Contact: Evan Lerner
University of Pennsylvania
Caption: Researchers at the University of Pennsylvania have devised a method to study stress at the macro and micro scales at the same time, using a model system in which microscopic particles stand in for molecules. This method has allowed the researchers to demonstrate an unusual hybrid behavior in their model material: a reversible rearrangement of its particles that nevertheless has the characteristics of plastic deformation on the macroscale. In this illustration of a portion of the material, dots represent particle positions and circles represent rearrangements.
Credit: University of Pennsylvania
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