Journal
ADVANCED OPTICAL MATERIALS
Volume 5, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201600836
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Funding
- Danish Council for Independent Research (the FTP project PlasTPV) [1335-00104]
- Compagnia di San Paolo [ROL 10262]
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The detection of probe molecules at ultralow concentrations, even at the single-molecule level, can be addressed with the breakthrough concept of plasmonic hot-spot engineering. In view of that, the fabrication of nanostructures endowed with sub-10 nm gaps and extremely large near-field enhancement has gained increasing attention, becoming a key-condition for improved sensitivity. The present work demonstrates a new perspective in ultrasensitive detection by engineering every individual plasmonic nanostructure with a giant electric field confinement and superior hot-spot densities, thus eliminating the need for extremely narrow interparticle separations.
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