Influence of strain distribution on the morphology evolution of a Ge/GeO2 core/shell nanoparticle confined in ultrathin Al2O3 thin film by surface oxidation |
Simulated evolution of the cross-sectional morphologies of a confined Ge/GeO2 core/shell nanoparticle at different oxidation stages: (a) the original stage, (b) the middle stage, (c) the later stage. |