Beilstein J. Nanotechnol.2020,11, 1542–1545, doi:10.3762/bjnano.11.136
deposition [41], or on dense silver island films created by pulsed laser deposition [42] or physical vapor deposition [43]. In [44], individual plasmonic nanotags are prepared by coating gold nanoparticle clusters with Raman reporters. This work explores the minimum number of tags required for obtaining a
Beilstein J. Nanotechnol.2019,10, 1016–1023, doi:10.3762/bjnano.10.102
Vincenzo Amendola Department of Chemical Sciences, University of Padova, Padova, Italy 10.3762/bjnano.10.102 Abstract The use of plasmonic nanotags based on the surface-enhanced Raman scattering (SERS) effect is highly promising for several applications in analytical chemistry, biotechnological
assays and nanomedicine. To this end, a crucial parameter is the minimum number of SERS tags that allows for the collection of intense Raman signals under real operating conditions. Here, SERS Au nanotags (AuNTs) based on clustered gold nanoparticles are deposited on a substrate and analyzed in the same
suitability of plasmonic SERS labels for ultrasensitive analytical and biomedical applications is evident.
Keywords: discrete dipole approximation (DDA); gold nanoparticles (AuNPs); nanotags; surface-enhanced Raman scattering (SERS); surface plasmon resonance (SPR); Introduction
In surface-enhanced Raman
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Figure 1:
(A) Pictorial representation of the Au nanotag (AuNT), consisting of Au nanoparticles (NPs) aggrega...