Single-molecule near-field optical energy transfer microscopy

被引：48

作者：

Trabesinger, W ^{[1
]}

Kramer, A ^{[1
]}

Kreiter, M ^{[1
]}

Hecht, B ^{[1
]}

Wild, UP ^{[1
]}

机构：

[1] ETH Zentrum, Swiss Fed Inst Technol, Chem Phys Lab, CH-8092 Zurich, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 11期

关键词：

D O I：

10.1063/1.1506952

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The nano-optical interaction between a sharp tip and a single dipolar emitter is investigated. Changes of the excited state lifetime and the fluorescence rate of single molecules are recorded simultaneously as a function of the tip position relative to the molecule. A subdiffraction-limited area of decreased fluorescence and shortened lifetime is observed for gold-coated Si3N4 tips. The results are discussed in terms of molecular fluorescence in a system of stratified media. The outlined methodology holds promise for applications in ultrahigh-resolution near-field optical imaging at the level of single fluorophores. (C) 2002 American Institute of Physics.

引用

页码：2118 / 2120

页数：3

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