Special Section on Nanostructures Honoring Craig F. Bohren

Optical forces near a nanoantenna

[+] Author Affiliations
Martin Ploschner, Michael Mazilu, Thomas F. Krauss, Kishan Dholakia

SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS United Kingdom

J. Nanophoton. 4(1), 041570 (February 4, 2010). doi:10.1117/1.3332850
History: Received November 11, 2009; Revised January 23, 2010; Accepted January 25, 2010; February 4, 2010; Online February 04, 2010
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Abstract

The Maxwell stress tensor method is used to calculate the optical forces acting upon a glass nanosphere in the proximity of optically excited gold nanoantenna structures. The dependence of optical forces over a full range of excitation angles is explored: the total internal reflection excitation does not bring any particular advantage to trapping efficiency when compared to the normal incidence excitation. Our calculations show multiple trapping sites with similar trapping properties for the normal and the total internal reflection cases, respectively; furthermore, the convective heating probably dominates over any optical forces in such systems.

© 2010 Society of Photo-Optical Instrumentation Engineers

Topics

Nano antennas

Citation

Martin Ploschner ; Michael Mazilu ; Thomas F. Krauss and Kishan Dholakia
"Optical forces near a nanoantenna", J. Nanophoton. 4(1), 041570 (February 4, 2010). ; http://dx.doi.org/10.1117/1.3332850


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