材料科学
检出限
导电体
线性范围
各向异性
极限(数学)
航程(航空)
步态
纳米技术
复合材料
声学
光电子学
光学
色谱法
物理医学与康复
数学分析
医学
化学
物理
数学
作者
Peng Ding,Zhenya Ge,Kui Yuan,Jiannan Li,Yi Zhao,Wei Zhai,Yanlong Zhao,Chuntai Liu,Changyu Shen,Kun Dai
出处
期刊:Nano Energy
[Elsevier]
日期:2024-03-01
卷期号:: 109490-109490
被引量:1
标识
DOI:10.1016/j.nanoen.2024.109490
摘要
A small-strain sensitive and highly compressible strain sensor is urgently required to handle external complex pressure environments in wearable applications and artificial intelligence. Therefore, the development of a reasonable sensor structure to achieve low detection limitation and wide linear detection range is significant and challenging. Herein, a muscle-inspired anisotropic conductive polydimethylsiloxane (PDMS)/carbon black (CB)/thermoplastic polyurethane (TPU) foam (PCTF) was prepared by directional freezing and ultrasonic-dipping method. The density and porosity of PCTF are 0.18 g cm-3 and 85.5%, respectively. Benefiting from the unique oriented structure, PCTF possesses good strain sensing performances, including ultra-low detection limit (0.002% strain), wide linear detection range (up to 82% strain and pressure over 500 kPa, logistic function R2=0.997), short response time (70 ms) and excellent sensing stability. In addition, PCTF demonstrates excellent properties as triboelectric nanogenerator (TEN(G) (2.5 × 3 cm2), including high triboelectric output (open-circuit voltage VOC=56 V) and high sensitivity (2.0 mV Pa-1), endowing PCTF with the motion state and running posture detecting ability. Moreover, PCTF-based strain sensors consisting of a plantar array can be employed to detect abnormal gait, including supination and pronation, providing a feasible strategy for training and personalized rehabilitation of the athletes.
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