Carbonized Cotton Fabric for High‐Performance Wearable Strain Sensors

作者：Mingchao Zhang, Chunya Wang, Huimin Wang, Muqiang Jian, Xiangyang Hao, Yingying Zhang · 发表于：Advanced Functional Materials · 年份：2016 · DOI：10.1002/adfm.201604795 · 被引用次数：516 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Conducting polymers and applications、Cardiovascular and Diving-Related Complications

Recent years have witnessed the booming development of flexible strain sensors. To date, it is still a great challenge to fabricate strain sensors with both large workable strain range and high sensitivity. Cotton is an abundant supplied natural material composed of cellulose fibers and has been widely used for textiles and clothing. In this work, the fabrication of highly sensitive wearable strain sensors based on commercial plain weave cotton fabric, which is the most popular fabric for clothes, is demonstrated through a low‐cost and scalable process. The strain sensors based on carbonized cotton fabric exhibit fascinating performance, including large workable strain range (>140%), superior sensitivity (gauge factor of 25 in strain of 0%–80% and that of 64 in strain of 80%–140%), inconspicuous drift, and long‐term stability, simultaneously offering advantages of low cost and simplicity in device fabrication and versatility in applications. Notably, the strain sensor can detect a subtle strain of as low as 0.02%. Based on its superior performance, its applications in monitoring both vigorous and subtle human motions are demonstrated, showing its tremendous potential for applications in wearable electronics and intelligent robots.