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In 1993/94, ultrabright synchrotron sources of soft X-rays have been commissioned in Taiwan, in Italy and in the USA - and another one is forthcoming in South Korea, The novel field of photoelectron spectromicroscopy is one of the most likely to take advan ...
By using embedded-atom-method interatomic potentials and molecular-dynamics simulations, we study the collision of a single Ag/sub 7/ cluster on the Pd(100) substrate, at impact energies in the direction perpendicular to the (100) surface E/sub 1/=20 eV (2 ...
In the framework of rockfall trajectory modelling, the bouncing phenomenon occurring when a rock block impacts with the slope surface is the most difficult to predict, owing to its complexity and its very limited understanding. Up to now, the rebound is co ...
We perform detailed finite element simulations of impact of metallic plates by spherical particles over a range of impact angles and speeds with a view to develop an insight into the fundamental mechanisms underlying solid-particle erosion. The particular ...
We present powder blasting as a new technology for the realization of Micro Electro-Mechanical Systems (MEMS). The technique is base don the erosion of a masked substrate by a high velocity powder beam. We study the erosion rate of the process using glass ...
We study size-selected deposition of Ag/sub 19//sup +/ clusters on Pd(100) at total kinetic energies of 20 and 95 eV using thermal energy atom scattering and molecular-dynamics simulations. Contrary to the case of Ag/sub 7/ where fragmentation is crucial t ...
The formation dynamics of charged excitons is studied in CdTe-based quantum wells by picosecond time-resolved photoluminescence. The formation time is obtained by an analysis of temporal behavior of photoluminescence signal after excitation in resonance wi ...
Variable-temperature scanning tunneling microscopy was used to study the effect of kinetic cluster energy and rare-gas buffer layers on the deposition process of size-selected silver nanoclusters on a platinum(111) surface. Clusters with impact energies of ...
On présente généralement le champ de l'étude environnementale par le biais de l'une des deux approches générales suivantes. La première examine les effets de l'homme sur l'environnement, avec pour objectif d'identifier les modifications d'origine anthropiq ...
We study the deposition of Ag ions, and size selected Ag/sub 7/ and Ag/sub 19/ cluster ions on Pd(100) at total kinetic energies of 20 eV and 95 eV using thermal energy atom scattering and molecular dynamics simulations. We find that at all energies Ag ato ...
