Auxetic Perforated Mechanical Metamaterials with Randomly Oriented Cuts.

Grima, Joseph N; Mizzi, Luke; Azzopardi, Keith M; Gatt, Ruben · Adv Mater · 2016

basic_science · Level V

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Abstract

Perforated systems with quasi-disordered arrays of slits are found to exhibit auxetic characteristics almost as much as their traditional ordered "rotating-squares" counterparts. This provides a highly robust methodology for constructing auxetics that may be used for various practical applications such as skin grafting, where a high degree of precision may not always be achievable.