Controlling anisotropy in 2D microscopic models of growth

The quantitative knowledge of interface anisotropy in lattice models is a major issue, both for the parametrization continuum models, and analysis experimental observations. In this paper, we focus on line tension stiffness, which plays role equilibrium shapes fluctuations, selection nonequilibrium growth patterns. We consider 2D Ising Hamiltonian square with first second-nearest-neighbor interactions. surface stiffness are calculated by means broken-bond model arbitrary orientations. energy allows us to determine conditions under minimal. These results supported comparison kinetic Monte Carlo simulations, based coupling field mobile atoms condensed phase. Furthermore, introduce generic smoothing parameter one mimic finite resolution microscopy techniques. Our provide method fine-tune nanoscale non-equilibrium processes, where fluctuations combine give rise non-trivial morphologies.