Results 21 to 30 of about 1,538,239 (302)

Oblique evaporation and surface diffusion [PDF]

open access: yes, 1997
The special structure of obliquely evaporated films has its origin in shadowing phenomena during film growth. Because of shadowing, the film consists of bundles of inclined columns with the bundles being aligned perpendicularly to the vapour incidence ...
Abelmann, Leon, Lodder, Cock
core   +3 more sources

Directionality in van der Waals Interactions: the Case of 4-Acetylbiphenyl Adsorbed on Au(111) [PDF]

open access: yes, 2020
We report on a theoretical study of adsorption of 4-Acetylbiphenyl molecule and its diffusion properties in the main directions of the Au(111) surface.
Lorente, N., Robles, R., Zobac, V.
core   +2 more sources

Wetting of copper surface by solid nanosized lead particles: molecular dynamics study [PDF]

open access: yesФизико-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
doaj   +1 more source

Tunneling of Hydrogen and Deuterium Atoms on Interstellar Ices (Ih and ASW)

open access: yesFrontiers 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
doaj   +1 more source

Surface and interstitial Ti diffusion at the rutile TiO2(110) surface [PDF]

open access: yes, 2010
Diffusion of Ti through the TiO2 (110) rutile surface plays a key role in the growth and reactivity of TiO2. To understand the fundamental aspects of this important process, we present an analysis of the diffusion of Ti adspecies at the stoichiometric ...
Anisimov   +50 more
core   +1 more source

Reconsideration of Nanowire Growth Theory at Low Temperatures

open access: yesNanomaterials, 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
doaj   +1 more source

Equilibrium neck shapes for initial stages of solid-state sintering due to surface diffusion in a disk model of clays [PDF]

open access: yesScience 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.
doaj   +1 more source

Study of the Immersion Freezing Theory Using the Classical Nucleation Framework

open access: yesAtmosphere, 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
doaj   +1 more source

Role of Rotations on Surface Diffusion of Water Trimers on Pd\{111\} [PDF]

open access: yes, 2016
Diffusion barriers for a cluster of three water molecules on Pd(111) have been estimated from ab-initio Density Functional Theory. A model for the diffusion of the trimer based in rotations yields a simple explanation of why the cluster can diffuse ...
de Andres, P. L., Ranea, Victor A.
core   +3 more sources

Modelling of catalytic reactivity of inhomogeneous surfaces in monomer-monomer reactions

open access: yesNonlinear 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
doaj   +1 more source

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