Browsing by Author "Lindenberg, Katja"

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, 19961010)
Article
Restricted access  publisher's policyWe 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 longwavelength components ... 
Escape over a potential barrier driven by colored noise: large but finite correlation time
de la Rubia, Francisco Javier; PeacockLópez, E.; Tsironis, G P; Lindenberg, Katja; Ramírez de la Piscina Millán, Laureano; Sancho, Jose Maria (1988)
Article
Open AccessThe recent theory of Tsironis and Grigolini for the mean firstpassage time from one metastable state to another of a bistable potential for long correlation times of the noise is extended to large but finite correlation times. 
Firstpassage time in a bistable potential with colored noise
Ramírez de la Piscina Millán, Laureano; Sancho, Jose Maria; de la Rubia, Francisco Javier; Lindenberg, Katja; Tsironis, G P (19890815)
Article
Open AccessA precise digital simulation of a bistable system under the effect of colored noise is carried out. A set of data for the mean firstpassage time is obtained. The results are interpreted and compared with presently available ... 
Langevin dynamics of A+A reactions in one dimension
Sancho, Jose Maria; Romero, A. H.; Lacasta Palacio, Ana María; Lindenberg, Katja (IOP Publishing, 20070228)
Article
Open AccessWe 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 ... 
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, 20071130)
Article
Open AccessUsing 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 of mesoscopic particles driven through periodic potential landscapes
Lacasta Palacio, Ana María; Khoury, M.; Sancho, Jose Maria; Lindenberg, Katja (World Scientific Publishing, 20061001)
Article
Open AccessSorting 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 ... 
Speeding chemical reactions by focusing
Lacasta Palacio, Ana María; Ramírez de la Piscina Millán, Laureano; Sancho Herrero, José María; Lindenberg, Katja (20130411)
Article
Open AccessWe present numerical results for a chemical reaction of colloidal particles which are transported by a laminar fluid and are focused by periodic obstacles in such a way that the two components are well mixed and consequently ... 
Transport and diffusion on a bodycenteredcubic bcc(110) surface under a constant external force
Lindenberg, Katja; Lacasta Palacio, Ana María; Sancho, Jose Maria; Romero, Aldo H. (SPIEThe International Society for Optical Engineering, 20050831)
Conference lecture
Restricted access  publisher's policyWe 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, 20050131)
Article
Open AccessWe 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 ... 
Weak disorder in periodic potentials: anomalous transport and diffusion
Lindenberg, Katja; Sancho, Jose Maria; Khoury Arvelo, María José; Lacasta Palacio, Ana María (20120331)
Article
Restricted access  publisher's policyParticles 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 (201103)
Article
Open AccessWe 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 ...