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Dynamics of surface steps
Szalma, F; Selke, W; Fischer, S - In: Physica A: Statistical Mechanics and its Applications 294 (2001) 3, pp. 313-322
In the framework of SOS models, the dynamics of isolated and pairs of surface steps of monoatomic height is studied, for step–edge diffusion and for evaporation kinetics, using Monte Carlo techniques. In particular, various interesting crossover phenomena are identified. Simulational results...
Persistent link: https://www.econbiz.de/10010873172
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Creep at low temperatures: unzipping of dislocations, inertia, and criticality processes
Vigueras-Santiago, E.; Krokhin, A.A.; Mckrell, T.; … - In: Physica A: Statistical Mechanics and its Applications 258 (1998) 1, pp. 11-16
We consider creep processes in plastically deformed materials as a critical process such as proposed by Zaitsev (Physica A 189 (1992) 411). We give arguments that the low-temperature creep rate necessarily has two different modes. During the first (fast) stage of stress relaxation, dislocations...
Persistent link: https://www.econbiz.de/10010872723
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Interfacial crack front wandering: influence of quenched noise correlations
Schmittbuhl, Jean; Vilotte, Jean-Pierre - In: Physica A: Statistical Mechanics and its Applications 270 (1999) 1, pp. 42-56
We discuss the influence of spatially correlated noise on the wandering exponent of the crack-front line during slow in-plane crack propagation. For a uniform noise, the wandering exponent in the stastically stationary regime is .35±0.02, while the dynamic exponent is z=0.75±0.02. For...
Persistent link: https://www.econbiz.de/10011060415
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Weak pinning: surface growth in the presence of a defect
Slanina, F.; Kotrla, M. - In: Physica A: Statistical Mechanics and its Applications 256 (1998) 1, pp. 1-17
case of tilted surfaces we observe a phase transition between weak and strong pinning and the exponent in the weak pinning …
Persistent link: https://www.econbiz.de/10011061679
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Ballistic motion in quenched random environments
Jespersen, Sune; Fogedby, Hans C. - In: Physica A: Statistical Mechanics and its Applications 297 (2001) 3, pp. 389-400
We study the motion of a massive particle in a quenched random environment at zero temperature. The distribution of particle positions is investigated numerically and special focus is placed on the mean stopping distance and its fluctuations. We apply a scaling analysis in order to obtain...
Persistent link: https://www.econbiz.de/10010591042
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Wetting and drying of a rigid substrate under variation of the microscopic details
Bruin, C. - In: Physica A: Statistical Mechanics and its Applications 251 (1998) 1, pp. 81-94
Wetting and drying of a rigid substrate by a Lennard–Jones fluid in molecular dynamics simulations is reported. The … alike, but inconsistencies are found in the solid–vapour surface tension on approach of the wetting transition and for the …
Persistent link: https://www.econbiz.de/10010871679
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Rigorous results on wetting, rough and heterogeneous substrates
Miracle-Solé, Salvador - In: Physica A: Statistical Mechanics and its Applications 314 (2002) 1, pp. 299-303
Some rigorous results are reported which concern the microscopic theory of wetting. A recent new study on a generalized …
Persistent link: https://www.econbiz.de/10010872149
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Interplay of wetting and phase separation at surfaces
Puri, Sanjay - In: Physica A: Statistical Mechanics and its Applications 384 (2007) 1, pp. 100-107
We review our understanding of surface-directed spinodal decomposition (SDSD), i.e., the interplay of wetting and phase … separation in an unstable AB mixture placed in contact with a wetting surface. In this context, we present results for two …
Persistent link: https://www.econbiz.de/10010872431
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Interfacial wetting in the 4-state Potts model: A cluster approach
Paraskevaidis, Costas E.; Papatriantafillou, Costas; … - In: Physica A: Statistical Mechanics and its Applications 375 (2007) 2, pp. 537-545
-state Potts models. We apply this formalism to the wetting by the disordered phase of the interface between two bulk phases. For … the case q=4 we obtain the full interfacial profiles, provide an estimate for the wetting temperature and verify the … predicted logarithmic divergence of the wetting layer. …
Persistent link: https://www.econbiz.de/10010872544
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Wetting phase transitions and critical phenomena in condensed matter
Indekeu, J.O. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 20, pp. 4332-4359
Equilibrium wetting phase transitions and critical phenomena are discussed from a phenomenological point of view. The … ubiquitous character of the wetting phase transition is illustrated through its occurrence in a variety of condensed matter …-phase contact line and its line tension, at wetting, is an example of a fundamental problem in this field on which much progress has …
Persistent link: https://www.econbiz.de/10010873565