A Theoretical Investigation of Surface‐enhanced Sum‐frequency Generation

Nobel metal nanohole arrays have been used extensively in chemical and biological systems due to their fascinating optical properties. Gold nanohole arrays (Au NHAs) were prepared as surface plasmon polaritons (SPP) generators for the surface-enhanced sum-frequency generation (SFG) detection of 4-Mercaptobenzonitrile (4-MBN). The angle-resolved reflectance spectra revealed that the Au NHAs have three angle-dependent SPP modes and two non-dispersive localized surface plasmon resonance (LSPR) modes under different structural orientation angles (sample surface orientation). An enhancement factor of ~30 was achieved when the SPP and LSPR modes of the Au NHAs were tuned to match the incident visible (VIS) and output SFG, respectively. This multi-mode matching strategy provided flexible controls and selective spectral windows for surface-enhanced measurements, and was especially useful in nonlinear spectroscopy where more than one light beam involved. The structural orientation- and power-dependent performance demonstrated the potential of plasmonic NHAs in SFG and other nonlinear sensing applications, and provided a promising surface molecular analysis development platform.

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Plasmonic Gold Nanohole Arrays for Surface-Enhanced Sum Frequency Generation Detection

Nanomaterials ◽

10.3390/nano10122557 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2557

Author(s):

Wei Guo ◽

Bowen Liu ◽

Yuhan He ◽

Enming You ◽

Yongyan Zhang ◽

...

Keyword(s):

Surface Plasmon ◽

Nonlinear Spectroscopy ◽

Sum Frequency Generation ◽

Localized Surface Plasmon ◽

Sum Frequency ◽

Structural Orientation ◽

Sensing Applications ◽

Surface Enhanced ◽

Nanohole Arrays ◽

Frequency Generation

Nobel metal nanohole arrays have been used extensively in chemical and biological systems because of their fascinating optical properties. Gold nanohole arrays (Au NHAs) were prepared as surface plasmon polariton (SPP) generators for the surface-enhanced sum-frequency generation (SFG) detection of 4-Mercaptobenzonitrile (4-MBN). The angle-resolved reflectance spectra revealed that the Au NHAs have three angle-dependent SPP modes and two non-dispersive localized surface plasmon resonance (LSPR) modes under different structural orientation angles (sample surface orientation). An enhancement factor of ~30 was achieved when the SPP and LSPR modes of the Au NHAs were tuned to match the incident visible (VIS) and output SFG, respectively. This multi-mode matching strategy provided flexible controls and selective spectral windows for surface-enhanced measurements, and was especially useful in nonlinear spectroscopy where more than one light beam was involved. The structural orientation- and power-dependent performance demonstrated the potential of plasmonic NHAs in SFG and other nonlinear sensing applications, and provided a promising surface molecular analysis development platform.

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Theoretical investigation of impedance matching in the process of sum-frequency generation in an external resonator

Acta Physica Sinica ◽

10.7498/aps.65.044207 ◽

2016 ◽

Vol 65 (4) ◽

pp. 044207

Author(s):

Yan Xiao-Juan ◽

Ma Wei-Guang ◽

Tan Wei

Keyword(s):

Theoretical Investigation ◽

Impedance Matching ◽

Sum Frequency Generation ◽

External Resonator ◽

Sum Frequency ◽

Frequency Generation

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Surface enhanced sum frequency generation of carbon monoxide adsorbed on platinum nanoparticle arrays

The Journal of Chemical Physics ◽

10.1063/1.1290024 ◽

2000 ◽

Vol 113 (13) ◽

pp. 5432 ◽

Cited By ~ 95

Author(s):

Steve Baldelli ◽

Aaron S. Eppler ◽

Erik Anderson ◽

Yuen-Ron Shen ◽

Gabor A. Somorjai

Keyword(s):

Carbon Monoxide ◽

Sum Frequency Generation ◽

Nanoparticle Arrays ◽

Platinum Nanoparticle ◽

Sum Frequency ◽

Surface Enhanced ◽

Frequency Generation

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Temperature Dependence of the Air/Water Interface Revealed by Polarization Sensitive Sum-Frequency Generation Spectroscopy

10.26434/chemrxiv.5938177.v2 ◽

2018 ◽

Author(s):

Daniel R. Moberg ◽

Shelby C. Straight ◽

Francesco Paesani

Keyword(s):

Temperature Dependence ◽

Low Frequency ◽

Potential Energy Function ◽

Md Simulations ◽

Sum Frequency Generation ◽

Water Molecules ◽

Water Interface ◽

Sum Frequency ◽

Air Water Interface ◽

Frequency Generation

<div> <div> <div> <p>The temperature dependence of the vibrational sum-frequency generation (vSFG) spectra of the the air/water interface is investigated using many-body molecular dynamics (MB-MD) simulations performed with the MB-pol potential energy function. The total vSFG spectra calculated for different polarization combinations are then analyzed in terms of molecular auto-correlation and cross-correlation contributions. To provide molecular-level insights into interfacial hydrogen-bonding topologies, which give rise to specific spectroscopic features, the vSFG spectra are further investigated by separating contributions associated with water molecules donating 0, 1, or 2 hydrogen bonds to neighboring water molecules. This analysis suggests that the low frequency shoulder of the free OH peak which appears at ∼3600 cm−1 is primarily due to intermolecular couplings between both singly and doubly hydrogen-bonded molecules. </p> </div> </div> </div>

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