DSpace at KIST: Directing the Deformation Paths of Soft Metamaterials with Prescribed Asymmetric Units

Directing the Deformation Paths of Soft Metamaterials with Prescribed Asymmetric Units

Authors: Wu, Gaoxiang; Cho, Yigil; Choi, In-Suk; Ge, Dengteng; Li, Ju; Han, Heung Nam; Lubensky, Tom; Yang, Shu

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.

Keywords: NEGATIVE POISSONS RATIO; AUXETIC BEHAVIOR; PATTERN TRANSFORMATIONS; ELASTIC INSTABILITY; PERIODIC STRUCTURES; HYDROGEL MEMBRANES; SYMMETRY-BREAKING; PHOTONIC CRYSTAL; CELLULAR SOLIDS; SHAPE; NEGATIVE POISSONS RATIO; AUXETIC BEHAVIOR; PATTERN TRANSFORMATIONS; ELASTIC INSTABILITY; PERIODIC STRUCTURES; HYDROGEL MEMBRANES; SYMMETRY-BREAKING; PHOTONIC CRYSTAL; CELLULAR SOLIDS; SHAPE; buckling instability; foldable structures; pattern transformation; reconfigurable structures

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