http://publicationslist.org/data/r.rozas/atom.xmlRoberto Rozas's Publications ListRoberto Rozashttp://publicationslist.org/r.rozas$basepathfavicon.icoRecent additions to Roberto Rozas's PublicationsList.org pagehttp://publicationslist.org/publications.png2008-05-25T23:16:40Zhttp://publicationslist.org/r.rozas/refid12008-05-25T21:02:08ZEstimation of the liquid-vapor spinodal from interfacial properties obtained from molecular dynamics and lattice Boltzmann simulations. Interfacial pressure and density profiles are calculated from molecular dynamics and lattice Boltzmann simulations of a liquid film in equilibrium with its vapor. The set of local values of tangential pressure and density along an interface exhibits a van der Waals-type loop; starting from the stable vapor bulk phase one passes through metastable and unstable states to the stable liquid bulk phase...<br/><br/>Imre A. R., Mayer G., Házi G., Rozas R. and Kraska T. (2008) <i>Journal of Chemical Physics</i> 128: 114708<br/>http://publicationslist.org/r.rozas/refid32008-05-25T22:22:33ZStructure formation of metallic nano-particles in the vapour phase and in disperse materials.The formation of metal nano-particles in a homogeneous vapour phase and in a polymer matrix is investigated by molecular dynamics simulations. The different types of particle formation and growth are investigated specially with respect to the formation of atomic structure and particle morphology. We find that the structure formation proceeds via liquid-like and icosahedral structures to a close-pa...<br/><br/>Rozas R., Lümmen N. and Kraska T. (2007) <i>European Physical Journal Special Topics</i> 149: 57<br/>http://publicationslist.org/r.rozas/refid22008-05-25T22:16:55ZMolecular dynamics simulation of heterogeneous nucleation and growth of argon at polyethylene films. Heterogeneous nucleation and growth of supersaturated argon vapor at polyethylene surfaces is investigated using molecular dynamics simulation. The specific system is chosen as model for high wettable systems. The simulations are conducted in a nonequilibrium ensemble which includes heat transfer during the condensation process. Temporary density and temperature gradients are developed in the vapo...<br/><br/>Rozas R. and Kraska T. (2007) <i>Journal of Physical Chemistry C</i> 111: 15784<br/>http://publicationslist.org/r.rozas/refid42008-05-25T22:27:04ZFormation of metal nanoparticles on polymer films investigated by molecular dynamics simulations.
The formation of platinum nano-particles on a polyethylene substrate is investigated by molecular dynamics simulation. As initial configuration, a polymer film is put in contact with a supersaturated platinum vapour. Argon is added in the vapour phase as carrier gas that transfers heat from the vapour phase to the polymer surface. The simulations provide a deep insight into cluster formation at th...<br/><br/>Kraska T. and Rozas R. (2007) <i>Nanotechnology</i> 18: 165706<br/>http://publicationslist.org/r.rozas/refid52008-05-25T22:50:19ZPermeability-porosity relationship from a geometrical model of shrinking and Lattice-Boltzmann and Monte Carlo simulations of flow in two-dimensional pore networks. For a broad range of applications, the most important transport property of porous media is permeability. Here we calculate the permeability of pore network approximations of porous media as simple diagenetic or shrinking processes reduces their pore spaces. We use a simple random bond-shrinkage mechanism by which porosity is decreased; a tube is selected at random and its radius is reduced by a f...<br/><br/>Quispe J. R., Rozas R. and Toledo P. G. (2005) <i>Chemical Engineering Journal</i> 111: 225-236<br/>http://publicationslist.org/r.rozas/refid82008-05-25T23:10:51ZInstallation und Betrieb eines Beowulf Clusters in der Physikalischen Chemie.
Der nachfolgende Artikel beschreibt die Installation eines Linux-Clusters, zuerst aus Sicht der Administratoren Thomas Lange und Constantin Hellweg. Thomas Lange ist Systemadministrator im Institut für Informatik, seit drei Jahren Debian-Developer und Autor der Software Fully Automatic Installation (FAI). Constantin Hellweg ist studentische Hilfskraft am Institut für Informatik und seit Beginn 2...<br/><br/>Kraska T., Fischer B., Lümmen N. and Rozas R. (2004) 100<br/>http://publicationslist.org/r.rozas/refid72008-05-25T23:03:12ZPermeability-porosity relationship from a geometrical model of shrinking and flow simulations in two-dimensional pore networks.
Rozas R., Quispe J. and Toledo P. G. (2004) <i>Proceedings of the International Conference on Applications of Porous Media ICAPM 2004</i> 15<br/>http://publicationslist.org/r.rozas/refid62008-05-25T22:56:23ZPore blocking and permeability reduction in cross-flow microfiltration.,Particle capture at membrane surfaces in cross-flow microfiltration is studied both experimentally and computationally to better understand permeability reduction as function of membrane pore sizes and particle sizes and concentrations. Microfiltration experiments for various bentonite suspension concentrations are conducted in commercial polysulphone membranes of nominal pore sizes 2 and 0.2 μm...<br/><br/>Seminario L., Rozas R., Bórquez R. and Toledo P. G. (2002) <i>Journal of Membrane Science</i> 209: 121-142<br/>http://publicationslist.org/r.rozas/refid92008-05-25T23:16:16ZOn the porosity-permeability relationship of porous media with evolving porosity.
Rozas R., Quispe J. and Toledo P. G. (2000) <i>XXI IMPC International Mineral Processing Congress</i> <br/>