Now showing items 37-47 of 47

  • Sorting of mesoscopic particles driven through periodic potential landscapes 

    Lacasta Palacio, Ana María; Khoury, M.; Sancho, Jose Maria; Lindenberg, Katja (World Scientific Publishing, 2006-10-01)
    Article
    Open Access
    Sorting of colloidal particles of different sizes is of importance in the transport and delivery of such particles in biological, materials science, and other technological contexts. A successful methodology involves the ...
  • Sorting on periodic surfaces 

    Lacasta Palacio, Ana María; Sancho, Jose Maria; Romero, A. H.; Lindenberg, K. (American Physical Society, 2005-04-29)
    Article
    Open Access
    Particles moving on crystalline surfaces and driven by external forces or ffow ffelds can acquire velocities along directions that deviate from that of the external force. This effect depends on characteristics of the ...
  • Study of a bimolecular annihilation process for coarsening reactants 

    Lacasta Palacio, Ana María; Sagués Mestre, Francesc; Sokolov, Igor M.; Sancho, Jose Maria (American Institute of Physics, 1999-04-30)
    Article
    Open Access
    We consider the spatio-temporal behavior of the A+B→0 bimolecular reaction in a system where both reactants tend to segregate into separated phases. Our study is based on the numerical solution of a pair of reaction–diffusion ...
  • The rich phenomenology of brownian particles in nonlinear potential landscapes 

    Sancho, Jose Maria; Lacasta Palacio, Ana María (2010-09)
    Article
    Open Access
    Abstract. Non-interacting brownian particles follows Langevin equations fullfiling fluctuation–dissipation relation between friction and thermal noise. Under a linear potential (constant force) Einstein found a relation ...
  • Towards gender equity in Spanish universities: a long and unpaved road 

    Sancho, Jose Maria; Creus, A. S.; Hemosilla, P. (Global University Network for Innovation (GUNI), 2008)
    Article
    Open Access
  • Transport and diffusion on a body-centered-cubic bcc(110) surface under a constant external force 

    Lindenberg, Katja; Lacasta Palacio, Ana María; Sancho, Jose Maria; Romero, Aldo H. (SPIE--The International Society for Optical Engineering, 2005-08-31)
    Conference lecture
    Restricted access - publisher's policy
    We present a numerical study of classical particles obeying a Langevin equation moving on a solid bcc(110) surface. The particles are subject to a two dimensional periodic and symmetric potential of rectangular symmetry ...
  • Transport and diffusion on crystalline surfaces under external forces 

    Lindenberg, Katja; Lacasta Palacio, Ana María; Sancho, Jose Maria; Romero, A. H. (IOP Publishing, 2005-01-31)
    Article
    Open Access
    We present a numerical study of classical particles obeying a Langevin equation and moving on a solid crystalline surface under an external force that may either be constant or modulated by periodic oscillations. We focus ...
  • Wave competition in excitable modulated media 

    Sendiña-Nadal, I.; Gómez Gesteira, Moncho; Pérez Muñuzuri, Vicente; Pérez Villar, Vicente; Armero, J.; Ramírez de la Piscina Millán, Laureano; Casademunt, Jaume; Sancho, Jose Maria; Sagués Mestre, Francesc (American Physical Society, 1997-12-31)
    Article
    Open Access
    The propagation of an initially planar front is studied within the framework of the photosensitive Belousov- Zhabotinsky reaction modulated by a smooth spatial variation of the local front velocity in the direction perpendicular ...
  • Wave propagation in a medium with disordered excitability 

    Sendiña-Nadal, I.; Pérez Muñuzuri, Alberto; Vives, D.; Pérez Muñuzuri, Vicente; Casademunt, Jaume; Ramírez de la Piscina Millán, Laureano; Sancho, Jose Maria; Sagués Mestre, Francesc (American Physical Society, 1998-06-30)
    Article
    Open Access
    The effect of quenched disorder on the propagation of autowaves in excitable media is studied both experimentally and numerically in relation to the light-sensitive Belousov-Zhabotinsky reaction. The spatial disorder is ...
  • Weak disorder in periodic potentials: anomalous transport and diffusion 

    Lindenberg, Katja; Sancho, Jose Maria; Khoury Arvelo, María José; Lacasta Palacio, Ana María (2012-03-31)
    Article
    Restricted access - publisher's policy
    Particles driven through a periodic potential by an external constant force are known to exhibit a pronounced peak of the diffusion around the critical deterministic force that defines the transition between locked and ...
  • Weak Disorder: Anomalous Transport and Diffusion Are Normal Yet Again 

    Khoury Arvelo, María José; Lacasta Palacio, Ana María; Sancho, Jose Maria; Lindenberg, Katja (2011-03)
    Article
    Open Access
    We carry out a detailed study of the motion of particles driven by a constant external force over a landscape consisting of a periodic potential corrugated by a small amount of spatial disorder. We observe anomalous ...