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Publications: Articles

Toutes :: 2009, 2011, 2013, 2014
Tous :: A, B, C, D, F, G, H, J, K, L, M, N, S, T 
Tous :: Hamdan, Hans, Henrion 
References par page: Mots clefs Voir les resumes


Audinot, J. -N., Hamdan, A., Grysan, P., Fleming, Y., Noel, C., Kosior, F., Henrion, G. and Belmonte, T.
SURFACE AND INTERFACE ANALYSIS, 46(1, SI):397-400 Audinot, JN (Reprint Author), Ctr Rech Publ Gabriel Lippmann, SAM Dept, 41 Rue Brill, L-4422 Belvaux, Luxembourg. Audinot, J. -N.; Grysan, P.; Fleming, Y., Ctr Rech Publ Gabriel Lippmann, SAM Dept, L-4422 Belvaux, Luxembourg. Hamdan, A.; Noel, C.; Kosior, F.; Henrion, G.; Belmonte, T., Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198,CS 50840, F-54011 Nancy, France.
ISSN: 0142-2421

Mots clefs: imaging; combinaison; characterization; plasma; nanosims; 3D

Resume: The discharge between a platinum electrode and different metallic monolayers on a silicon substrate produced sub-micrometric structures. The scanning electron microscope images showed the formation of craters with cones, holes, corona, and other exotic structures. The atomic force microscopy images allowed evaluating the depth and height of these complex structures together with the chemical information as determined by NanoSIMS imaging. The plasma impacts locally removed the mono-layer and the bilayer down to the bare silicon substrate. In order to convert the acquired NanoSIMS images into a true three-dimensional distribution of the analyzed species, the SIMS images are overlapped with the corresponding atomic force microscopy images of the same probed area. This analysis method allows a visualization of a complex 3D structure and helps understand the formation mechanisms of the streamer impact. Copyright (c) 2014 John Wiley & Sons, Ltd.

Equipe: Centre de Compétences : ERMIONE informatique et calcul

Bellot, Jean-Pierre, De Felice, Valerio, Dussoubs, Bernard, Jardy, Alain and Hans, Stephane
ISSN: 1073-5615

Resume: Gas-stirring ladle treatment of liquid metal has been pointed out for a long time as the processing stage is mainly responsible for the inclusion population of specialty steels. A steel ladle is a complex three-phase reactor, where strongly dispersed inclusions are transported by the turbulent liquid metal/bubbles flow. We have coupled a population balance model with CFD in order to simulate the mechanisms of transport, aggregation, flotation, and surface entrapment of inclusions. The simulation results, when applied to an industrial gas-stirring ladle operation, show the efficiency of this modeling approach and allow us to compare the respective roles of these mechanisms on the inclusion removal rate. The comparison with literature reporting data emphasizes the good prediction of deoxidating rate of the ladle. On parallel, a simplified zero-dimensional model has been set-up incorporating the same kinetics law for the aggregation rate and all the removal mechanisms. A particular attention has been paid on the averaging method of the hydrodynamics parameters introduced in the flotation and kinetics kernels.

Equipe: Centre de Compétences : ERMIONE informatique et calcul

Belmonte, T., Hamdan, A., Kosior, F., Noel, C. and Henrion, G.
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 47(22, SI) Belmonte, T (Reprint Author), Univ Lorraine, CNRS, Dept CP2S, Inst Jean Lamour, Parc Saurupt,CS 50840, F-54011 Nancy, France. Belmonte, T.; Hamdan, A.; Kosior, F.; Noel, C.; Henrion, G., Univ Lorraine, CNRS, Dept CP2S, Inst Jean Lamour, F-54011 Nancy, France.
ISSN: 0022-3727

Mots clefs: discharges in liquids; plasma-surface interactions; nanoparticle synthesis

Resume: Discharge-surface interaction in liquids includes many phenomena which are reviewed in this work. This is used to examine results in the area of nanoparticle synthesis and to propose a general sketch of formation mechanisms.

Equipe: Centre de Compétences : ERMIONE informatique et calcul

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