Localized surface plasmon resonances in nanostructures to enhance nonlinear vibrational spectroscopies: towards an astonishing molecular sensitivity

• Dan Lis and
• Francesca Cecchet

Beilstein J. Nanotechnol. 2014, 5, 2275–2292, doi:10.3762/bjnano.5.237

• spontaneous Raman spectroscopies. Compared to their linear equivalent, those nonlinear vibrational spectroscopies have proved to reach higher sensitivity down to the single molecule level, opening the way to astonishing perspectives for molecular analysis. Keywords: coherent anti-Stokes Raman scattering

• (CARS); nonlinear optical spectroscopies; sum-frequency generation (SFG); surfaces plasmon resonance; vibrational spectroscopies; Review 1. Introduction – linear vibrational spectroscopies A widespread approach in molecular analysis relies on the vibrational fingerprint of matter to obtain an intrinsic

• candidates to push forward the sensitivity of vibrational spectroscopies. Within the limited number of nonlinear vibrational spectroscopies, this review will specifically focus on surface-enhanced sum-frequency generation (SE-SFG) and surface-enhanced coherent anti-Stokes Raman scattering (SE-CARS) to