Numerical analysis of second harmonic intensity images of a H–Si(111) surface after UV light pulse irradiation

2008 ◽  
Vol 255 (5) ◽  
pp. 3442-3446 ◽  
Author(s):  
Y. Miyauchi ◽  
H. Sano ◽  
G. Mizutani
Keyword(s):  
Numerical Analysis ◽  
Light Pulse ◽  
Uv Light ◽  
Second Harmonic ◽  
Pulse Irradiation ◽  
Harmonic Intensity ◽  
Intensity Images

scholarly journals Optical Second Harmonic Intensity Images of H-Si (111) Surfaces Irradiated by UV Light

Shinku ◽  
2005 ◽  
Vol 48 (8) ◽  
pp. 489-491 ◽  
Author(s):  
Yoshihiro MIYAUCHI ◽  
Haruyuki SANO ◽  
Goro MIZUTANI
Keyword(s):  
Uv Light ◽  
Second Harmonic ◽  
Harmonic Intensity ◽  
Intensity Images

Optical second harmonic intensity images of a silver grating surface

2002 ◽  
Vol 91 (7) ◽  
pp. 4229-4232 ◽  
Author(s):  
H. Sano ◽  
M. Kume ◽  
H. Nakagawa ◽  
G. Mizutani
Keyword(s):  
Second Harmonic ◽  
Harmonic Intensity ◽  
Intensity Images

Experimental and numerical analysis of sum frequency microscopic images of a H-Si(111) 1 × 1 surface after IR light pulse irradiation

2010 ◽  
Vol 42 (10-11) ◽  
pp. 1667-1670 ◽  
Author(s):  
Y. Miyauchi ◽  
H. Sano ◽  
J. Okada ◽  
H. Yamashita ◽  
G. Mizutani
Keyword(s):  
Numerical Analysis ◽  
Light Pulse ◽  
Pulse Irradiation ◽  
Microscopic Images ◽  
Sum Frequency ◽  
Ir Light

Highly Efficient Second-Harmonic Nanosource by Femtosecond Pulse Irradiation of a Metal Tip

2004 ◽  
pp. 455-459
Author(s):  
M. Zavelani-Rossi ◽  
M. Labardi ◽  
D. Polli ◽  
G. Cerullo ◽  
S. De Silvestri ◽  
...  
Keyword(s):  
Femtosecond Pulse ◽  
Second Harmonic ◽  
Pulse Irradiation ◽  
Highly Efficient ◽  
Metal Tip

scholarly journals Pushing and Pulling on OH-and H3O+ with Electric Fields Across Water’s Surface

2021 ◽  
Author(s):  
kamal ray ◽  
Aditya Limaye ◽  
Ankur Saha ◽  
Ka Chon Ng ◽  
Adam Willard ◽  
...  
Keyword(s):  
Electric Fields ◽  
Second Harmonic ◽  
Ionic Species ◽  
Dynamics Simulation ◽  
Dipole Orientation ◽  
Harmonic Intensity ◽  
Air Interface ◽  
Excess Surface ◽  
Internal Bias ◽  
Pushing And Pulling

<p>We use second harmonic generation spectroscopy, molecular dynamics simulation, and theoretical modeling to study the response of the neat liquid water-air interface to changes in the potential of an external electrode positioned above the liquid. We observe a parabolic dependence of second harmonic intensity on applied potential, indicating that water’s net interfacial dipole responds linearly. We also observe a minimum intensity when the potential is tuned to a specific positive value. Interpreting this minimum based on the macroscopic electrostatic potential profile yields misleading physical conclusions because it neglects the internal bias exerted on molecular orientations by the excess surface concentrations of OH<sup>-</sup> or H<sub>3</sub>O<sup>+</sup>. We thus find that water’s net interfacial dipole orientation is primarily responsive to the effects of these ionic species rather than the external electric field. </p>

scholarly journals Pushing and Pulling on OH-and H3O+ with Electric Fields Across Water’s Surface

2021 ◽  
Author(s):  
kamal ray ◽  
Aditya Limaye ◽  
Ankur Saha ◽  
Ka Chon Ng ◽  
Adam Willard ◽  
...  
Keyword(s):  
Electric Fields ◽  
Second Harmonic ◽  
Ionic Species ◽  
Dynamics Simulation ◽  
Dipole Orientation ◽  
Harmonic Intensity ◽  
Air Interface ◽  
Excess Surface ◽  
Internal Bias ◽  
Pushing And Pulling

<p>We use second harmonic generation spectroscopy, molecular dynamics simulation, and theoretical modeling to study the response of the neat liquid water-air interface to changes in the potential of an external electrode positioned above the liquid. We observe a parabolic dependence of second harmonic intensity on applied potential, indicating that water’s net interfacial dipole responds linearly. We also observe a minimum intensity when the potential is tuned to a specific positive value. Interpreting this minimum based on the macroscopic electrostatic potential profile yields misleading physical conclusions because it neglects the internal bias exerted on molecular orientations by the excess surface concentrations of OH<sup>-</sup> or H<sub>3</sub>O<sup>+</sup>. We thus find that water’s net interfacial dipole orientation is primarily responsive to the effects of these ionic species rather than the external electric field. </p>

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