Reports

Foam Structures with a Negative Poisson's Ratio

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Science  27 Feb 1987:
Vol. 235, Issue 4792, pp. 1038-1040
DOI: 10.1126/science.235.4792.1038

Abstract

A novel foam structure is presented, which exhibits a negative Poisson's ratio. Such a material expands laterally when stretched, in contrast to ordinary materials.