Crystallization Close to the Glass Transition: Dynamic heterogeneities do not precede crystallization

Dorosz, Sven

Reference : Crystallization Close to the Glass Transition: Dynamic heterogeneities do not precede...


	Document type :	Scientific Presentations in Universities or Research Centers : Scientific presentation in universities or research centers
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/7283

Title :	Crystallization Close to the Glass Transition: Dynamic heterogeneities do not precede crystallization
Language :	English
Author, co-author :	Dorosz, Sven [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Publication date :	Jul-2013
Audience :	International
Event name :	XXV IUPAP International Conference on Statistical Physics
Event date :	22-26 July 2013
Event organizer :	Seoul National University
Event place (city) :	Seoul
Event country :	South Korea
Keywords :	[en] Glass Transition ; Hard Ellipsoids ; Dynamic Precursor
Abstract :	[en] We address the question whether a crystallization event can be predicted based on observations of the mobility distribution in a supersaturated melt. We have carried out computer simulations of overcompressed suspensions of hard monodisperse ellipsoids and observed their crystallization dynamics. The system was compressed very rapidly in order to reach the regime of slow, glass-like dynamics. We nd that, although particle dynamics become sub-diffusive and the intermediate scattering function clearly develops a shoulder, crystallization proceeds via the usual scenario: nucleation and growth for small supersaturations, spinodal decomposition for large supersaturations. In particular, we compared the mobility of the particles in those regions where crystallization set in with the mobility in the rest of the system. We did not find any signature in the dynamics that pointed towards the imminent crystallization event.
Research centres :	University of Luxembourg
Funders :	Fonds National de la Recherche - FnR
Name of the research project :	F1R-PHY-PFN-12FRPT > CORE 2012: 12/MS/3977209 FRPTEDC > > DOROSZ Sven
Target :	Researchers
Permalink :	http://hdl.handle.net/10993/7283

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