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In situ fabrication of porous polymer films embedded with perovskite nanocrystals for flexible superhydrophobic piezoresistive sensors.
Xuan, Wufan; Fang, Yuan; Teng, Shuhua; Huang, Sheng; Zou, Liang; Gao, ShaSha; Cheng, Yongchao; Zheng, Lina.
Afiliación
  • Xuan W; Jiangsu Engineering Research Center for Dust Control and Occupational Protection, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
  • Fang Y; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
  • Teng S; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
  • Huang S; Jiangsu Engineering Research Center for Dust Control and Occupational Protection, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; School of Materials Science and Physics,
  • Zou L; Jiangsu Engineering Research Center for Dust Control and Occupational Protection, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
  • Gao S; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
  • Cheng Y; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
  • Zheng L; Jiangsu Engineering Research Center for Dust Control and Occupational Protection, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China. Electronic address: zhenglina@cumt.edu.c
J Colloid Interface Sci ; 669: 358-365, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38718589
ABSTRACT
The application of pressure sensors based on perovskite in high-humidity environments is limited by the effect of water on their stability. Endowing sensors with superhydrophobicity is an effective strategy to overcome the issue. In this work, MAPbBr3/Polyvinylidene Fluoride-TFSI composite was prepared by a one-step in-situ strategy to form a flexible superhydrophobic pressure sensor, which exhibited a contact angle of 150.25°. The obtained sensor exhibited a sensitivity of 0.916 in 1 kPa, a detection limit of 0.2 Pa, a precision of 0.1 Pa, and a response/recovery of ∼100 ms, along with good thermal stability. Through density functional theory calculations, it is revealed that the formation of the porosity is attributed to the interaction between the polymer and EMIM TFSI, which further leads to superhydrophobicity. And, the perovskite structure is easy to change under pressure, affecting the carrier transport and electrical signals output, which explains the sensing mechanism. In addition, the sensor performed well in monitoring facial expression, pulse, respiration, finger bending, and wind speed ranging from 1 m/s to 6 m/s. With both the Linear Regression and the Random Forest algorithm, the sensor can monitor the wind speed with an R2 greater than 0.977 in 60 tests.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos