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Surface diffusion on a stepped surface
Physical Review B, 1993Surface diffusion of an adatom on a vicinal surface is investigated, using site-dependent hopping rates based on a model surface-potential profile of a regularly stepped surface. We solved analytically the coupled rate equations for the occupation probability of an adatom at a sufficiently long time, in analogy to the tight-binding theory of electronic
, Natori, , Godby
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Europhysics Letters (EPL), 1990
A simple growth model is investigated where particles are deposited onto a substrate randomly and subsequently relax into a position nearby where the binding is strongest. In space dimension d = 2 the surface roughness exponent and the dynamical exponent are ξ = 1.4 ± 0.1 and z = 3.8 ± 0.5.
Wolf, Dietrich, Villain, Jacques
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A simple growth model is investigated where particles are deposited onto a substrate randomly and subsequently relax into a position nearby where the binding is strongest. In space dimension d = 2 the surface roughness exponent and the dynamical exponent are ξ = 1.4 ± 0.1 and z = 3.8 ± 0.5.
Wolf, Dietrich, Villain, Jacques
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Low-Temperature Surface Diffusion on Metallic Surfaces
The Journal of Physical Chemistry C, 2009We present a study of the atomic surface diffusion at low temperature of Cr adatoms deposited on Cu(100), Cu(111), and Au(111) surfaces. Time-dependent X-ray magnetic circular dichroism (XMCD), Monte Carlo simulations, and the Kimball−Shortley iterative method are used to evidence a mechanism of quantum tunneling involved in the Cr adatom surface ...
Bulou, Hervé +5 more
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Ultramicroscopy, 1989
Abstract The ballistic diffusion of the surface atoms after collisions with high-energy electrons is simulated numerically. The time for the ballistic diffusions of a monolayer under the bombardment of the high energy electron is estimated semi-quantitatively.
Y. Ma, L.D. Marks
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Abstract The ballistic diffusion of the surface atoms after collisions with high-energy electrons is simulated numerically. The time for the ballistic diffusions of a monolayer under the bombardment of the high energy electron is estimated semi-quantitatively.
Y. Ma, L.D. Marks
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2010
For the first time, this book unites the theory, experimental techniques and computational tools used to describe the diffusion of atoms, molecules and nanoparticles across metal surfaces. Starting with an outline of the formalism that describes diffusion on surfaces, the authors guide the reader through the principles of atomic movement, before moving
Grazyna Antczak, Gert Ehrlich
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For the first time, this book unites the theory, experimental techniques and computational tools used to describe the diffusion of atoms, molecules and nanoparticles across metal surfaces. Starting with an outline of the formalism that describes diffusion on surfaces, the authors guide the reader through the principles of atomic movement, before moving
Grazyna Antczak, Gert Ehrlich
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Proceedings, annual meeting, Electron Microscopy Society of America, 1986
There is growing interest in the use of electron microscopy to study surfaces. Unfortunately, the electron beam used to obtain images can also lead to surface modifications. Two processes can occur: electronic transitions which become converted into atomic motion leading either to preferential desorption of one species or athermal surface diffusion ...
Y. Ma, L. D. Marks
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There is growing interest in the use of electron microscopy to study surfaces. Unfortunately, the electron beam used to obtain images can also lead to surface modifications. Two processes can occur: electronic transitions which become converted into atomic motion leading either to preferential desorption of one species or athermal surface diffusion ...
Y. Ma, L. D. Marks
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Surface Diffusion on Inhomogeneous Surfaces
2009We address the issue of topology and diffusion on inhomogeneous surfaces by employing realistic interatomic potentials and a set of atomic-scale simulations tools, such us structural optimization and molecular dynamics. We focus on heterogeneous combinations of transition metals substrate/adsorbate systems, motivated by experimental evidence pointing ...
H. Bulou, C. Goyhenex, C. Massobrio
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Gas diffusion on graphene surfaces
Physical Chemistry Chemical Physics, 2017Gas diffusion on graphene surfaces is a two-dimensional gas behavior, controlled not by the hopping mechanism but by molecular collisions.
Chengzhen, Sun, Bofeng, Bai
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