Quantum dynamical model of laser‐stimulated isotope separation of adsorbed species: Role of anharmonicity, coupling strength, and energy feedback from the heated substrate

1983 ◽  
Vol 78 (8) ◽  
pp. 5197-5209 ◽  
Author(s):  
Jui‐teng Lin ◽  
Thomas F. George
Keyword(s):  
Coupling Strength ◽  
Isotope Separation ◽  
Dynamical Model ◽  
Adsorbed Species ◽  
Energy Feedback ◽  
Quantum Dynamical ◽  
Heated Substrate

The role of the spin-orbit coupling strength in the MO effects of magnetic insulators

2001 ◽  
Vol 37 (4) ◽  
pp. 2411-2413 ◽  
Author(s):  
You Xu ◽  
Jiehui Yang ◽  
Xijuan Zhang ◽  
Fang Zhang ◽  
M. Guillot
Keyword(s):  
Coupling Strength ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Magnetic Insulators

scholarly journals Role of Solid Wall Properties in the Interface Slip of Liquid in Nanochannels

Micromachines ◽  
2018 ◽  
Vol 9 (12) ◽  
pp. 663 ◽  
Author(s):  
Wei Gao ◽  
Xuan Zhang ◽  
Xiaotian Han ◽  
Chaoqun Shen
Keyword(s):  
Liquid Flow ◽  
Coupling Strength ◽  
Solid Wall ◽  
Slip Length ◽  
Boundary Slip ◽  
Near Surface ◽  
Wall Properties ◽  
Fluid Coupling ◽  
Interface Slip

A two-dimensional molecular dynamics model of the liquid flow inside rough nanochannels is developed to investigate the effect of a solid wall on the interface slip of liquid in nanochannels with a surface roughness constructed by rectangular protrusions. The liquid structure, velocity profile, and confined scale on the boundary slip in a rough nanochannel are investigated, and the comparison of those with a smooth nanochannel are presented. The influence of solid wall properties, including the solid wall density, wall-fluid coupling strength, roughness height and spacing, on the interfacial velocity slip are all analyzed and discussed. It is indicated that the rough surface induces a smaller magnitude of the density oscillations and extra energy losses compared with the smooth solid surface, which reduce the interfacial slip of liquid in a nanochannel. In addition, once the roughness spacing is very small, the near-surface liquid flow dominates the momentum transfer at the interface between liquid and solid wall, causing the role of both the corrugation of wall potential and wall-fluid coupling strength to be less obvious. In particular, the slip length increases with increasing confined scales and shows no dependence on the confined scale once the confined scale reaches a critical value. The critical confined scale for the rough channel is larger than that of the smooth scale.

scholarly journals Effects of the Interfacial Structure on the Methanol Oxidation on Platinum Single Crystal Electrodes

Surfaces ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 177-192 ◽  
Author(s):  
Mohammad Kamyabi ◽  
Ricardo Martínez-Hincapié ◽  
Juan Feliu ◽  
Enrique Herrero
Keyword(s):  
Single Crystal ◽  
Methanol Oxidation ◽  
Interfacial Structure ◽  
Direct Oxidation ◽  
Adsorbed Species ◽  
Oxidation Of Methanol ◽  
Methanol Solutions ◽  
Platinum Single Crystal ◽  
The Right

Methanol oxidation has been studied on low index platinum single crystal electrodes using methanol solutions with different pH (1–5) in the absence of specific adsorption. The goal is to determine the role of the interfacial structure in the reaction. The comparison between the voltammetric profiles obtained in the presence and absence of methanol indicates that methanol oxidation is only taking place when the surface is partially covered by adsorbed OH. Thus, on the Pt(111) electrode, the onset for the direct oxidation of methanol and the adsorption of OH coincide. In this case, the adsorbed OH species are not a mere spectator, because the obtained results for the reaction order for methanol and the proton concentrations indicate that OH adsorbed species are involved in the reaction mechanism. On the other hand, the dehydrogenation step to yield adsorbed CO on the Pt(100) surface coincides with the onset of OH adsorption on this electrode. It is proposed that adsorbed OH collaborates in the dehydrogenation step during methanol oxidation, facilitating either the adsorption of the methanol in the right configuration or the cleavage of the C—H bond.

Role of Thermal Fluctuations in a Classical Dynamical Model for Fission

1982 ◽  
Vol 25 (4) ◽  
pp. 517-521 ◽  
Author(s):  
S K Samaddar ◽  
D Sperber ◽  
M Zielinska-Pfabé ◽  
M I Sobel
Keyword(s):  
Thermal Fluctuations ◽  
Dynamical Model

The role of adsorbate structure in the photodissociation dynamics of adsorbed species: Methyl iodide/MgO(100)

1995 ◽  
Vol 102 (18) ◽  
pp. 7267-7276 ◽  
Author(s):  
D. Howard Fairbrother ◽  
K. A. Briggman ◽  
P. C. Stair ◽  
Eric Weitz
Keyword(s):  
Methyl Iodide ◽  
Adsorbed Species ◽  
Adsorbate Structure

Laser-induced charge transfer and photodesorption of Cs at Cu(111): quantum dynamical model simulations

2007 ◽  
Vol 88 (3) ◽  
pp. 535-546 ◽  
Author(s):  
D. Kröner ◽  
T. Klamroth ◽  
M. Nest ◽  
P. Saalfrank
Keyword(s):  
Charge Transfer ◽  
Dynamical Model ◽  
Model Simulations ◽  
Quantum Dynamical ◽  
Induced Charge
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