on Bessel beams
Proceedings of SPIE (August 18 2005)

Back to Top