题目：

Self-repairing flexible strain sensors based on nanocomposite hydrogels for whole-body monitoring

作者：

Hongwei Zhou， Zhaoyang Jin， Ying Yuan， Gai Zhang， Weifeng Zhao， Xilang Jin， Aijie Ma, Hanbin Liu, Weixing Chen.

文章信息：

Colloids and Surfaces A, 2020, 592, 124587

论文链接：

https://authors.elsevier.com/a/1abcp3IywUFMJf

摘要：

Flexible strain sensors based on extensible hydrogels are extensively investigated for human motion monitoring, but the performances of such strain sensors are limited by failure or high residual strain of hydrogels. Herein, self-repairing flexible strain sensors are fabricated with poly(AA-co-SMA)/c-CNF/Fe3+ nanocomposite hydrogels (AA: acrylic acid, SMA: stearyl methacrylate, c-CNF: carboxylate modified cellulose nanofibril). Because the nanocomposite hydrogels are fully supramolecularly cross-linked by hydrophobic association and ionic interaction, the flexible strain sensors can repair themselves upon damage and recover their sensing ability. Compared with other hydrogel-based self-repairing sensors, the flexible strain sensors in this work have intrinsically reversible sensing ability based on the improved resilience of the nanocomposite hydrogel by introducing c-CNF. In addition, such sensors also have integrated large sensing range (0～800 %), low response time (0.25?s), high sensitivity (strain 0～300 %, gauge factor?=?1.9; strain 400 %～800 %, gauge factor?=?4.4) and excellent durability (～1000 cycles) for guaranteeing their potential applications in whole-body monitoring.

恭喜靳赵阳同学，再接再厉！

感谢各位审稿专家提出的宝贵意见和建议！

感谢国家自然科学青年基金（No. 51603164）、陕西省普通高校青年杰出人才计划，陕西省自然科学基础研究计划（2019JM-124, 2016JQ5036）、陕西省高校科协青年人才托举计划项目（No. 20170706）对本工作的资助。