Materials Under Extreme Conditions Pressure induced structural phase transition in CaO Plane shock loading on AlN ceramics showing the generation of a rocksalt nanostructured behind the shock front < Motion of partial edge dislocation in Copper < Dislocation forest generated at the interface of transformed and unstransformed SiC during hypervelocity impact. Back surface of the model is displayed on top and all untransformed atoms far from defects and surfaces are removed for clarity.