Photopatterned microswimmers with programmable motion without external stimuli

Yeongjae Choi (), Cheolheon Park, Amos C. Lee, Junghyun Bae, Hyeli Kim, Hansol Choi, Seo woo Song, Yunjin Jeong, Jaewon Choi, Howon Lee, Sunghoon Kwon () and Wook Park ()
Additional contact information
Yeongjae Choi: Seoul National University
Cheolheon Park: Kyung Hee University
Amos C. Lee: Seoul National University
Junghyun Bae: Kyung Hee University
Hyeli Kim: Kyung Hee University
Hansol Choi: Seoul National University
Seo woo Song: Seoul National University
Yunjin Jeong: Seoul National University
Jaewon Choi: Seoul National University
Howon Lee: Seoul National University
Sunghoon Kwon: Seoul National University
Wook Park: Kyung Hee University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract We introduce highly programmable microscale swimmers driven by the Marangoni effect (Marangoni microswimmers) that can self-propel on the surface of water. Previous studies on Marangoni swimmers have shown the advantage of self-propulsion without external energy source or mechanical systems, by taking advantage of direct conversion from power source materials to mechanical energy. However, current developments on Marangoni microswimmers have limitations in their fabrication, thereby hindering their programmability and precise mass production. By introducing a photopatterning method, we generated Marangoni microswimmers with multiple functional parts with distinct material properties in high throughput. Furthermore, various motions such as time-dependent direction change and disassembly of swimmers without external stimuli are programmed into the Marangoni microswimmers.

Date: 2021
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DOI: 10.1038/s41467-021-24996-8

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