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The phase diagram of a bilayer Ising model

Sloutskin, E.; Gitterman, M. - In: Physica A: Statistical Mechanics and its Applications 376 (2007) C, pp. 337-350

The phase diagram of a quasi-2D two-layer Ising lattice, with a variable inter-layer interaction parameter, is determined by phenomenological order-disorder, mean-field (MF), and simplified renormalization group (RG) approaches. Bethe approximation is used to determine phase diagrams of...

Persistent link: https://www.econbiz.de/10010873704

Deposition of particles under gravity in a kinetic lattice model

Terraneo, F.M.; Fima, A. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 28, pp. 6913-6916

We study the growth through particle deposition of the surface of a discrete two-dimensional system, in which the …

Persistent link: https://www.econbiz.de/10011057127

Local-field effects and electronic anisotropy of the (1×2) reconstructed Au(1 1 0) surface

Hansen, J.-K.; Bremer, J.; Seime, L.; Hunderi, O. - In: Physica A: Statistical Mechanics and its Applications 298 (2001) 1, pp. 46-55

. An experimental study has been made of the reflection anisotropy for the clean Au(110) surface at room temperature, where … minimum is attributed to the effect of the screened local-field on d-band transitions at the surface. The influence of … broadening and shifts in critical-point energies for the surface principal directions is discussed. …

Persistent link: https://www.econbiz.de/10011062232

Percolation conduction in vapour grown carbon fibre

Andrade, J.S.; Auto, A.M.; Kobayashi, Y.; Shibusa, Y.; … - In: Physica A: Statistical Mechanics and its Applications 248 (1998) 3, pp. 227-234

We investigate the conductivity variation with density of compacted vapour-grown carbon fibre (VGCF). The results indicate a typical transition between a non-linear domain at low compaction conditions and a regime where the conductivity increases roughly linearly with density when the sample is...

Persistent link: https://www.econbiz.de/10010587170

Nonlinear optics of fractal nanomaterials: Small-particle composites and self-affine thin films

Shalaev, Vladimir M.; Poliakov, E.Y.; Markel, V.A.; … - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 249-258

Fractal nanostructured materials, such as nanocomposites and self-affine thin films, are shown to possess giant optical nonlinearities. The enhancement results from the sub-wavelength localization of dipolar modes and strong local field fluctuations.

Persistent link: https://www.econbiz.de/10010587380

Static and dynamic electrical breakdown in conducting filled-polymers

Lamaignère, L.; Carmona, F.; Sornette, D. - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 328-333

The electrical resistance of a percolating medium made of a polymer filled with conductive particles may undergo a steep increase over a narrow temperature range above room temperature. A likely mechanism for the effect is the loss of interparticle contact inducing a weakening of the...

Persistent link: https://www.econbiz.de/10010587605

Crack formation in composites through a spring model

Sadhukhan, Supti; Dutta, Tapati; Tarafdar, Sujata - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 4, pp. 731-740

When two or more different materials are combined to form composites, the property of the composite may be quite …. We study crack formation in composites through a very general spring network model on a square lattice. The spring model …

Persistent link: https://www.econbiz.de/10010590465

Percolation modeling of conductance of self-healing composites

Dementsov, Alexander; Privman, Vladimir - In: Physica A: Statistical Mechanics and its Applications 385 (2007) 2, pp. 543-550

We explore the conductance of self-healing materials as a measure of the material integrity in the regime of the onset of the initial fatigue. Continuum effective-field modeling and lattice numerical simulations are reported. Our results illustrate the general features of the self-healing...

Persistent link: https://www.econbiz.de/10010873616

Nonlinear conduction in composites above percolation threshold — beyond the backbone

Bardhan, K.K. - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 267-277

We review here the response of mainly conductor-insulator mixtures just above the percolation threshold (pc) under dc bias. I–V characteristics changes from being linear to nonlinear as the applied bias is increased. Closer a sample is to pc, greater is the nonlinearity. Analysis of nonlinear...

Persistent link: https://www.econbiz.de/10011058267

Electrical transport measurements of a carbon-black—polymer composite

Heaney, Michael B. - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 296-300

, and above the polymer melt temperature. I have also measured the DC resistivity of these composites as a function of …

Persistent link: https://www.econbiz.de/10011060668