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Configurational entropy of adsorbed particles on two-dimensional heterogeneous surfaces

Romá, F.; Ramirez-Pastor, A.J. - In: Physica A: Statistical Mechanics and its Applications 328 (2003) 3, pp. 513-524

The configurational entropy of repulsive interacting particles adsorbed on heterogeneous surfaces is studied by combining Monte Carlo simulation and thermodynamic integration method. The substrate is represented by a bivariate lattice characterized by l×l patches of weak and strong adsorbing...

Persistent link: https://www.econbiz.de/10011064513

Adsorption of dimers on heterogeneous surfaces: scaling behavior for the adsorption isotherms

González, J.E.; Ramirez-Pastor, A.J. - In: Physica A: Statistical Mechanics and its Applications 311 (2002) 3, pp. 339-352

The localized monolayer adsorption of homonuclear dimers on heterogeneous surfaces with simple topographies is analyzed … triangular lattices. The adsorption process is monitored by following the adsorption isotherms. The scope of the present work is … to determine, via MC simulation and a theoretical model, the general properties of the adsorption of non …

Persistent link: https://www.econbiz.de/10011061281

Percolation of dimers irreversibly adsorbed on heterogeneous surfaces

Gimenez, M.C.; Ramirez-Pastor, A.J. - In: Physica A: Statistical Mechanics and its Applications 421 (2015) C, pp. 261-268

simultaneously) are irreversibly adsorbed on the lattice. By means of random adsorption simulations and finite-size scaling analysis …

Persistent link: https://www.econbiz.de/10011194067

Configurational entropy of adsorbed rigid rods: Theory and Monte Carlo simulations

Centres, P.M.; Ramirez-Pastor, A.J. - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 10, pp. 2001-2019

theoretical models to treat k-mer adsorption on two-dimensional lattices have been discussed: (i) the Flory–Huggins approximation …

Persistent link: https://www.econbiz.de/10010872341

Tracer diffusion of dimers on correlated heterogeneous surfaces

Bulnes, F.; Bustingorry, S.; Ramirez-Pastor, A.J. - In: Physica A: Statistical Mechanics and its Applications 330 (2003) 3, pp. 409-414

The diffusion of a single dimer adsorbed on highly correlated heterogeneous substrates is studied through Monte Carlo simulations. The topography has been characterized by patches of weak and strong adsorbing sites, arranged in a chessboard-like ordered structure. The time behavior of the...

Persistent link: https://www.econbiz.de/10010589962

Adsorption in a model of interacting branched polymers on a fractal lattice

Vujić, Dragan; Knežević, Milan - In: Physica A: Statistical Mechanics and its Applications 260 (1998) 1, pp. 1-10

We have studied a model of self-interacting branched polymers on the three-dimensional Sierpinski gasket lattice, in the presence of an attractive impenetrable fractal boundary. Using an exact renoramlization group approach, we have determined the phase diagram boundaries of this model, and its...

Persistent link: https://www.econbiz.de/10011057087

Adsorption thermodynamics of interacting particles on diffusion-limited aggregates

Nazzarro, M.; Nieto, F.; Ramirez-Pastor, A.J. - In: Physica A: Statistical Mechanics and its Applications 331 (2004) 3, pp. 517-530

Grand canonical Monte Carlo simulations have been performed in order to study adsorption thermodynamics of pairwise … strongly correlated surfaces. Adsorption isotherm, adsorption energy and differential heat of adsorption were calculated for … case of adsorption on fractal structures. The influence of ordered structures on thermodynamic quantities associated to the …

Persistent link: https://www.econbiz.de/10011064047

Diffusion-limited aggregates grown on nonuniform substrates

Cornette, V.; Centres, P.M.; Ramirez-Pastor, A.J.; Nieto, F. - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 23, pp. 5879-5887

In the present paper, patterns of diffusion-limited aggregation (DLA) grown on nonuniform substrates are investigated by means of Monte Carlo simulations. We consider a nonuniform substrate as the largest percolation cluster of dropped particles with different structures and forms that occupy...

Persistent link: https://www.econbiz.de/10011064121

Phase behavior and fluid–solid surface tension of argon in slit pores and carbon nanotubes

Hamada, Yoshinobu; Koga, Kenichiro; Tanaka, Hideki - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 12, pp. 2289-2298

. Effects of the pore size on pressure–tensor components, the fluid–wall surface tension, and the adsorption are also compared …-well depth of the fluid-pore interaction, and the adsorption isotherms overlap each other almost completely for narrow pores and …

Persistent link: https://www.econbiz.de/10010872510

Differential heat of adsorption in the presence of an order–disorder phase transition

Ramirez-Pastor, A.J; Bulnes, F - In: Physica A: Statistical Mechanics and its Applications 283 (2000) 1, pp. 198-203

We studied the coverage dependence of the differential heat of adsorption in the presence of an order–disorder phase … theoretical approaches. The differential heat of adsorption appears as a sensitive quantity to the phase transition, allowing a …

Persistent link: https://www.econbiz.de/10010589310

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