Bertoldi, KatiaReis, Pedro M.Willshaw, StephenMullin, Tom2013-09-182010Bertoldi, Katia, Pedro M. Reis, Stephen Willshaw, and Tom Mullin. 2010. Negative Poisson's Ratio Behavior Induced by an Elastic Instability. Advanced Materials 22(3): 361-366.0935-9648http://nrs.harvard.edu/urn-3:HUL.InstRepos:11051225Negative Poisson's ratio behavior has been uncovered in cellular solids that comprise a solid matrix with a square array of circular voids. The simplicity of the fabrication implies robust behavior, which is relevant over a range of scales. The behavior results from an elastic instability, which induces a pattern transformation and excellent quantitative agreement is found between calculation and experiment.en-USarraysauxetic materialselastic instabilitymatricesPoisson's ratioJournal Article2013-07-10Katia Bertoldi, Pedro M. Reis, Stephen Willshaw and Tom Mullin2013-09-1810.1002/adma.200901956