A Breathable Knitted Fabric-Based Smart System with Enhanced Superhydrophobicity for Drowning Alarming

Tianxue Zhu, Yimeng Ni, Kaiying Zhao, Jianying Huang, Yan Cheng, Mingzheng Ge, Cheolmin Park, Yuekun Lai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Wearable strain sensors have aroused increasing interest in human motion monitoring, even for the detection of small physiological signals such as joint movement and pulse. Stable monitoring of underwater human motion for a long time is still a notable challenge, as electronic devices can lose their effectiveness in a wet environment. In this study, a superhydrophobic and conductive knitted polyester fabric-based strain sensor was fabricated via dip coating of graphene oxide and polydimethylsiloxane micro/nanoparticles. The water contact angle of the obtained sample was 156°, which was retained above 150° under deformation (stretched to twice the original length or bent to 80°). Additionally, the sample exhibited satisfactory mechanical stability in terms of superhydrophobicity and conductivity after 300 abrasion cycles and 20 accelerated washing cycles. In terms of sensing performance, the strain sensor showed a rapid and obvious response to different deformations such as water vibration, underwater finger bending, and droplet shock. With the good combination of superhydrophobicity and conductivity, as well as the wearability and stretchability of the knitted polyester fabric, this wireless strain sensor connected with Bluetooth can allow for the remote monitoring of water sports, e.g., swimming, and can raise an alert under drowning conditions.

Original languageEnglish
Pages (from-to)18018-18026
Number of pages9
JournalACS Nano
Issue number11
Publication statusPublished - 2022 Nov 22

Bibliographical note

Funding Information:
The authors thank the National Natural Science Foundation of China (22075046, 51972063, 21501127, and 51502185), Natural Science Funds for Distinguished Young Scholars of Fujian Province (2020J06038), Natural Science Foundation of Fujian Province (2022J01568, 2019J01256), and 111 Project (No. D17005). The authors are supported by the Opening Fund of the China National Textile and Apparel Council Key Laboratory of Flexible Devices for Intelligent Textile and Apparel, Soochow University (No. SDHY2110), State Key Laboratory of New Textile Materials and Advanced Processing Technologies (FZ2021012). This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2018M3D1A1058536).

Publisher Copyright:
© 2022 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)


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