Fluorescence enhancement and energy transfer in apertureless scanning near-field optical microscopy

被引：11

作者：

Huang, Fu Min ^{[1
]}

Richards, David ^{[1
]}

机构：

[1] Kings Coll London, Dept Phys, London WC2R 2LS, England

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2006年 / 8卷 / 04期

关键词：

fluorescence enhancement; tip enhancement; ASNOM;

D O I：

10.1088/1464-4258/8/4/S25

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the mechanisms for fluorescence enhancement and energy transfer near a gold tip in apertureless scanning near-field optical microscopy. Using a simple quasi-static model, we show that the observed enhancement of fluorescence results from competition between enhancement and quenching, and is dependent on a range of experimental parameters. We find good qualitative agreement with the results of measurements of the effect of both sharp and blunt tips on quantum dot fluorescence, and provide a demonstration of tip-enhanced fluorescence imaging with 60 nm resolution.

引用

页码：S234 / S238

页数：5

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