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Science 27 February 1987:
Vol. 235. no. 4792, pp. 1038 - 1040
DOI: 10.1126/science.235.4792.1038
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Articles

Foam Structures with a Negative Poisson's Ratio

RODERIC LAKES 1

1 Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242.

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.

Submitted on October 6, 1986
Accepted on January 6, 1987


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