Accueil >
Production scientifique
![](plugins/kitcnrs-5.4.1/css/charte-2/img/boite-outils/icones/postdco.gif)
![](https://hal.archives-ouvertes.fr/img/tamponHal.png)
(307) Production(s) de KOB W.
![--------------------](plugins/aigle//images/filet-couleur.gif)
|
|
Spontaneous and induced dynamic correlations in glass formers. II. Model calculations and comparison to numerical simulations
Auteur(s): Berthier L., Biroli G., Bouchaud J.P., Kob W., Miyazaki K., Reichman D.R.
(Article) Publié:
The Journal Of Chemical Physics, vol. 126 p.184504 (2007)
Résumé: We study in detail the predictions of various theoretical approaches, in particular, mode-coupling theory (MCT) and kinetically constrained models (KCMs), concerning the time, temperature, and wave vector dependence of multipoint correlation functions that quantify the strength of both induced and spontaneous dynamical fluctuations. We also discuss the precise predictions of MCT concerning the statistical ensemble and microscopic dynamics dependence of these multipoint correlation functions. These predictions are compared to simulations of model fragile and strong glass-forming liquids. Overall, MCT fares quite well in the fragile case, in particular, explaining the observed crucial role of the statistical ensemble and microscopic dynamics, while MCT predictions do not seem to hold in the strong case. KCMs provide a simplified framework for understanding how these multipoint correlation functions may encode dynamic correlations in glassy materials. However, our analysis highlights important unresolved questions concerning the application of KCMs to supercooled liquids. (C) 2007 American Institute of Physics.
|
![--------------------](plugins/aigle//images/filet-couleur.gif)
![.](plugins/aigle//images/more_null_blue.png) |
On the Nature of the Alpha Relaxation of a Simple Glass-Former
Auteur(s): Kob W.
Conference: Glasses meet Glasses : Reconciling Views (Lyon, France, FR, 2007-06-13)
|
![--------------------](plugins/aigle//images/filet-couleur.gif)
![.](plugins/aigle//images/more_null_blue.png) |
Heterogeneous diffusion in a reversible gel
Auteur(s): Kob W.
Conference: Soft, Complex and Biological Matter (Palermo, Italy, FR, 2007-08-15)
|
![--------------------](plugins/aigle//images/filet-couleur.gif)
![.](plugins/aigle//images/more_null_blue.png) |
Static and Dynamic Properties of Gels
Auteur(s): Kob W.
(Séminaires)
DLR (Koeln, Allemagne, FR), 2007-09-18 |
![--------------------](plugins/aigle//images/filet-couleur.gif)
![.](plugins/aigle//images/more_null_blue.png) |
Virtual experiments : Combining realistic neutron scatering instrument and sample simulations
Auteur(s): Hugouvieux Virginie, Farhi E., Johnson M., Kob W.
(Article) Publié:
Genome Biology, vol. Submitted p. (2006)
|
![--------------------](plugins/aigle//images/filet-couleur.gif)
|
|
Network formation and relaxation dynamics in a new model for colloidal gelation ![doi link](plugins/aigle//images/ext_link.jpg)
Auteur(s): Del gado Emanuela, Kob W.
(Article) Publié:
Journal Of Non-Newtonian Fluid Mechanics, vol. 149 p.28-33 (2008)
DOI: 10.1016/j.jnnfm.2007.06.007
WoS: 000253553400005
18 Citations
Résumé: We investigate the gel formation from the equilibrium sol phase in a simple model that has the characteristics of (colloidal) gel-forming systems at a finite temperature. At low volume fraction and low temperatures, particles are linked by long-living bonds and form an open percolating network. By means of molecular dynamics simulations, we study the lifetime of bonds and nodes of the gel network in order to relate these quantities to the complex relaxation dynamics observed. (c) 2007 Elsevier B.V. All rights reserved.
|
![--------------------](plugins/aigle//images/filet-couleur.gif)
![.](plugins/aigle//images/more_null_blue.png) |
Band gap states in hydrous silica glass : The role of the local environment
Auteur(s): Benoit Magalie, Poehlmann Marcus, Kob W.
(Article) Publié:
Genome Biology, vol. submitted p. (2006)
|