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We analyze response of a macromolecule near to a substrate; the substrate is tiled in the sequential and specific manner so that repeat units of the macromolecule may have different response on its adsorption in different directions onto…

软凝聚态物质 · 物理学 2020-09-21 Pramod Kumar Mishra

We study the equilibrium properties of a model for a binary mixture of catalytically-reactive monomers adsorbed on a two-dimensional substrate decorated by randomly placed catalytic bonds. The interacting $A$ and $B$ monomer species undergo…

统计力学 · 物理学 2009-11-11 M. N. Popescu , S. Dietrich , G. Oshanin

We study an autocatalytic system consisting of several interacting chemical species. We observe a strong dependence of the concentrations of the chemicals on the size of the system. This dependence is caused by the discrete nature of the…

生物物理 · 物理学 2007-05-23 Yuichi Togashi , Kunihiko Kaneko

Biphasic chemical reactions compartmentalized in small droplets offer advantages, such as streamlined procedures for chemical analysis, enhanced chemical reaction efficiency and high specificity of conversion. In this work, we…

软凝聚态物质 · 物理学 2020-07-10 Zhengxin Li , Akihito Kiyama , Hongbo Zeng , Detlef Lohse , Xuehua Zhang

The qualitative solvent- and temperature-dependent conformational behavior of a peptide in the proximity of solid substrates with different adsorption properties is investigated by means of a simple lattice model. The resulting pseudophase…

软凝聚态物质 · 物理学 2007-10-25 Michael Bachmann , Wolfhard Janke

Self-oscillations in some oxidation reactions on metal catalysts are associated with periodic oxidation/reduction of the catalyst surface. If the reaction proceeds in a flow reactor at atmospheric pressure, then the reaction dynamics is…

化学物理 · 物理学 2023-03-22 N. V. Peskov , M. M. Slinko

Autocatalysis underlies the ability of chemical and biochemical systems to replicate. Recently, Blokhuis et al. gave a stoechiometric definition of autocatalysis for reaction networks, stating the existence of a combination of reactions…

分子网络 · 定量生物学 2022-01-25 Jeremie Unterberger , Philippe Nghe

We investigate the effects of hyperbolic hydrodynamical mixing on the reaction kinetics of autocatalytic systems. Exact results are derived for the two dimensional open baker map as an underlying mixing dynamics for a two-component…

混沌动力学 · 物理学 2009-11-07 Z. Toroczkai , G. Karolyi , A. Pentek , T Tel

The kinetics of the diffusion-controlled chemical reactions A+A+...+A->0 that occur at catalytic centers periodically arranged along a straight line is considered. Modes of the behavior of reaction probability W(t) were studied at different…

统计力学 · 物理学 2009-11-07 A. A. Naidenov , S. K. Nechaev

The effect of diffusively correlated spatial fluctuations on the proliferation-extinction transition of autocatalytic agents is investigated numerically. Reactants adaptation to spatio-temporal active regions is shown to lead to…

统计力学 · 物理学 2009-11-11 Sasi Moalem , Nadav M. Shnerb

The structure of the pseudorapidity spectra of charged relativistic particles with beta > 0.7 measured in Au+Em and Pb+Em collisions at AGS and SPS energies are analyzed using Fourier transformation method and maximum entropy one. The…

We study analytically kinetics of an elementary bimolecular reaction scheme of the Langmuir-Hinshelwood type taking place on a d-dimensional catalytic substrate. We propose a general approach which takes into account explicitly the…

统计力学 · 物理学 2009-10-31 P. Argyrakis , S. F. Burlatsky , E. Clement , G. Oshanin

Astrochemical surface reactions are thought to be responsible for the formation of complex organic molecules, which are of potential importance for the origin of life. In a situation, when the chemical composition of dust surfaces is not…

化学物理 · 物理学 2022-11-09 Thomas K. Henning , Serge A. Krasnokutski

We consider the trapping reaction A + B -> B in space dimension d<=2. By formally eliminating the B particles from the problem we derive an effective dynamics for the A particles from which the survival probability of a given A particle and…

统计力学 · 物理学 2009-11-07 Alan J. Bray , Satya N. Majumdar , Richard A. Blythe

The role of dimensionality (Euclidean versus fractal), spatial extent, boundary effects and system topology on the efficiency of diffusion-reaction processes involving two simultaneously-diffusing reactants is analyzed. We present…

统计力学 · 物理学 2009-11-10 Jonathan L. Bentz , John J. Kozak , E. Abad , G. Nicolis

An autocatalytic reacting system with particles interacting at a finite distance is studied. We investigate the effects of the discrete-particle character of the model on properties like reaction rate, quenching phenomenon and front…

统计力学 · 物理学 2009-11-13 Stefano Berti , Cristobal Lopez , Davide Vergni , Angelo Vulpiani

We present a stochastic lattice theory describing the kinetic behavior of trapping reactions $A + B \to B$, in which both the $A$ and $B$ particles perform an independent stochastic motion on a regular hypercubic lattice. Upon an encounter…

统计力学 · 物理学 2009-11-10 M. Moreau , G. Oshanin , O. Benichou , M. Coppey

We study kinetics of diffusion-limited catalytically-activated $A + B \to B$ reactions taking place in three dimensional systems, in which an annihilation of diffusive $A$ particles by diffusive traps $B$ may happen only if the encounter of…

统计力学 · 物理学 2009-11-11 O. Bénichou , M. Coppey , M. Moerau , G. Oshanin

Chemical reactions on metal surfaces are important in various processes such as heterogeneous catalysis and nanostructure growth. At moderate or lower temperatures, these reactions generally follow the minimum energy path and temperature…

化学物理 · 物理学 2022-01-19 Pai Li , Xiongzhi Zeng , Zhenyu Li

We focus here on the thermodynamic properties of adsorbates formed by two-species $A+B \to \oslash$ reactions on a one-dimensional infinite lattice with heterogeneous "catalytic" properties. In our model hard-core $A$ and $B$ particles…

统计力学 · 物理学 2020-09-17 Dmytro Shapoval , Maxym Dudka , Olivier Bénichou , Gleb Oshanin