金属-介电纳米颗粒团簇在光子晶体微腔附近的光阱。
Optical trapping of metal-dielectric nanoparticle clusters near photonic crystal microcavities.
机构信息
Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA.
出版信息
Opt Lett. 2012 Sep 1;37(17):3690-2. doi: 10.1364/OL.37.003690.
PMID:22940992
Abstract
We predict the formation of optically trapped, metal-dielectric nanoparticle clusters above photonic crystal microcavities. We determine the conditions on particle size and position for a gold particle to be trapped above the microcavity. We then show that strong field redistribution and enhancement near the trapped gold nanoparticle results in secondary trapping sites for a pair of dielectric nanoparticles.
摘要
我们预测了在光子晶体微腔上方形成的光学捕获金属-介电纳米颗粒簇。我们确定了金粒子在微腔上方被捕获的颗粒尺寸和位置条件。然后，我们表明，在捕获的金纳米粒子附近，强场再分配和增强导致一对介电纳米粒子的次级捕获位置。
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