The glass transition in a simple model glass: numerical simulations
نویسنده
چکیده
In order to improve our understanding of the glass transition we performed constant-energy molecular dynamics simulations on a soft-sphere system quenched from the liquid state to zero temperature. The temperature dependence of static (radial pair distribution function) and dynamic quantities (self-diiusion constant) has been investigated together with the temperature evolution of relevant structural properties deduced from the Delaunay-Voronoi tessellation of these samples. This study permits to shed new light on the structural freezing below the glass transition temperature and the evolution of the local structure through the transition.
منابع مشابه
Numerical study of the glass-glass transition in short-ranged attractive colloids
We report extensive numerical simulations in the glass region for a simple model of short-ranged attractive colloids, the square well model. We investigate the behavior of the density autocorrelation function and of the static structure factor in the region of temperatures and packing fractions where a glass-glass transition is expected according to theoretical predictions. We strengthen our ob...
متن کاملRelaxation Spectra at the Glass Transition: Origin of Power Laws
We propose a simple dynamical model of the glass transition based on the results from a non-randomly frustrated spin model which is known to form a glassy state below a characteristic quench temperature. The model is characterized by a multi-valleyed free-energy surface which is modulated by an overall curvature. The transition associated with the vanishing of this overall curvature is reminisc...
متن کاملProbing a liquid to glass transition in equilibrium.
We use computer simulations to investigate the static properties of a simple glass-forming fluid in which the positions of a finite fraction of the particles have been frozen. By probing the equilibrium statistics of the overlap between independent configurations of the liquid, we find strong evidence that this random pinning induces a glass transition. At low temperatures, our numerical findin...
متن کاملOffice Buildings Glass Facades Excitation under Hot and Dry Climates: A Numerical and Experimental Study
The purpose of this research is to reviews the thermal comfort condition of full glass south view official buildings in warm and dry zones and conclusion of buildings disadvantage in thermal waste and after all presenting an ideal plan with appropriate solution. To reach to that goal first of all the effective factors on wasting energy were reviewed then the temperature testing with thermometer...
متن کاملExperimental and Numerical Study of Energy Absorption Capacity of Glass Reinforced SCC Beams
Various experimental studies have been carried out on glass fiber reinforced concrete (GFRC), but in limited studies, the behavior of this type of concrete is evaluated using finite element method (FEM). In this study an analysis model is presented for predicting energy absorption capacity of glass fiber reinforced self-compacting concrete (GFRCSCC) beams and the results are compared with exper...
متن کامل