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Proceedings Paper

Holographic tweezers: a platform for plasmonics
Author(s): Maria Dienerowitz; Graham Gibson; Richard Bowman; Miles Padgett
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Paper Abstract

We present a holographic tweezers workstation to optically trap and spectroscopically characterise metal nanoparticles. The versatility of the holographic tweezers allows us to create multiple traps manipulating several metal nanoparticles simultaneously. We developed an imaging system to view the nanoparticles in a transmission darkfield configuration without compromising the high numerical aperture of our trapping and viewing objective. In addition we implemented single particle spectroscopy to interrogate the trapped particles' properties with the ability to directly monitor the plasmonics coupling between particles while changing the distance between them. We also demonstrate a laser based method to generate fixed arrays of nanoparticles.

Paper Details

Date Published: 9 September 2011
PDF: 6 pages
Proc. SPIE 8097, Optical Trapping and Optical Micromanipulation VIII, 80971R (9 September 2011); doi: 10.1117/12.894695
Show Author Affiliations
Maria Dienerowitz, Univ. of Glasgow (United Kingdom)
Graham Gibson, Univ. of Glasgow (United Kingdom)
Richard Bowman, Univ. of Glasgow (United Kingdom)
Miles Padgett, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 8097:
Optical Trapping and Optical Micromanipulation VIII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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