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Materials 2019, 12(5), 836;

Sum-Frequency Generation Spectroscopy of Plasmonic Nanomaterials: A Review

Univ Paris-Sud, Université Paris-Saclay, Laboratoire de Chimie Physique, CNRS, Batiment 201 P2, 91405 Orsay, France
EPF-Ecole d’Ingénieurs, 3 bis rue Lakanal, 92330 Sceaux, France
Authors to whom correspondence should be addressed.
Current address: Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
Received: 21 February 2019 / Revised: 4 March 2019 / Accepted: 5 March 2019 / Published: 12 March 2019
(This article belongs to the Special Issue Plasmonics and its Applications)
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We report on the recent scientific research contribution of non-linear optics based on Sum-Frequency Generation (SFG) spectroscopy as a surface probe of the plasmonic properties of materials. In this review, we present a general introduction to the fundamentals of SFG spectroscopy, a well-established optical surface probe used in various domains of physical chemistry, when applied to plasmonic materials. The interest of using SFG spectroscopy as a complementary tool to surface-enhanced Raman spectroscopy in order to probe the surface chemistry of metallic nanoparticles is illustrated by taking advantage of the optical amplification induced by the coupling to the localized surface plasmon resonance. A short review of the first developments of SFG applications in nanomaterials is presented to span the previous emergent literature on the subject. Afterwards, the emphasis is put on the recent developments and applications of the technique over the five last years in order to illustrate that SFG spectroscopy coupled to plasmonic nanomaterials is now mature enough to be considered a promising research field of non-linear plasmonics. View Full-Text
Keywords: nanoparticles; non-linear optics; surface plasmons; sum-frequency generation spectroscopy; interfaces; gold nanoparticles; non-linear optics; surface plasmons; sum-frequency generation spectroscopy; interfaces; gold

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Humbert, C.; Noblet, T.; Dalstein, L.; Busson, B.; Barbillon, G. Sum-Frequency Generation Spectroscopy of Plasmonic Nanomaterials: A Review. Materials 2019, 12, 836.

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