Results 11 to 20 of about 482,455 (269)
Diffusion on Semiconductor Surfaces [PDF]
Physics Today, 2001 Atomic-resolution imaging techniques show that a good deal of surface physics can be understood with elementary statistical mechanics, but some surprisingly complex behaviors occur even in simple systems.
Zandvliet, Henricus J.W. +2 more
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Diffusion on ruffled membrane surfaces [PDF]
The Journal of Chemical Physics, 2007 We present a position Langevin equation for overdamped particle motion on rough two-dimensional surfaces. A Brownian dynamics algorithm is suggested to evolve this equation numerically, allowing for the prediction of effective (projected) diffusion coefficients over corrugated surfaces.
Naji, Ali, Brown, Frank L. H.
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Numerical computation of diffusion on a surface [PDF]
Proceedings of the National Academy of Sciences, 2005 We present a numerical method for computing diffusive transport on a surface derived from image data. Our underlying discretization method uses a Cartesian grid embedded boundary method for computing the volume transport in a region consisting of all points a small distance from the surface.
Schwartz, Peter +4 more
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Tunneling of Hydrogen and Deuterium Atoms on Interstellar Ices (Ih and ASW)
Frontiers in Astronomy and Space Sciences, 2021 Model calculations are performed to investigate the kinetic isotope effect of hydrogen and deuterium atom diffusion on hexagonal ice and amorphous solid water. Comparisons with experimental results by Kuwahata et al. (Phys. Rev. Lett., Sep. 2015, 115 (13)
Gunnar Nyman
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Wetting of copper surface by solid nanosized lead particles: molecular dynamics study [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017 Using molecular dynamics method, the solid state wetting in the system Pb (nanoparticle) / Cu (substrate) has been observed and studied. It has been found that the solid state spreading mechanism corresponds to the surface diffusion developed via the ...
A.V. Chirkov, V.M. Samsonov
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Reconsideration of Nanowire Growth Theory at Low Temperatures
Nanomaterials, 2021 We present a growth model that describes the nanowire length and radius versus time in the absence of evaporation or scattering of semiconductor atoms (group III atoms in the case of III-V NWs) from the substrate, nanowire sidewalls or catalyst ...
Vladimir G. Dubrovskii
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Diffusion in a surface: the atomic slide puzzle
Applied Physics A: Materials Science & Processing, 2002 We review measurements performed using scanning tunneling microscopy of the motion of impurity atoms in the Cu(001) surface. Like several other elements, the impurity that we have introduced. In, tends to embed itself in the first atomic layer of this surface. Via the motion of the embedded In atoms, we obtain direct information on the motion of the Cu
Saarloos, W. van +4 more
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Study of the Immersion Freezing Theory Using the Classical Nucleation Framework
Atmosphere, 2022 The classical nucleation theory for immersion freezing was used for the simulation of ice nuclei particle activation under atmospheric conditions. A modification of the surface diffusion energy was introduced that was based on the concept of a two ...
Mihalis Lazaridis
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Equilibrium neck shapes for initial stages of solid-state sintering due to surface diffusion in a disk model of clays [PDF]
Science of Sintering, 2011 We study equilibrium neck shapes corresponding to initial stages of solid-state sintering, using a microscopic model of clays in which particles have a uniform disk shape with a microscale diameter R and a nanoscale thickness δ = R/100.
Medved I., Moravčíková J.
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Modelling of catalytic reactivity of inhomogeneous surfaces in monomer-monomer reactions
Nonlinear Analysis, 2015 The kinetics of a A1 + A2 -> A1A2 reaction on inhomogeneous surfaces with continuously distributed adsorption sites is investigated numerically using two phenomenological models. One of them includes: the bulk diffusion of reactants from a bounded vessel
Vladas Skakauskas, Pranas Katauskis
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