We report recent simulation results which might indicate the existence of a new low-temperature “phase” in an Ising lattice gas, driven into a non-equilibrium steady state by an external field. It appears that this “phase”, characterized by multiple-strip configurations, is selected when...

The equilibrium shape of a crystal in an infinite or a semi-infinite system has been known for decades. Here, we consider shapes of droplets which straddle two semifinite systems, joint at a planar, common boundary, such as a grain boundary of twinned crystals. For arbitrary anisotropic surface...

A stochastic lattice gas with equal numbers of oppositely “charged” particles, diffusing under the influence of a uniform external “electric” field and the excluded volume condition, exhibits an order-disorder phase transition, controlled by particle density and field strength. Ordered...

An Ising model in the lattice gas representation is driven far from equilibrium by an external “electric” field into a steady state. Apart from displaying a new class of singularities associated with the second order phase transition, multi-particle correlations are singular for all...