3D nanostar dimers with a sub-10-nm gap for single-/few-molecule surface-enhanced raman scattering.
Plasmonic nanostar-dimers, decoupled from the substrate, have been fabricated by combining electron-beam lithography and reactive-ion etching techniques. The 3D architecture, the sharp tips of the nanostars and the sub-10 nm gap size promote the formation of giant electric-field in highly localized hot-spots. The single/few molecule detection capability of the 3D nanostar-dimers has been demonstrated by Surface-Enhanced Raman Scattering.
Nanostructures, Istituto Italiano di Tecnologia, via Morego 30, Genova, 16163, Italy.
Manohar
M
Chirumamilla
Andrea
A
Toma
Anisha
A
Gopalakrishnan
Gobind
G
Das
Remo Proietti
RP
Zaccaria
Roman
R
Krahne
Eliana
E
Rondanina
Marco
M
Leoncini
Carlo
C
Liberale
Francesco
F
De Angelis
Enzo
E
Di Fabrizio
electron-beam lithography; nanostructures; plasmonics; single-molecule surface-enhanced Raman scattering; sub-10-nm gap