期刊
NANO LETTERS
卷 13, 期 5, 页码 2194-2198出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl400698w
关键词
Optical antenna; optical antenna chip; SERS enhancement; single molecule SERS; directional Raman scattering; isotopologues method
类别
资金
- National Science Foundation (NSF) [ECCS-0747560, ECCS-1201687]
- Harvard Quantum Optics Center
- Center for Excitonics, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences [DE-SC0001088]
- UT/ORNL Joint Institute for Advanced Materials
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0004792]
- National Science Foundation [CHE-0954297, DMR-0906752]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0747560] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1201687] Funding Source: National Science Foundation
Controlling light from single emitters is an overarching theme of nano-optics. Antennas are routinely used to modify the angular emission patterns of radio wave sources. Optical antennas translate these principles to visible and infrared wavelengths and have been recently used to modify fluorescence from single quantum dots and single molecules. Understanding the properties of single molecules, however, would be advanced were one able to observe their vibrational spectra through Raman scattering in a very reproducible manner but it is a hugely challenging task, as Raman scattering cross sections are very weak. Here we measure for the first time the highly directional emission patterns of Raman scattering from single molecules in the feed gaps of optical antennas fabricated on a chip. More than a thousand single molecule events are observed, revealing that an unprecedented near-unity fraction of optical antennas have single molecule sensitivity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据