PerspectiveMaterials Science

Small Volumes Create Super(elastic) Effects

+ See all authors and affiliations

Science  27 Sep 2013:
Vol. 341, Issue 6153, pp. 1464-1465
DOI: 10.1126/science.1245097

You are currently viewing the summary.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


Summary

Anyone who has ever broken a favorite coffee cup knows that ceramic materials do not accommodate strain well. Ceramic materials typically fail at strains (extensions) of less than 0.1%. On page 1505 of this issue, Lai et al. (1) demonstrate a class of ceramics that can deform reversibly by more than 7%, rendering these solids “superelastic.” To put this in context, at 7% strain, an aluminum can would crumple with no hope of recovery. When Lai et al. made small chemical changes to their ceramics, they found a memory effect, whereby the solid can be permanently deformed, but upon heating reverts back to its original size and shape.

Related Content