Discrete dislocation analysis of size effects in thin films

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Delocalizing strain in a thin metal film on a polymer substrate (2005, background): “For a metal film on a substrate, the interface may block dislocation motion and lead to steep hardening, as observed under small strains in wafer bending experiments (Nix, 1998), and in a numerical simulation that assumes a hard interface (Nicola et al., 2003).”
Thin Film Materials: Stress, Defect Formation and Surface Evolution (2004, background): “A phenomenon which has been observed when the islands become large enough to begin impinging on each other at their perimeters is that tensile stress is generated in the ̄lm (Nix and Clemens (1999), Seel et al. (2000), Floro et al.”
On the evolution of crystallographic dislocation density in non-homogeneously deforming crystals (2004, background): “The additional boundary conditions in the continuum model can be related to the type of dislocation boundary conditions that are applied to discrete dislocation dynamics simulations (Nicola et al., 2003).”
Plastic deformation of freestanding thin films: Experiments and modeling (2006, background): “This two-dimensional framework has predicted (Nicola et al., 2003), at least qualitatively, a range of features observed experimentally including, for example, the bilinear hardening seen in sufficiently thin films (Florando and Nix, 2005).”