Gap Plasmon Resonance in a Suspended Plasmonic Nanowire Coupled to a Metallic Substrate.
basic_science · Level V
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- Record sourced from PubMed, PMID 26192214.
- Also identified by DOI 10.1021/acs.nanolett.5b02307.
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Abstract
We present an experimental demonstration of nanoscale gap plasmon resonators that consist of an individual suspended plasmonic nanowire (NW) over a metallic substrate. Our study demonstrates that the NW supports strong gap plasmon resonances of various gap sizes including single-nanometer-scale gaps. The obtained resonance features agree well with intuitive resonance models for near- and far-field regimes. We also illustrate that our suspended NW geometry is capable of constructing plasmonic coupled systems dominated by quasi-electrostatics.