Optical forces near a nanoantenna
MetadataShow full item record
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.
Ploschner , M , Mazilu , M , Krauss , T F & Dholakia , K 2010 , ' Optical forces near a nanoantenna ' Journal of Nanophotonics , vol 4 , 041570 . , 10.1117/1.3332850
Journal of Nanophotonics
Copyright 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Partially funded by UK EPSRC
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.