Directing the deformation paths of soft metamaterials with prescribed asymmetric units.

Wu, Gaoxiang; Cho, Yigil; Choi, In-Suk; Ge, Dengteng; Li, Ju; Han, Heung Nam; Lubensky, Tom; Yang, Shu · Adv Mater · 2015

basic_science · Level V

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Abstract

By prescribing asymmetric ligaments with different arrangements in elastomeric porous membranes of pre-twisted kagome lattices, the buckling instability is avoided, allowing for smooth and homogenous structural reconfiguration in a deterministic fashion. The stress-strain behaviors and negative Poisson's ratios can be tuned by the pre-twisting angles.

Medical subject headings