Combinatorial Design of Textured Mechanical Metamaterials

Autor: Koen de Reus, Corentin Coulais, Yair Shokef, Eial Teomy, Martin van Hecke
Rok vydání: 2016
Předmět:
Surface (mathematics)
Computer science
Surface Properties
Soft robotics
Stacking
Holography
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
FOS: Physical sciences
Nanotechnology
02 engineering and technology
Condensed Matter - Soft Condensed Matter
Topology
Mechanics
01 natural sciences
Combinatorial design
0103 physical sciences
010306 general physics
Condensed Matter - Statistical Mechanics
ComputingMethodologies_COMPUTERGRAPHICS
Condensed Matter - Materials Science
Multidisciplinary
Statistical Mechanics (cond-mat.stat-mech)
business.industry
Metamaterial
Materials Science (cond-mat.mtrl-sci)
Robotics
Prostheses and Implants
021001 nanoscience & nanotechnology
Morphing
Aperiodic graph
Printing
Three-Dimensional
Soft Condensed Matter (cond-mat.soft)
Artificial intelligence
0210 nano-technology
business
Zdroj: Nature, 535, 529-532
Nature
DOI: 10.48550/arxiv.1608.00625
Popis: The structural complexity of metamaterials is limitless, although in practice, most designs comprise periodic architectures which lead to materials with spatially homogeneous features. More advanced tasks, arising in e.g. soft robotics, prosthetics and wearable tech, involve spatially textured mechanical functionality which require aperiodic architectures. However, a na\"ive implementation of such structural complexity invariably leads to frustration, which prevents coherent operation and impedes functionality. Here we introduce a combinatorial strategy for the design of aperiodic yet frustration-free mechanical metamaterials, whom we show to exhibit spatially textured functionalities. We implement this strategy using cubic building blocks - voxels - which deform anisotropically, a local stacking rule which allows cooperative shape changes by guaranteeing that deformed building blocks fit as in a 3D jigsaw puzzle, and 3D printing. We show that, first, these aperiodic metamaterials exhibit long-range holographic order, where the 2D pixelated surface texture dictates the 3D interior voxel arrangement. Second, they act as programmable shape shifters, morphing into spatially complex but predictable and designable shapes when uniaxially compressed. Third, their mechanical response to compression by a textured surface reveals their ability to perform sensing and pattern analysis. Combinatorial design thus opens a new avenue towards mechanical metamaterials with unusual order and machine-like functionalities.
Comment: Main text: 5 p, 3 figs. Methods: 4 p, 5 figs, 1 tab Supplementary Information: 11 p, 14 figs, 1 tab
Databáze: OpenAIRE
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