Optical forces near a nanoantenna
Optical forces near a nanoantenna
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DOI：
10.1117/1.3332850
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发表时间：
2010-02-04
影响因子：
1.5
通讯作者：
Dholakia, Kishan
中科院分区：
文献类型：
--
作者：
Ploschner, Martin;Mazilu, Michael;Dholakia, Kishan
利用麦克斯韦应力张量法计算了作用在光学激发的金纳米天线结构附近的玻璃纳米球上的光学力。在整个范围内的激发角的光学力的依赖性进行了探讨：全内反射激发不带来任何特别的优势，捕获效率相比，垂直入射激发。我们的计算表明，多个捕获站点具有相似的捕获特性的正常和全内反射的情况下，分别;此外，对流加热可能占主导地位的任何光学力在这样的系统。
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.