Optimization of second harmonic generation of gold nanospheres and nanorods in aqueous solution: the dominant role of surface area

2016 ◽  
Vol 18 (4) ◽  
pp. 3352-3356 ◽  
Author(s):  
Hoang Minh Ngo ◽  
Phuong Phong Nguyen ◽  
Isabelle Ledoux-Rak
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Second Harmonic Generation ◽  
Surface Area ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Dominant Role ◽  
First Hyperpolarizability ◽  
Gold Nanospheres

Gold nanoparticles display exceptionally strong β values. We demonstrated that the first hyperpolarizability (β) strongly depends on surface area of gold nanoparticles.

scholarly journals The Role of Surface Plasmon Resonance of Gold Nanoparticles for the Enhancement of Second Harmonic Generation of Nonlinear Chromophores

Inorganics ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 64 ◽  
Author(s):  
Anu Singh Bisht ◽  
Khuyen Hoang-Thi ◽  
Isabelle Ledoux-Rak ◽  
Hynd Remita ◽  
Frédéric Dumur ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Phenyl Ring ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Nlo Response ◽  
Spherical Gold Nanoparticles

A significant enhancement of the second harmonic generation (SHG) from second-order nonlinear optical (NLO) dyes in solution has been evidenced when these dyes were grafted onto the surface of spherical gold nanoparticles (AuNPs), as compared to their NLO response without AuNPs. The length, as well as the nature of the spacers between the gold particle and the chromophore, is shown to play an important role, a benzene linker being more favorable to AuNP-4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) interactions, as illustrated by a higher exaltation of the NLO response for DAST molecules linked to AuNP via a phenyl ring as compared to their equivalent with a CH2–CH2 link.

Surface area-dependent second harmonic generation from silver nanorods

2016 ◽  
Vol 18 (33) ◽  
pp. 23215-23219 ◽  
Author(s):  
Hoang Minh Ngo ◽  
Thanh Tuyen Luong ◽  
Isabelle Ledoux-Rak
Keyword(s):  
Second Harmonic Generation ◽  
Surface Area ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
First Hyperpolarizability ◽  
Silver Nanorods ◽  
First Time

We have evidenced strong first hyperpolarizabilities in silver nanorods (AgNRs) for the first time. The first hyperpolarizability β values linearly depend on the surface area of AgNRs.

Second-harmonic generation from arrays of symmetric gold nanoparticles

2006 ◽  
Vol 73 (4) ◽  
Author(s):  
M. D. McMahon ◽  
R. Lopez ◽  
R. F. Haglund ◽  
E. A. Ray ◽  
P. H. Bunton
Keyword(s):  
Gold Nanoparticles ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic

Second Harmonic Generation-based Nonlinear Plasmonic RI-Sensing in Solution: Pivotal Role of Particle Size

2021 ◽  
Author(s):  
Mrigank Verma ◽  
Manabendra Chandra
Keyword(s):  
Particle Size ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Solution Phase ◽  
Pivotal Role

Here, we demonstrate the utility of the second harmonic generation (SHG) for refractometric sensing in the solution phase. We employ an aqueous colloid of gold nanorods as our sensors and,...

Multipolar Contributions of the Second Harmonic Generation from Silver and Gold Nanoparticles

2007 ◽  
Vol 111 (26) ◽  
pp. 9044-9048 ◽  
Author(s):  
I. Russier-Antoine ◽  
E. Benichou ◽  
G. Bachelier ◽  
C. Jonin ◽  
P. F. Brevet
Keyword(s):  
Gold Nanoparticles ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Silver And Gold Nanoparticles
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