Rectifying transport of a mixture of Brownian particles on an asymmetric periodic optical potential

Graham Milne; David McGloin; Svetlana Tatarkova; Wilson Sibbett; Kishan Dholakia

doi:10.1117/12.533746

Rectifying transport of a mixture of Brownian particles on an asymmetric periodic optical potential

Graham Milne^*, David McGloin, Svetlana Tatarkova, Wilson Sibbett, Kishan Dholakia

^*Corresponding author for this work

Physics

University of St Andrews

Research output: Contribution to journal › Conference article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	112-119
Number of pages	8
Journal	Proceedings of SPIE
Volume	5330
DOIs	https://doi.org/10.1117/12.533746
Publication status	Published - 2004
Event	Biomedical Optics 2004: Complex Dynamics, Fluctuations, Chaos, and Fractals in Biomedical Photonics - San Jose, CA, United States Duration: 25 Jan 2004 → 25 Jan 2004

Keywords

Bessel beams
Kramers theory
Optical fractionation
Optical trapping
Optical tweezers

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10.1117/12.533746

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title = "Rectifying transport of a mixture of Brownian particles on an asymmetric periodic optical potential",

abstract = "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.",

keywords = "Bessel beams, Kramers theory, Optical fractionation, Optical trapping, Optical tweezers",

author = "Graham Milne and David McGloin and Svetlana Tatarkova and Wilson Sibbett and Kishan Dholakia",

year = "2004",

doi = "10.1117/12.533746",

language = "English",

volume = "5330",

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journal = "Proceedings of SPIE",

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T1 - Rectifying transport of a mixture of Brownian particles on an asymmetric periodic optical potential

AU - Milne, Graham

AU - McGloin, David

AU - Tatarkova, Svetlana

AU - Sibbett, Wilson

AU - Dholakia, Kishan

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - Bessel beams

KW - Kramers theory

KW - Optical fractionation

KW - Optical trapping

KW - Optical tweezers

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DO - 10.1117/12.533746

M3 - Conference article

AN - SCOPUS:7644230979

SN - 0277-786X

VL - 5330

SP - 112

EP - 119

JO - Proceedings of SPIE

JF - Proceedings of SPIE

T2 - Biomedical Optics 2004: Complex Dynamics, Fluctuations, Chaos, and Fractals in Biomedical Photonics

Y2 - 25 January 2004 through 25 January 2004

ER -

Rectifying transport of a mixture of Brownian particles on an asymmetric periodic optical potential

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Keywords

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