Tunable Plasmon Coupling in Distance-Controlled Gold Nanoparticles
Tunable Plasmon Coupling in Distance-Controlled Gold Nanoparticles
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DOI：
10.1021/la3001575
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发表时间：
2012-06-19
期刊：
影响因子：
3.9
通讯作者：
Knorr, Andreas
中科院分区：
文献类型：
--
作者：
Lange, Holger;Juarez, Beatriz H.;Knorr, Andreas
等离子体激子是金属薄膜和纳米颗粒中的共振激发。对于足够小的金属纳米粒子的静态距离，额外的等离子体激元耦合模作为纳米粒子之间的集体激发出现。在这里，我们展示了通过将聚(N-异丙基丙烯酰胺)微球和纳米球与金纳米粒子相结合，如何设计一种允许可控和可逆地开启和关闭以及调节等离子激元耦合模式的系统。
Plasmons are resonant excitations in metallic films and nanoparticles. For small enough static distances of metal nanoparticles, additional plasmon-coupled modes appear as a collective excitation between the nanoparticles. Here we show, by combining poly(N-isopropylacrylamide) micro- and nanospheres and Au nanoparticles, how to design a system that allows controllably and reversibly switching on and off, and tuning the plasmon-coupled mode.