摘要
柔性应变传感器因其在人体运动检测、个人健康监测、人机交互等方面的巨大潜力引起了人们的广泛关注。在本工作中,我们通过简单可行的迈耶棒式涂布(Mayer rod coating)方法将石墨微片组装在桑蚕丝的表面上,制备了一种皮芯型石墨片/桑蚕丝纤维状柔性应变传感器,该纤维状应变传感器展现了一系列优异的性能,包括高灵敏性、微小的漂移、优良的稳定性等,并可通过综合位于不同方向3个独立应变传感器实现对多方向的应变进行检测。该制备方法可以进一步应用于其他纤维上,如棉线、聚酯纤维等,从而制备出具有不同性能特色的柔性应变传感器
Wearable strain sensors have attracted tremendous attention due to their great potential applications in human motion detection, personal health monitoring and human-machine interaction. Herein, we report a flexible and robust graphite/silk sheath-core fiber fabricated through a facile and scalable Mayer rod coating strategy for wearable strain sensors. Ultrafine graphite flakes were assembled onto silk fibers by this simple coating process. The graphite/silk fiber strain sensors showed high sensitivity, inconspicuous drift and excellent durability. Furthermore, multi-directional strain sensors can be simply fabricated by integrating number of independent strain sensors in disparate directions to simultaneously detect strains along multiple axes. This facile strategy could be further applied to other fibers with different diameters and break elongation to construct strain sensors with various gauge factors and maximum strain range.
引文
[1]Y.Meng,Y.Zhao,C.Hu,H.Cheng,Y.Hu,Z.Zhang,G.Shi,L.Qu,Adv.Mater.2013,25,2326.
[2]S.Lim,D.Son,J.Kim,Y.B.Lee,J.K.Song,S.Choi,D.J.Lee,J.H.Kim,M.Lee,T.Hyeon,Adv.Funct.Mater.2015,25,374.
[3]J.Lee,H.Kwon,J.Seo,S.Shin,J.H.Koo,C.Pang,S.Son,J.H.Kim,Y.H.Jang,D.E.Kim,Adv.Mater.2015,27,2433.