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Interfaces and grain boundaries of lamellar phases

Villain-Guillot, S; Netz, Roland R; Andelman, David; … - In: Physica A: Statistical Mechanics and its Applications 249 (1998) 1, pp. 285-292

Interfaces between lamellar and disordered phases, and grain boundaries within lamellar phases, are investigated …

Persistent link: https://www.econbiz.de/10010874335

Fluctuations and instabilities of model amphiphile interfaces

Varea, C.; Robledo, A. - In: Physica A: Statistical Mechanics and its Applications 290 (2001) 3, pp. 360-378

We study the stability of planar, cylindrical and spherical interfaces with respect to shape and width fluctuations for …

Persistent link: https://www.econbiz.de/10010874547

Density fluctuations and correlations of confined fluids

Varea, C.; Robledo, A. - In: Physica A: Statistical Mechanics and its Applications 268 (1999) 3, pp. 391-411

The density fluctuations about the equilibrium structure of fluids confined by parallel planar walls are analyzed for … identify the fluctuations close to the walls and in the middle of the slab and discuss their effect when the wall separation L … incipient wetting films that become unimpeded interfacial translations for L→∞. Below Tw the fluctuations with lowest eigenvalue …

Persistent link: https://www.econbiz.de/10011060877

Fluctuations and instabilities of curved interfaces

Varea, Carmen; Robledo, Alberto - In: Physica A: Statistical Mechanics and its Applications 255 (1998) 3, pp. 269-284

We study the stability of cylindrical and spherical interfaces with respect to density fluctuations within the square … eigenfunctions represent those fluctuations that are amplified in a process where the equilibrium state is reached. At early times …, in a simple model A kinetics, the eigenfunctions represent the fluctuations that grow or decay with a simple exponential …

Persistent link: https://www.econbiz.de/10010599474

The thermoelectric power, the dark electrical resistivity and the grain boundary potential barrier in CdIn2Se4 thin films

Abdel Hady, D.; El-Shazly, A.A.; Soliman, H.S.; … - In: Physica A: Statistical Mechanics and its Applications 226 (1996) 3, pp. 324-329

The thermoelectric power (Seebeck coefficient S) was measured for several preannealed CdIn2Se4 thin films of different thicknesses. The thermoelectric power measurements indicate that the preannealed CdIn2Se4 thin films are n-type semiconductors. The thermoelectric was utilized to calculate the...

Persistent link: https://www.econbiz.de/10010586807

Molecular dynamics study of an electro-kinetic fluid transport in a charged nanochannel based on the role of the stern layer

Rezaei, M.; Azimian, A.R.; Toghraie, D. - In: Physica A: Statistical Mechanics and its Applications 426 (2015) C, pp. 25-34

Electro-osmotic flow of an aqueous solution of NaCl has been studied using the molecular dynamics simulation. The main objective of this work is to investigate the effects of the electric field and temperature on the flow properties considering the role of the stern layer. By increasing any of...

Persistent link: https://www.econbiz.de/10011209726

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 size of the substrate particles, being smaller than the fluid particles in former simulations, is now taken to be equal to, respectively, larger than, that of the fluid...

Persistent link: https://www.econbiz.de/10010871679

Statistical thermodynamics of cluster phase transitions

Strachan, A.; Dorso, C.O. - In: Physica A: Statistical Mechanics and its Applications 257 (1998) 1, pp. 526-529

We study phase transitions of two-dimensional Lennard-Jones drops. A wide excitation energy range is studied, which encompasses the solid-like to liquid-like phase transition, the weakly evaporating liquid drop and multifragmentation. We are able to calculate the caloric curve for the whole...

Persistent link: https://www.econbiz.de/10010872134

Features of the structural arrest in a glass-forming polymer melt

Barbieri, A; Leporini, D - In: Physica A: Statistical Mechanics and its Applications 314 (2002) 1, pp. 521-525

The segmental motion and the reorientation of a model polymeric glassformer is investigated by molecular-dynamics simulations under isobaric conditions. At lower temperatures and short times cage effects are apparent. At longer times the segmental anomalous diffusion and the reorientation of the...

Persistent link: https://www.econbiz.de/10010872368

Microcanonical equations obtained from the Tsallis entropy

Carrete, J.; Varela, L.M.; Gallego, L.J. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 27, pp. 6752-6758

Microcanonical equations for some of the most usual thermodynamic properties of a system, suitable for molecular dynamics simulations, are derived from the Tsallis entropy functional using both the usual definition of temperature as a derivative of entropy and a modified physical one introduced...

Persistent link: https://www.econbiz.de/10010872597