Marangoni-flow-assisted assembly of single-walled carbon nanotube films for human motion sensing

Yuguang Chen; Yitan Li; Lu Han; Hao Sun; Min Lyu; Zeyao Zhang; Shigeo Maruyama; Yan Li

Fundamental Research (May 2024)

Marangoni-flow-assisted assembly of single-walled carbon nanotube films for human motion sensing

Yuguang Chen,
Yitan Li,
Lu Han,
Hao Sun,
Min Lyu,
Zeyao Zhang,
Shigeo Maruyama,
Yan Li

Affiliations

Yuguang Chen: Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Yitan Li: Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
Lu Han: Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Hao Sun: Bruker (Beijing) Scientific Technology Co. Ltd., Beijing 100192, China
Min Lyu: Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Peking University Shenzhen Institute, Shenzhen 518057, China; PKU-HKUST ShenZhen-HongKong Institution, Shenzhen 518057, China
Zeyao Zhang: Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Peking University Shenzhen Institute, Shenzhen 518057, China; PKU-HKUST ShenZhen-HongKong Institution, Shenzhen 518057, China
Shigeo Maruyama: Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
Yan Li: Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.; Corresponding author.

Journal volume & issue: Vol. 4, no. 3
pp. 570 – 574

Abstract

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Single-walled carbon nanotubes (SWCNTs) present excellent electronic and mechanical properties desired in wearable and flexible devices. The preparation of SWCNT films is the first step for fabricating various devices. This work developed a scalable and feasible method to assemble SWCNT thin films on water surfaces based on Marangoni flow induced by surface tension gradient. The films possess a large area of 40 cm × 30 cm (extensible), a tunable thickness of 15∼150 nm, a high transparency of up to 96%, and a decent conductivity. They are ready to be directly transferred to various substrates, including flexible ones. Flexible strain sensors were fabricated with the films on flexible substrates. These sensors worked with high sensitivity and repeatability. By realizing multi-functional human motion sensing, including responding to voices, monitoring artery pulses, and detecting knuckle and muscle actions, the assembled SWCNT films demonstrated the potential for application in smart devices.

Published in Fundamental Research

ISSN: 2667-3258 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Science: Science (General)
Website: https://www.keaipublishing.com/en/journals/fundamental-research/

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