Abstract
Shape-morphing devices, with their capacity to undergo structural transformations, are on the verge of revolutionizing multiple domains, from human–machine interfaces to biomedical and aerospace applications. This Perspective classifies shape-morphing devices into two categories: pattern-to-pattern shape-morphing devices that deform from a starting shape to a predefined set of one or more deformed shapes, and programmable shape-morphing devices that can morph into different shapes on demand. We highlight the need for standardized assessment approaches to compare the performance of different shape-morphing devices and introduce an array of proposed metrics that are tailored to assess the functionality of these devices at the material, device and system levels. Notably, we propose a mathematical metric to quantify the complexity of a surface and a set of standard surfaces for evaluating programmable shape-morphing devices, providing objective benchmarks for this expanding field.
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Acknowledgements
This work was supported by the Purdue startup funding to A.C. and by NSF award 2301509.
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Both authors researched data for the article and contributed substantially to discussion of the content. J.W. wrote the article. A.C. reviewed and/or edited the manuscript before submission.
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Wang, J., Chortos, A. Performance metrics for shape-morphing devices. Nat Rev Mater 9, 738–751 (2024). https://doi.org/10.1038/s41578-024-00714-w
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DOI: https://doi.org/10.1038/s41578-024-00714-w