DLCA and Langevin Dynamics Approaches of Sol Gel Transition: a comparison via the fractal dimension Auteur(s): Olivi-Tran N., Hsieh K., Lallet F. (Article) Publié: Fractals, vol. 16 p.361-365 (2008) Ref HAL: hal-00344224_v1 DOI: 10.1142/S0218348X08004071 WoS: 000261381900007 Exporter : BibTex | endNote 1 Citation Résumé: We compared two models of aggregation which represent the sol gel transition of base-catalyzed colloidal gels. The two models are a Langevin dynamics approach of this transition and the DLCA model (diffusion limited cluster-cluster aggregation). For large numbers of particles, we compared the fractal dimension of the gelling network via the structure factor of the bulk. We observed that the Langevin dynamics approach did give more realistic fractal dimension than the DLCA model. This is due to the fact that Langevin dynamics evolves as a function of a physical time. |