Light induced separation and flow of microscopic and biological particles

Graham Milne; Lynn Paterson; David McGloin; Andrew Riches; Kishan Dholakia

doi:10.1117/12.606336

Light induced separation and flow of microscopic and biological particles

Graham Milne^*, Lynn Paterson, David McGloin, Andrew Riches, 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
Article number	26
Pages (from-to)	46-53
Number of pages	8
Journal	Proceedings of SPIE
Volume	5736
DOIs	https://doi.org/10.1117/12.606336
Publication status	Published - 14 Mar 2005
Event	Nanomanipulation with Light - San Jose, CA, United States Duration: 25 Jan 2005 → 26 Jan 2005

Keywords

Bessel beams
Kramers theory
Optical fractionation
Optical trapping
Optical tweezers

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10.1117/12.606336

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title = "Light induced separation and flow of microscopic and biological particles",

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 Lynn Paterson and David McGloin and Andrew Riches and Kishan Dholakia",

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TY - JOUR

T1 - Light induced separation and flow of microscopic and biological particles

AU - Milne, Graham

AU - Paterson, Lynn

AU - McGloin, David

AU - Riches, Andrew

AU - Dholakia, Kishan

PY - 2005/3/14

Y1 - 2005/3/14

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 - 10.1117/12.606336

M3 - Conference article

AN - SCOPUS:21844435720

SN - 0277-786X

VL - 5736

SP - 46

EP - 53

JO - Proceedings of SPIE

JF - Proceedings of SPIE

M1 - 26

T2 - Nanomanipulation with Light

Y2 - 25 January 2005 through 26 January 2005

ER -

Light induced separation and flow of microscopic and biological particles

Abstract

Keywords

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