材料科学
压阻效应
复合数
压力传感器
复合材料
耐久性
织物
机织物
无纺布
导电体
可穿戴计算机
计算机科学
机械工程
纤维
工程类
嵌入式系统
作者
Qinghua Yu,Chuanli Su,Siyi Bi,Yaoli Huang,Jianna Li,Huiqi Shao,Jinhua Jiang,Nanliang Chen
标识
DOI:10.1021/acsami.2c00980
摘要
Although Ti3C2Tx MXene/fabric composites have shown promise as flexible pressure sensors, the effects of MXene composition and structure on piezoresistive properties and the effects of the textile structure on sensitivity have not been systematically studied. Herein, impregnation at room temperature was used as a cost-effective and scalable method to prepare composite materials using different fabrics [plain-woven fabric, twill-woven fabric, weft plain-knitted fabric, jersey cross-tuck fabric, and nonwoven fabric (NWF)] and MXene nanosheets (Ti3C2Tx, Ti2CTx, Ti3CNTx, Mo2CTx, Nb2CTx, and Mo2TiC2Tx). The MXene nanosheets adhered to the fabric surface through hydrogen bonding, resulting in a conductive network structure. The Ti3C2Tx@NWF composite was found to be the optimal flexible pressure sensor, demonstrating high sensitivity (6.31 kPa-1), a wide sensing range (up to 150 kPa), fast response/recovery times (300 ms/260 ms), and excellent durability (2000 cycles). Furthermore, the sensor was successfully used to monitor full-scale human motion, including pulse, and a 4 × 4 pixel flexible sensor array was shown to accurately locate pressure and recognize the pressure magnitude. These findings provide a basis for the rational design of MXene/textile composites as wearable pressure sensors for medical diagnosis, human-computer interactions, and electronic skin applications.
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