双球纳米天线在界面处对单分子自发辐射的增强作用

Spontaneous emission enhancement of a single molecule by a double-sphere nanoantenna across an interface.

作者信息

Lee K-G, Eghlidi H, Chen X-W, Renn A, Götzinger S, Sandoghdar V

机构信息

Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.

出版信息

Opt Express. 2012 Oct 8;20(21):23331-8. doi: 10.1364/OE.20.023331.

DOI:10.1364/OE.20.023331

PMID:23188296

Abstract

We report on two orders of magnitude reduction in the fluorescence lifetime when a single molecule placed in a thin film is surrounded by two gold nanospheres across the film interface. By attaching one of the gold particles to the end of a glass fiber tip, we could control the modification of the molecular fluorescence at will. We find a good agreement between our experimental data and the outcome of numerical calculations.

摘要

我们报道，当置于薄膜中的单个分子被横跨薄膜界面的两个金纳米球包围时，其荧光寿命降低了两个数量级。通过将其中一个金粒子附着到玻璃纤维尖端的末端，我们能够随意控制分子荧光的改变。我们发现实验数据与数值计算结果吻合良好。