材料科学
纳米纤维素
细菌纤维素
气凝胶
纤维素
压力传感器
纳米技术
复合材料
复合数
基质(水族馆)
化学工程
电子皮肤
环境压力
碳化
机械工程
海洋学
物理
地质学
工程类
热力学
扫描电子显微镜
作者
Sheng Chen,Yanglei Chen,Deqiang Li,Yanglei Xu,Feng Xu
标识
DOI:10.1021/acsami.0c21392
摘要
For sustainability and environmental friendliness, the renewable biomaterials including cellulose have been widely used in flexible electronics, such as pressure sensors. Herein, the carbonized bacterial nanocellulose with excellent conductivity and wood-derived cellulose nanofibrils are combined to prepare the aerogel through directional ice-templating and freeze-drying. The obtained composite aerogel, which has a porous structure and aligned channels, is further employed as an active layer to prepare the resistive-type pressure sensor on a paper substrate. This pressure sensor exhibits remarkable flexibility, fast response, reliability, and especially adjustable sensitivity in a wide pressure range (0–100 kPa). In addition, the sensor’s working mechanism and potential applications, such as motion detection, footstep recognition, and communication with smartphones via Bluetooth, are also well demonstrated. Moreover, this work provides novel insights into the development of green pressure sensors and the utilization of sustainable natural biomaterials in high-tech fields.
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