Extended organization of colloidal microparticles by surface plasmon polariton excitation
Extended organization of colloidal microparticles by surface plasmon polariton excitation
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DOI：
10.1103/physrevb.73.085417
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发表时间：
2006-02-01
影响因子：
3.7
通讯作者：
Dholakia, K
中科院分区：
文献类型：
--
作者：
Garcés-Chávez, V;Quidant, R;Dholakia, K
在本文中，我们证明了第一次使用增强的光学力和光学诱导的热泳和对流力产生的表面等离子体激元激发大规模订购和捕获的胶体聚集体。我们确定制度，其中每一个这些力量占主导地位的胶体动力学，并导致不同的集体平衡状态。这些包括聚集和组织成六方密堆积的胶体晶体，排列成线性胶体颗粒链，以及在激发区域周围形成环状胶体。
In this paper we demonstrate the first use of enhanced optical forces and optically induced thermophoretic and convective forces produced by surface plasmon polariton excitation for large-scale ordering and trapping of colloidal aggregations. We identify regimes in which each of these forces dominate the colloidal dynamics and lead to different collective equilibrium states. These include accumulation and organization into hexagonal close-packed colloidal crystals, arrangement into linear colloidal particle chains, and the formation of colloids in a ring formation about the excited region.