title: Stress and morphology evolution during island growth.
abstract: We performed a series of hybrid molecular-dynamics simulations of island growth on a substrate and monitored island stress evolution for several different island/substrate interfacial energies. Smaller (larger) interfacial energy yields islands with a stronger (weaker) compressive stress-thickness product. We present analytical results that suggest that the stress-thickness product is a linear function of the substrate coverage, with slope equal to minus the substrate surface stress, if the island is in mechanical equilibrium, and verify these results with simulation data.
authors.affiliation: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: Chun-Wei
authors.initials: CW
authors.lastname: Pao
authors.forename: David J
authors.initials: DJ
authors.lastname: Srolovitz