Spinning-enabled wireless amphibious origami millirobot

Qiji Ze, Shuai Wu, Jize Dai, Sophie Leanza, Gentaro Ikeda, Phillip C. Yang, Gianluca Iaccarino and Ruike Renee Zhao ()
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Qiji Ze: Stanford University
Shuai Wu: Stanford University
Jize Dai: Stanford University
Sophie Leanza: Stanford University
Gentaro Ikeda: Stanford University School of Medicine
Phillip C. Yang: Stanford University School of Medicine
Gianluca Iaccarino: Stanford University
Ruike Renee Zhao: Stanford University

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Wireless millimeter-scale origami robots have recently been explored with great potential for biomedical applications. Existing millimeter-scale origami devices usually require separate geometrical components for locomotion and functions. Additionally, none of them can achieve both on-ground and in-water locomotion. Here we report a magnetically actuated amphibious origami millirobot that integrates capabilities of spinning-enabled multimodal locomotion, delivery of liquid medicine, and cargo transportation with wireless operation. This millirobot takes full advantage of the geometrical features and folding/unfolding capability of Kresling origami, a triangulated hollow cylinder, to fulfill multifunction: its geometrical features are exploited for generating omnidirectional locomotion in various working environments through rolling, flipping, and spinning-induced propulsion; the folding/unfolding is utilized as a pumping mechanism for controlled delivery of liquid medicine; furthermore, the spinning motion provides a sucking mechanism for targeted solid cargo transportation. We anticipate the amphibious origami millirobots can potentially serve as minimally invasive devices for biomedical diagnoses and treatments.

Date: 2022
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DOI: 10.1038/s41467-022-30802-w

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