Aging in a Laponite colloidal suspension: A Brownian dynamics simulation study (Articolo in rivista)

Type
Label
  • Aging in a Laponite colloidal suspension: A Brownian dynamics simulation study (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mossa, S; De Michele, C; Sciortino, F (2007)
    Aging in a Laponite colloidal suspension: A Brownian dynamics simulation study
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mossa, S; De Michele, C; Sciortino, F (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 126 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • European Synchrotron Radiat Facil, F-38043 Grenoble, France; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; INFM, I-35131 Padua, Italy; Univ Roma La Sapienza, SOFT Complex Dynam Struct Syst, I-00185 Rome, Italy (literal)
Titolo
  • Aging in a Laponite colloidal suspension: A Brownian dynamics simulation study (literal)
Abstract
  • The authors report Brownian dynamics simulation of the out-of-equilibrium dynamics (aging) in a colloidal suspension composed of rigid charged disks, one possible model for Laponite, a synthetic clay deeply investigated in the last few years by means of various experimental techniques. At variance with previous numerical investigations, mainly focusing on static structure and equilibrium dynamics, the authors explore the out-of-equilibrium aging dynamics. They analyze the wave vector and waiting time dependence of the dynamics, focusing on the single-particle and collective density fluctuations (intermediate scattering functions), the mean-squared displacement, and the rotational dynamics. Their findings confirm the complexity of the out-of-equilibrium dynamical behavior of this class of colloidal suspensions and suggest that an arrested disordered state driven by a repulsive Yukawa potential, i.e., a Wigner glass, can be observed in this model. (literal)
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