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Nucleation in Hard Spheres Systems
Dorosz, Sven
2012
 

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Keywords :
Nucleation; Template; Hard Spheres
Abstract :
[en] I will be discussing the nucleation process in a system composed of mono-disperse hard spheres initially in an over-compressed fluid state. Molecular dynamics simulations are presented for the homogeneous system and the dynamics and structure of the forming nucleus including the corresponding nucleation rates are discussed. In comparison to the studied homogenous nucleation event we will extend this system and introduce a substrate to study its influence onto nucleation within the fluid. In this case the substrate is made up of the same type of spheres held fixed in space throughout the simulation process on a triangular lattice modeling a crystalline surface. In general heterogenous nucleation, due to surfaces, walls as well as confinement are of great importancein experiments of colloidal suspensionsbecause strong effects are observed. In our case the substrates influence is studied by varying the substrate lattice constant as well as the fluid density. We observe qualitatively different dynamical regimes that will be discussed in detail.
Research center :
University of Luxembourg
Disciplines :
Physics
Author, co-author :
Dorosz, Sven ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Language :
English
Title :
Nucleation in Hard Spheres Systems
Publication date :
07 February 2012
Event name :
Seminar des Graduiertenkollegs
Event organizer :
Department of Physics, Saarland University
Event place :
Saarbruecken, Germany
Event date :
7 February 2012
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 30 September 2013

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