Hot-Spot Engineering in 3D Multi-Branched Nanostructures: Ultrasensitive Substrates for Surface-Enhanced Raman Spectroscopy

Publikation: Forskning - peer reviewTidsskriftartikel

Abstrakt

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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Detaljer

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.
OriginalsprogEngelsk
Artikelnummer1600836
TidsskriftAdvanced Optical Materials
Vol/bind5
Tidsskriftsnummer4
Antal sider7
ISSN2195-1071
DOI
StatusUdgivet - 2017
PublikationsartForskning
Peer reviewJa
ID: 252018766