• Collisionless relaxation in gravitacional systems from violent relaxation to gravothermal collapse 

      Levin, Yan; Pakter, Renato; Rizzato, Felipe Barbedo (2008) [Artigo de periódico]
      Theory and simulations are used to study collisionless relaxation of a gravitational N-body system. It is shown that when the initial one-particle distribution function satisfies the virial condition—potential energy is ...
    • Geometry of phase separation 

      Sicilia, Alberto; Sarrazin, Yoann; Arenzon, Jeferson Jacob; Bray, Alan J.; Cugliandolo, Leticia F. (2009) [Artigo de periódico]
      We study the domain geometry during spinodal decomposition of a 50:50 binary mixture in two dimensions. Extending arguments developed to treat nonconserved coarsening, we obtain approximate analytic results for the ...
    • Modelos dinâmicos para segregação granular 

      Fernandes, Heitor Carpes Marques (2003) [Dissertação]
      Materiais granulares, quando submetidos a vibrações, apresentam o fenômeno de compactação lenta, durante o qual o volume livre disponível aos grãos diminui, e sua mobilidade decai a zero. Nesta situação espera-se o fenômeno ...
    • Nova abordagem para modelagem da formação de membranas poliméricas por inversão de fases 

      Padilha Júnior, Erlí José (2023) [Tese]
      A modelagem numérica da formação de membranas poliméricas via precipitação por imersão tem importância fundamental para prever a morfologia das estruturas obtidas. Neste trabalho, uma nova abordagem do modelo de campo de ...
    • Phase separation in Cu/sub 90/Co/sub 10/ high-magnetoresistance materials 

      Miranda, Marines Grande Malcum; Estevez Rams, Ernesto; Martinez Pino, Gerardo Guido; Baibich, Mario Norberto (2003) [Artigo de periódico]
      The relation between giant magnetoresistance ~GMR! and phase separated nanostructures in Cu90Co10 is studied using magnetotransport measurements together with transmission electron microscopy and x-ray microanalysis. The ...
    • A self-consistent renormalized jellium approach for calculating structural and thermodynamic properties of charge stabilized colloidal suspensions 

      Colla, Thiago Escobar; Levin, Yan; Trizac, Emmanuel (2009) [Artigo de periódico]
      An approach is proposed which allows to self-consistently calculate the structural and the thermodynamic properties of highly charged aqueous colloidal suspensions. The method is based on the renormalized jellium model ...
    • The renormalized jellium model for spherical and cylindrical colloids 

      Pianegonda, Salete; Trizac, Emmanuel; Levin, Yan (2007) [Artigo de periódico]
      Starting from a mean-field description for a dispersion of highly charged spherical or (parallel) rodlike colloids, we introduce the simplification of a homogeneous background to include the contribution of other polyions ...