Showing 91 - 100 of 1,976
In this paper, a simple (2+1) solid-on-solid model of the epitaxial films growth based on random deposition followed by breaking particle–particle lateral bonds and particles surface diffusion is introduced. The influence of the critical number of the particle–particle lateral bonds z and...
Persistent link: https://www.econbiz.de/10011061169
The kink density and its influence on the growth velocity in the kinetic BCSOS model are studied using an exact finite-size analysis based on the transition matrix method and a kinetic Monte Carlo simulation at equilibrium and during growth. The bcc(001) surface fluctuates in the model through...
Persistent link: https://www.econbiz.de/10011061213
The influence of interaction and lattice coordination number on the reactivity and structure of adsorbed particles on a surface has been analysed for a reaction of a monomer and a dimer that dissociates, both of which are adsorbed on a surface and react. For the case without interaction there is...
Persistent link: https://www.econbiz.de/10011061722
Higher order clustering coefficients C(x) are introduced for random networks. The coefficients express probabilities that the shortest distance between any two nearest neighbours of a certain vertex i equals x, when one neglects all paths crossing the node i. Using C(x) we found that in the...
Persistent link: https://www.econbiz.de/10011062498
Tracer and collective diffusion of repulsively interacting particles adsorbed on a bivariate trap surface are studied by means of Monte Carlo modelling. Adsorption isotherms are obtained via simulations in the grand-canonical ensemble. Simulations in the canonical ensemble are used to mimick...
Persistent link: https://www.econbiz.de/10011062751
We generate a porous structure by computer simulation in (2+1) dimension using a bidisperse ballistic deposition model. Particles of two different sizes are deposited randomly creating a porous bulk bounded by a highly irregular upper surface. The structure of the interface is connected to the...
Persistent link: https://www.econbiz.de/10011062952
In this work we study the problem of tax evasion on a fully-connected population. For this purpose, we consider that the agents may be in three different states, namely honest tax payers, tax evaders and undecided, that are individuals in an intermediate class among honests and evaders. Every...
Persistent link: https://www.econbiz.de/10011062983
Molecular dynamics simulations were performed for eight different metals to calculate their constant volume heat capacity and latent heat in both liquid and solid phases. The atomic interaction for the simulations is taken as modeled by the n-body semi-empirical Gupta potential. The per atom...
Persistent link: https://www.econbiz.de/10011063052
A CO+NO→CO2+12N2 surface reaction model is studied by means of Monte Carlo simulations. The surface is represented by triangular and square lattices and the diffusion of N and lateral interaction between reactant nearest-neighbor adatoms is considered. The influence of diffusion of N to...
Persistent link: https://www.econbiz.de/10011063396
Grand canonical Monte Carlo simulations have been performed in order to study adsorption thermodynamics of pairwise interacting particles on fractal surfaces. Diffusion-limited aggregates (DLA) have been used as a substrate where interacting particles are adsorbed. In order to obtain aggregates...
Persistent link: https://www.econbiz.de/10011064047