Gaussian-preserved, non-volatile shape morphing in three-dimensional microstructures for dual-functional electronic devices

Ziao Tian, Borui Xu, Guangchao Wan, Xiaomin Han, Zengfeng Di, Zi Chen and Yongfeng Mei ()
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Ziao Tian: Fudan University
Borui Xu: Fudan University
Guangchao Wan: Dartmouth College
Xiaomin Han: Dartmouth College
Zengfeng Di: State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences
Zi Chen: Dartmouth College
Yongfeng Mei: Fudan University

Nature Communications, 2021, vol. 12, issue 1, 1-11

Abstract: Abstract Motile plant structures such as Mimosa pudica leaves, Impatiens glandulifera seedpods, and Dionaea muscipula leaves exhibit fast nastic movements in a few seconds or less. This motion is stimuli-independent mechanical movement following theorema egregium rules. Artificial analogs of tropistic motion in plants are exemplified by shape-morphing systems, which are characterized by high functional robustness and resilience for creating 3D structures. However, all shape-morphing systems developed so far rely exclusively on continuous external stimuli and result in slow response. Here, we report a Gaussian-preserved shape-morphing system to realize ultrafast shape morphing and non-volatile reconfiguration. Relying on the Gaussian-preserved rules, the transformation can be triggered by mechanical or thermal stimuli within a microsecond. Moreover, as localized energy minima are encountered during shape morphing, non-volatile configuration is preserved by geometrically enhanced rigidity. Using this system, we demonstrate a suite of electronic devices that are reconfigurable, and therefore, expand functional diversification.

Date: 2021
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DOI: 10.1038/s41467-020-20843-4

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