Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 16, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3700725
Keywords
gold; nanoparticles; near-field scanning optical microscopy; numerical analysis; plasmonics
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Funding
- NanoNed
- Netherlands Foundation for Fundamental Research on Matter (FOM)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
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Local plasmonic coupling between a triangular gold island pair is observed with high spatial resolution (similar to 10 nm) by an apertureless scanning near-field optical microscope. The measured local field distribution is fully reproduced by three dimensional numerical simulations. Our results show a strong near-field coupling between two adjacent gold triangles, which gives direct evidence to the local field enhancement in plasmonic nanoantenna effect. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3700725]
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