期刊
ACS NANO
卷 4, 期 8, 页码 4579-4586出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn101017b
关键词
near-field optics; molecular probes; localized surface plasmon; quantitative analysis; nanoscale photopolymerization
类别
资金
- Agence Nationale de la Recherche (ANR) [BLANC 07-2-188654]
- UCB Miller Institute
- Office of Basic Energy Science of the U.S. Department of the Energy
We report on the quantitative characterization of the plasmonic optical near-field of a single silver nanoparticle. Our approach relies on nanoscale molecular molding of the confined electromagnetic field by photoactivated molecules. We were able to directly image the dipolar profile of the near-field distribution with a resolution better than 10 nm and to quantify the near-field depth and its enhancement factor. A single nanoparticle spectral signature was also assessed. This quantitative characterization constitutes a prerequisite for developing nanophotonic applications.
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