A new window into the deformation of nanoscale materials

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Frames from a movie show a diamond nanoindenter (lower left in frames) loading a single aluminum grain (upper right in frames). A corresponding graph of load and displacement shows two of several separate events synchronised with pairs of movie frame ...
Frames from a movie show a diamond nanoindenter (lower left in frames) loading a single aluminum grain (upper right in frames). A corresponding graph of load and displacement shows two of several separate events, synchronised with pairs of movie frames where defects suddenly occur or shift their pattern. (The movie frames are depicted as film frames for effect, but are actually from a video recording).

Materials on the nanoscale don't always have the same properties they would in bulk; for one thing, nanomaterials are often a lot harder. Unlike most bulk materials, a crystal that is small enough can be perfect, free of defects, capable of achieving strength near its ideal theoretical limit.


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