Nanogaps for SERS applications
Magazine article, 2014
The nanogap is possibly the single most important physical entity in surface-enhanced Raman scattering. Nanogaps between noble metal nanostructures deliver extremely high electric field-enhancement, resulting in an extraordinary amplification of both the excitation rate and the emission rate of Raman active molecules situated in the gap. In some cases, the resulting surface-enhancement in the gap can be so high that Raman spectra from single molecules can be measured. Here, we briefly review some important concepts and experimental results on nanoscale gaps for SERS applications.
SURFACE-ENHANCED RAMAN
METAL NANOPARTICLES
SPECTROSCOPY
GOLD NANOPARTICLES
PLASMON RESONANCE
DIMERS
POLARIZATION
PARTICLE PAIRS
REMOTE-EXCITATION
SCATTERING SERS
Author
Lianming Tong
Chinese Academy of Sciences
H. X. Xu
Chinese Academy of Sciences
Mikael Käll
Chalmers, Applied Physics, Bionanophotonics
MRS Bulletin
0883-7694 (ISSN)
Vol. 39 2 163-168Subject Categories (SSIF 2011)
Atom and Molecular Physics and Optics
Nano Technology
DOI
10.1557/mrs.2014.2