Advanced Materials

Advances in negative Poisson's ratio materials

Authors

  • Prof. Roderic Lakes

    Corresponding author
    1. Department of Biomedical Engineering, Department of Mechanical Engineering, and Center for Laser Science and Engineering University of Iowa Iowa City, IA 52242 (USA)
    • Department of Biomedical Engineering, Department of Mechanical Engineering, and Center for Laser Science and Engineering University of Iowa Iowa City, IA 52242 (USA)
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  • Support of this research by the NASA/Boeing ATCAS program under contract #NAS1-18889, and by a University Faculty Scholar Award is gratefully acknowledged. Partial support by the ONR is also gratefully acknowledged.

Abstract

Solids that become fatter in cross-section when stretched are rare, but do exist. How such materials—which have a negative Poisson's ratio—can be created with specific properties, the implications of these unusual properties, and recent advances are discussed. The Figure shows an example of a negative Poisson's ratio structure with mechanical isotropy in two dimensions: the laminate of Milton.

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