Lateral optical binding between two colloidal particles

Ming Tzo Wei; Jack Ng; C. T. Chan; H. Daniel Ou-Yang

doi:10.1038/srep38883

Lateral optical binding between two colloidal particles

Ming Tzo Wei, Jack Ng, C. T. Chan, H. Daniel Ou-Yang^*

^*Corresponding author for this work

Department of Physics

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

20 Citations (Scopus)

Abstract

An optical binding force between two nearby colloidal particles trapped by two coherent laser beams is measured by phase-sensitive detection. The binding force is long-range and spatially oscillatory. For identical linearly-polarized incident beams, the oscillation period is equal to the optical wavelength. For mutually perpendicular polarizations, a new force appears with half-wavelength periodicity, caused by double inter-particle scattering. This force is observable only with cross-polarized incident beams, for which the stronger single-scattering forces are forbidden by parity.

Original language	English
Article number	38883
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep38883
Publication status	Published - 16 Dec 2016

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10.1038/srep38883

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title = "Lateral optical binding between two colloidal particles",

abstract = "An optical binding force between two nearby colloidal particles trapped by two coherent laser beams is measured by phase-sensitive detection. The binding force is long-range and spatially oscillatory. For identical linearly-polarized incident beams, the oscillation period is equal to the optical wavelength. For mutually perpendicular polarizations, a new force appears with half-wavelength periodicity, caused by double inter-particle scattering. This force is observable only with cross-polarized incident beams, for which the stronger single-scattering forces are forbidden by parity.",

author = "Wei, {Ming Tzo} and Jack Ng and Chan, {C. T.} and Ou-Yang, {H. Daniel}",

note = "Funding Information: Work at Lehigh University was supported in part by funds provided by NSF DMR-0923299 and Lehigh University Center for Optical Technologies. Work in Hong Kong was supported by HK Research Grant Council grant AOE/P-02/12 and 604011.",

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doi = "10.1038/srep38883",

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T1 - Lateral optical binding between two colloidal particles

AU - Wei, Ming Tzo

AU - Ng, Jack

AU - Chan, C. T.

AU - Ou-Yang, H. Daniel

N1 - Funding Information: Work at Lehigh University was supported in part by funds provided by NSF DMR-0923299 and Lehigh University Center for Optical Technologies. Work in Hong Kong was supported by HK Research Grant Council grant AOE/P-02/12 and 604011.

PY - 2016/12/16

Y1 - 2016/12/16

N2 - An optical binding force between two nearby colloidal particles trapped by two coherent laser beams is measured by phase-sensitive detection. The binding force is long-range and spatially oscillatory. For identical linearly-polarized incident beams, the oscillation period is equal to the optical wavelength. For mutually perpendicular polarizations, a new force appears with half-wavelength periodicity, caused by double inter-particle scattering. This force is observable only with cross-polarized incident beams, for which the stronger single-scattering forces are forbidden by parity.

AB - An optical binding force between two nearby colloidal particles trapped by two coherent laser beams is measured by phase-sensitive detection. The binding force is long-range and spatially oscillatory. For identical linearly-polarized incident beams, the oscillation period is equal to the optical wavelength. For mutually perpendicular polarizations, a new force appears with half-wavelength periodicity, caused by double inter-particle scattering. This force is observable only with cross-polarized incident beams, for which the stronger single-scattering forces are forbidden by parity.

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DO - 10.1038/srep38883

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AN - SCOPUS:85006504071

SN - 2045-2322

VL - 6

JO - Scientific Reports

JF - Scientific Reports

M1 - 38883

ER -

Lateral optical binding between two colloidal particles

Abstract

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