Sweat permeable and ultrahigh strength 3D PVDF piezoelectric nanoyarn fabric strain sensor

Wei Fan (), Ruixin Lei, Hao Dou, Zheng Wu, Linlin Lu, Shujuan Wang, Xuqing Liu, Weichun Chen, Mashallah Rezakazemi (), Tejraj M. Aminabhavi, Yi Li and Shengbo Ge ()
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Wei Fan: Xi’an Polytechnic University
Ruixin Lei: Xi’an Polytechnic University
Hao Dou: Xi’an Polytechnic University
Zheng Wu: Xi’an Polytechnic University
Linlin Lu: Xi’an Polytechnic University
Shujuan Wang: Xi’an Jiaotong University
Xuqing Liu: Northwestern Polytechnical University
Weichun Chen: Xi’an Polytechnic University
Mashallah Rezakazemi: Shahrood University of Technology
Tejraj M. Aminabhavi: KLE Technological University, Hubballi, India and Korea University
Yi Li: University of Manchester
Shengbo Ge: Nanjing Forestry University

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Commercial wearable piezoelectric sensors possess excellent anti-interference stability due to their electronic packaging. However, this packaging renders them barely breathable and compromises human comfort. To address this issue, we develop a PVDF piezoelectric nanoyarns with an ultrahigh strength of 313.3 MPa, weaving them with different yarns to form three-dimensional piezoelectric fabric (3DPF) sensor using the advanced 3D textile technology. The tensile strength (46.0 MPa) of 3DPF exhibits the highest among the reported flexible piezoelectric sensors. The 3DPF features anti-gravity unidirectional liquid transport that allows sweat to move from the inner layer near to the skin to the outer layer in 4 s, resulting in a comfortable and dry environment for the user. It should be noted that sweating does not weaken the piezoelectric properties of 3DPF, but rather enhances. Additionally, the durability and comfortability of 3DPF are similar to those of the commercial cotton T-shirts. This work provides a strategy for developing comfortable flexible wearable electronic devices.

Date: 2024
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DOI: 10.1038/s41467-024-47810-7

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