Colloidal hydrodynamic coupling in concentric optical vortices

K. Ladavac; D. G. Grier

doi:10.1209/epl/i2005-10022-6

Colloidal hydrodynamic coupling in concentric optical vortices

K. Ladavac, D. G. Grier

Research output: Contribution to journal › Article › peer-review

Abstract

Optical vortex traps created from helical modes of light can drive fluid-borne colloidal particles in circular trajectories. Concentric circulating rings of particles formed by coaxial optical vortices form a microscopic Couette cell, in which the amount of hydrodynamic drag experienced by the spheres depends on the relative sense of the rings' circulation. Tracking the particles' motions makes possible measurements of the hydrodynamic coupling between the circular particle trains and addresses recently proposed hydrodynamic instabilities for collective colloidal motions on optical vortices.

Original language	English (US)
Pages (from-to)	548-554
Number of pages	7
Journal	Europhysics Letters
Volume	70
Issue number	4
DOIs	https://doi.org/10.1209/epl/i2005-10022-6
State	Published - May 2005

ASJC Scopus subject areas

General Physics and Astronomy

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10.1209/epl/i2005-10022-6

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title = "Colloidal hydrodynamic coupling in concentric optical vortices",

abstract = "Optical vortex traps created from helical modes of light can drive fluid-borne colloidal particles in circular trajectories. Concentric circulating rings of particles formed by coaxial optical vortices form a microscopic Couette cell, in which the amount of hydrodynamic drag experienced by the spheres depends on the relative sense of the rings' circulation. Tracking the particles' motions makes possible measurements of the hydrodynamic coupling between the circular particle trains and addresses recently proposed hydrodynamic instabilities for collective colloidal motions on optical vortices.",

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year = "2005",

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doi = "10.1209/epl/i2005-10022-6",

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AB - Optical vortex traps created from helical modes of light can drive fluid-borne colloidal particles in circular trajectories. Concentric circulating rings of particles formed by coaxial optical vortices form a microscopic Couette cell, in which the amount of hydrodynamic drag experienced by the spheres depends on the relative sense of the rings' circulation. Tracking the particles' motions makes possible measurements of the hydrodynamic coupling between the circular particle trains and addresses recently proposed hydrodynamic instabilities for collective colloidal motions on optical vortices.

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Colloidal hydrodynamic coupling in concentric optical vortices

Abstract

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