材料科学
生物相容性
压阻效应
复合数
MXenes公司
压力传感器
多孔性
复合材料
弹性体
细菌纤维素
纳米技术
光电子学
纤维素
化学工程
工程类
冶金
物理
热力学
作者
Wenying Zhu,Hongshan Luo,Zhenhua Tang,Hao Zhang,Ting Fan,You-Yong Wang,Pei Huang,Yuanqing Li,Shao‐Yun Fu
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2022-03-08
卷期号:10 (11): 3546-3556
被引量:21
标识
DOI:10.1021/acssuschemeng.1c07994
摘要
Ti3C2Tx MXene has drawn remarkable attention in electronic sensors. Existing MXene-based pressure sensors generally have a narrow linear sensing range, which limits their wide application. Moreover, previous studies on MXene-based pressure sensors were mainly focused on increasing sensitivity via various microengineering techniques, but little attention has been paid to environmental stability and biocompatibility of these sensors. Herein, a highly flexible, biocompatible, and environmentally stable Ti3C2Tx MXene/bamboo cellulose fiber (BCF)/poly(dimethylsiloxane) (PDMS) composite pressure sensor with an ultrawide working range (up to 2 MPa), a high linearity (R2 = 0.966), and long-term stability is demonstrated. First, the MXene/BCF (MB) foam with well-optimized porosity and connectivity was prepared through an efficient freeze-drying method. Then, the MB-based piezoresistive composite (PMB) was obtained by directly embedding the MB foams into PDMS elastomers. In striking contrast to previous MXene composite-based pressure sensors, the PMB pressure sensor exhibits not only excellent pressure sensing performance and good biocompatibility but also prominent work reliability to resist temperature fluctuation, moisture/water, and UV irradiation. Furthermore, to demonstrate the potential of the PMB pressure sensor, various human movements under both ambient and harsh environmental conditions were monitored. Finally, the PMB pressure sensor was also successfully integrated with soft robotic hands to show its great potential in robotic tactile sensation.
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