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Dudek, Krzysztof; Iglesias Martínez, Julio A.; Ulliac, Gwenn; Kadic, Muamer, 2024, "Source data for: Micro-Scale Auxetic Hierarchical Mechanical Metamaterials for Shape Morphing", https://doi.org/10.18150/UGWYS5, RepOD, V1
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Shape morphing and the possibility of having control over mechanical properties via designed deformations have attracted a lot of attention in the materials community and led to a variety of applications with an emphasis on the space industry. However, current materials normally do not allow to have a full control over the deformation pattern and often fail to replicate such behavior at low scales which is essential in flexible electronics. Thus, in this paper, novel 2D and 3D microscopic hierarchical mechanical metamaterials using mutually-competing substructures within the system that are capable of exhibiting a broad range of the highly unusual auxetic behavior are proposed. Using experiments (3D microprinted polymers) supported by computer simulations, it is shown that such ability can be controlled through geometric design parameters. Finally it is demonstrated that the considered structure can form a composite capable of shape morphing allowing it to deform to a predefined shape.
K. K. Dudek et al., Micro-Scale Auxetic Hierarchical Mechanical Metamaterials for Shape Morphing, Adv. Mater. 34, 2110115 (2022) https://doi.org/10.1002/adma.202110115 doi: 10.1002/adma.202110115
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