scholarly journals Adverse Role of Shape and Size in Second-Harmonic Scattering from Gold Nanoprisms

2020 ◽  
Vol 124 (27) ◽  
pp. 14797-14803
Author(s):  
Krzysztof Nadolski ◽  
Emmanuel Benichou ◽  
Nina Tarnowicz-Staniak ◽  
Andrzej Żak ◽  
Christian Jonin ◽  
...  
Keyword(s):  
Second Harmonic ◽  
Gold Nanoprisms ◽  
Second Harmonic Scattering ◽  
Shape And Size

Large second harmonic generation from hollow gold nanoprisms: role of plasmon hybridization and structural effects

2017 ◽  
Vol 19 (28) ◽  
pp. 18394-18399 ◽  
Author(s):  
Bidhan Hazra ◽  
Kamalika Das ◽  
Manabendra Chandra
Keyword(s):  
Optical Properties ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Plasmon Hybridization ◽  
Structural Effects ◽  
Structure And Morphology ◽  
Gold Nanoprisms

The structure and morphology of nanomateials strongly influence their nonlinear optical properties.

scholarly journals Hyaluronan orders water molecules in its nanoscale extended hydration shells

2021 ◽  
Vol 7 (10) ◽  
pp. eabf2558
Author(s):  
J. Dedic ◽  
H. I. Okur ◽  
S. Roke
Keyword(s):  
Second Harmonic ◽  
Hydration Shell ◽  
Water Molecules ◽  
Temperature Dependent ◽  
Flexible Chain ◽  
Optical Modeling ◽  
Hydration Shells ◽  
Second Harmonic Scattering ◽  
Nuclear Quantum Effects ◽  
Extracellular Environment

Hyaluronan (HA) is an anionic, highly hydrated bio-polyelectrolyte found in the extracellular environment, like the synovial fluid between joints. We explore the extended hydration shell structure of HA in water using femtosecond elastic second-harmonic scattering (fs-ESHS). HA enhances orientational water-water correlations. Angle-resolved fs-ESHS measurements and nonlinear optical modeling show that HA behaves like a flexible chain surrounded by extended shells of orientationally correlated water. We describe several ways to determine the concentration-dependent size and shape of a polyelectrolyte in water, using the amount of water oriented by the polyelectrolyte charges as a contrast agent. The spatial extent of the hydration shell is determined via temperature-dependent measurements and can reach up to 475 nm, corresponding to a length of 1600 water molecules. A strong isotope effect, stemming from nuclear quantum effects, is observed when light water (H2O) is replaced by heavy water (D2O), amounting to a factor of 4.3 in the scattered SH intensity.

scholarly journals Second-Harmonic Scattering as a Probe of Structural Correlations in Liquids

2016 ◽  
Vol 7 (21) ◽  
pp. 4311-4316 ◽  
Author(s):  
Gabriele Tocci ◽  
Chungwen Liang ◽  
David M. Wilkins ◽  
Sylvie Roke ◽  
Michele Ceriotti
Keyword(s):  
Second Harmonic ◽  
Second Harmonic Scattering

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,...

scholarly journals Investigating the Role of Gold Nanoparticle Shape and Size in Their Toxicities to Fungi

2018 ◽  
Vol 15 (5) ◽  
pp. 998 ◽  
Author(s):  
Kangze Liu ◽  
Zhonglei He ◽  
Hugh Byrne ◽  
James Curtin ◽  
Furong Tian
Keyword(s):  
Gold Nanoparticle ◽  
Nanoparticle Shape ◽  
Shape And Size

Optical second-harmonic scattering in rat-tail tendon

Biopolymers ◽  
1981 ◽  
Vol 20 (6) ◽  
pp. 1271-1290 ◽  
Author(s):  
Shmuel Roth ◽  
Isaac Freund
Keyword(s):  
Second Harmonic ◽  
Second Harmonic Scattering ◽  
Tail Tendon ◽  
Rat Tail
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