Optimal face-to-face coupling for fast self-folding kirigami

Maks Pecnik Bambic; Nuno A. M. Araújo; Benjamin J Walker; Duncan R. Hewitt; Qing Xiang Pei; Ran Ni; Giorgio Volpe

doi:10.1039/D3SM01474F

Optimal face-to-face coupling for fast self-folding kirigami

Maks Pecnik Bambic, Nuno A. M. Araújo, Benjamin J Walker, Duncan R. Hewitt, Qing Xiang Pei, Ran Ni, Giorgio Volpe

Department of Mathematical Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Kirigami-inspired designs can enable self-folding three-dimensional materials from flat, two-dimensional sheets. Hierarchical designs of connected levels increase the diversity of possible target structures, yet they can lead to longer folding times in the presence of fluctuations. Here, we study the effect of rotational coupling between levels on the self-folding of two-level kirigami designs driven by thermal noise in a fluid. Naturally present due to hydrodynamic resistance, we find that this coupling parameter can significantly impact a structure's self-folding pathway, thus enabling us to assess the quality of a kirigami design and the possibility for its optimization in terms of its folding rate and yield.

Original language	English
Pages (from-to)	1114-1119
Number of pages	6
Journal	Soft Matter
Volume	20
Issue number	5
Early online date	9 Jan 2024
DOIs	https://doi.org/10.1039/D3SM01474F
Publication status	Published - 7 Feb 2024

Funding

MPB, QXP and GV are grateful to the studentship funded by the A*STAR-UCL Research Attachment Programme through the EPSRC M3S CDT (EP/L015862/1). NAMA acknowledges financial support from the Portuguese Foundation for Science and Technology (FCT) under the contracts no. UIDB/00618/2020 and UIDP/00618/2020. BJW is supported by the Royal Commission for the Exhibition of 1851. NAMA and GV acknowledge support from the UCL MAPS Faculty Visiting Fellowship programme.

Funders	Funder number
UCL MAPS
Engineering and Physical Sciences Research Council	EP/L015862/1
Royal Commission for the Exhibition of 1851
Fundação para a Ciência e a Tecnologia	UIDP/00618/2020, UIDB/00618/2020

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AU - Pei, Qing Xiang

AU - Ni, Ran

AU - Volpe, Giorgio

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AB - Kirigami-inspired designs can enable self-folding three-dimensional materials from flat, two-dimensional sheets. Hierarchical designs of connected levels increase the diversity of possible target structures, yet they can lead to longer folding times in the presence of fluctuations. Here, we study the effect of rotational coupling between levels on the self-folding of two-level kirigami designs driven by thermal noise in a fluid. Naturally present due to hydrodynamic resistance, we find that this coupling parameter can significantly impact a structure's self-folding pathway, thus enabling us to assess the quality of a kirigami design and the possibility for its optimization in terms of its folding rate and yield.

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Optimal face-to-face coupling for fast self-folding kirigami

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