Browsing by Author "Romero, A. H."

Now showing items 1-9 of 9

    • A+B=0 reaction with different initial patterns 

      Sancho, Jose Maria; Romero, A. H.; Lindenberg, Katja; Sagués Mestre, Francesc; Reigada Sanz, R.; Lacasta Palacio, Ana María (American Chemical Society, 1996-10-10)
      Article
      Restricted access - publisher's policy
      We present a detailed study of the chemical reaction A + B f 0 in two dimensions for different initial distributions of reactants as characterized by the structure function. We argue that the long-wavelength components ...

    • Comment on "Diffusion on solif surfaces: anomalous is normal"-Reply 

      Sancho, Jose Maria; Lacasta Palacio, Ana María; Lindenberg, K.; Sokolov, Igor M.; Romero, A. H. (Americah Physical Society, 2005-05-12)
      Article
      Open Access

    • Diffusion on Solid Surface: anomalous is Normal 

      Sancho, Jose Maria; Lacasta Palacio, Ana María; Lindenberg, K.; Sokolov, Igor M.; Romero, A. H. (American Physical Society, 2004-06-23)
      Article
      Open Access
      We present a numerical study of classical particles diffusing on a solid surface. The particles’ motion is modeled by an underdamped Langevin equation with ordinary thermal noise. The particle-surface interaction is described ...

    • Langevin dynamics of A+A reactions in one dimension 

      Sancho, Jose Maria; Romero, A. H.; Lacasta Palacio, Ana María; Lindenberg, Katja (IOP Publishing, 2007-02-28)
      Article
      Open Access
      We propose a set of Langevin equations of motion together with a reaction rule for the study of binary reactions. Our scheme is designed to address this problem for arbitrary friction ° and temperature T. It easily ...

    • Modelization of surface diffusion of a molecular dimer 

      Romero, A. H.; Lacasta Palacio, Ana María; Sancho, Jose Maria (American Physical Society, 2004-05-20)
      Article
      Open Access
      A simple model for a dimer molecular diffusion on a crystalline surface, as a function of temperature, is presented. The dimer is formed by two particles coupled by a quadratic potential. The dimer diffusion is modeled by ...

    • Numerical study of A+A -> 0 and A+B ->0 reactions with inertia 

      Romero, A. H.; Lacasta Palacio, Ana María; Sancho, Jose Maria; Lindenberg, Katja (American Institute of Physics, 2007-11-30)
      Article
      Open Access
      Using numerical methods we study the annihilation reactions A + A → 0 and A + B → 0 in one and two dimensions in the presence of inertial contributions to the motion of the particles. The particles move freely following ...

    • 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 ...

    • 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 ...

    • Unsolved problems of surface diffusion at low friction 

      Lindenberg, K.; Lacasta Palacio, Ana María; Sancho Herrero, Jose Maria; Romero, A. H. (American Institute of Physics, 2005-11-30)
      Article
      Restricted access - publisher's policy
      Surface transport and diffusion at low damping reveals a number of unexplained or at least not systematically explained behaviors. Here we present two problems that require further study for a full understanding. One ...