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Nanogaps for SERS applications

L. M. Tong ; H. X. Xu ; Mikael Käll (Institutionen för teknisk fysik, Bionanofotonik)
Mrs Bulletin (0883-7694). Vol. 39 (2014), 2, p. 163-168.
[Artikel, övrig vetenskaplig]

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.

Nyckelord: SURFACE-ENHANCED RAMAN, GOLD NANOPARTICLES, METAL NANOPARTICLES, REMOTE-EXCITATION, PLASMON RESONANCE, SCATTERING SERS, PARTICLE PAIRS, SPECTROSCOPY, POLARIZATION, DIMERS



Denna post skapades 2014-07-22. Senast ändrad 2017-10-03.
CPL Pubid: 200643

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Bionanofotonik (2007-2015)

Ämnesområden

Atom- och molekylfysik och optik
Nanoteknik

Chalmers infrastruktur