Three-Dimensional Mapping of Near-Field Interactions via Single-Photon Tomography

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• 作者：Benjamin D. Mangum ; Eyal Shafran ; Chun Mu ; Jordan M. Gerton
• 刊名：Nano Letters
• 出版年：2009
• 出版时间：October 14, 2009
• 年：2009
• 卷：9
• 期：10
• 页码：3440-3446
• 全文大小：285K
• 年卷期：v.9,no.10(October 14, 2009)
• ISSN：1530-6992

文摘

We demonstrate a near-field tomography method for investigating the coupling between a nanoscopic probe and a fluorescent sample. By correlating the arrival of single fluorescence photons with the lateral and vertical position of an oscillating tip, a complete three-dimensional analysis of the near-field coupling is achieved. The technique is used to reveal a number of interesting three-dimensional near-field features and to improve image contrast in tip-enhanced fluorescence microscopy.