Three-dimensional optical trapping of partially silvered silica microparticles

Jordan, P., Cooper, J., Mcnay, G., Docherty, F.T. , Smith, W.E., Sinclair, G. and Padgett, M.J. (2004) Three-dimensional optical trapping of partially silvered silica microparticles. Optics Letters, 29(21), pp. 2488-2490. (doi:10.1364/OL.29.002488)

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Abstract

We demonstrate three-dimensional trapping of micrometer- diameter silica particles, partially coated with silver, within conventional optical tweezers. Although metallic particles are usually repelled from the beam focus by the scattering force, we show that transparent spheres partially coated with silver can be trapped with efficiencies comparable with dielectric particles. The trapping characteristics of these particles are examined as a function of metallic coverage, and the application of these particles to surface-enhanced resonance Raman scattering is investigated.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Docherty, Dr Frances and Padgett, Professor Miles
Authors: Jordan, P., Cooper, J., Mcnay, G., Docherty, F.T., Smith, W.E., Sinclair, G., and Padgett, M.J.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN:0146-9592
ISSN (Online):1539-4794

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