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Highly Stretchable, Self-Healable, Ultrasensitive Strain and Proximity Sensors Based on Skin-Inspired Conductive Film for Human Motion Monitoring
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-11-03 , DOI: 10.1021/acsami.0c15578 Yuzhang Du 1 , Guanxiong Yu 2, 3 , Xingyi Dai 1 , Xudong Wang 1 , Bin Yao 2 , Jie Kong 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-11-03 , DOI: 10.1021/acsami.0c15578 Yuzhang Du 1 , Guanxiong Yu 2, 3 , Xingyi Dai 1 , Xudong Wang 1 , Bin Yao 2 , Jie Kong 1
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Recently, flexible electronics have been paid great attention due to their unique characteristics, such as high stretchability, arbitrary bending, and recoverable deformation. As a core component, flexible conductive materials with skin-like properties are desirable and valuable for the development of flexible electronics. However, the integration of skin-like mechanical properties, inherent self-healing ability, ultrahigh sensitivity, and electrical conductivity into one material is difficult to be realized. Here, this study reports a kind of conductive film (PAM-dc-fGO) fabricated by cross-linking intrinsic self-repair polyazomethine (PAM) and ethylenediamine-functionalized graphene oxide (fGO) through dynamic covalent bonds (imine bonds, −CH═N−). The as-prepared conductive films exhibit skin-like mechanical properties with a stretchability of 212–275% and elastic moduli of 0.76–4.23 MPa. In addition, the healing efficiency in mechanical properties of the 24 h healed specimen can restore up to 99%, and the healing efficiency in terms of electrical conductivity still maintains above 95% after five breaking/healing cycles, indicating an excellent capability of self-repair. Due to the ultrahigh sensing sensitivity with the gauge factor (GF) of 641, the PAM-dc-fGO film-based strain sensor can precisely detect the weak signals from the human body. Moreover, the remote monitoring of human motions with a long distance of about 100 cm has been successfully conducted by a PAM-dc-fGO proximity sensor. This work provides a new path for the development of multifunctional soft materials, and the sensors show great potential in health diagnoses and security protection applications.
中文翻译：
基于皮肤启发性导电膜的高度可拉伸，自修复，超灵敏应变和接近传感器，用于人体运动监测
近年来，柔性电子产品由于其独特的特性（例如高拉伸性，任意弯曲和可恢复的变形）而备受关注。作为核心组件，具有表皮特性的柔性导电材料是人们所希望的，并且对于柔性电子学的发展是有价值的。然而，难以实现将皮肤般的机械性能，固有的自我修复能力，超高灵敏度和导电性整合到一种材料中。在此，本研究报告了一种导电膜（PAM-dc-fGO），该膜是通过动态共价键（亚胺键，-CH═）将本征自修复聚偶氮甲碱（PAM）和乙二胺官能化氧化石墨烯（fGO）交联而成的。 N-）。所制备的导电膜表现出类似于皮肤的机械性能，可拉伸性为212–275％，弹性模量为0.76-4.23 MPa。此外，经过24小时修复的标本的机械性能的修复效率可以恢复到99％，而在5个断裂/修复循环后，就电导率而言的修复效率仍保持在95％以上，这表明其具有出色的自我修复能力。修理。由于具有641的规格系数（GF）的超高感应灵敏度，基于PAM-dc-fGO薄膜的应变传感器可以精确地检测到来自人体的微弱信号。此外，PAM-dc-fGO接近传感器已成功地进行了约100 cm长距离人体运动的远程监控。这项工作为多功能软材料的开发提供了一条新途径，
更新日期：2020-11-18
中文翻译：
基于皮肤启发性导电膜的高度可拉伸，自修复，超灵敏应变和接近传感器，用于人体运动监测
近年来，柔性电子产品由于其独特的特性（例如高拉伸性，任意弯曲和可恢复的变形）而备受关注。作为核心组件，具有表皮特性的柔性导电材料是人们所希望的，并且对于柔性电子学的发展是有价值的。然而，难以实现将皮肤般的机械性能，固有的自我修复能力，超高灵敏度和导电性整合到一种材料中。在此，本研究报告了一种导电膜（PAM-dc-fGO），该膜是通过动态共价键（亚胺键，-CH═）将本征自修复聚偶氮甲碱（PAM）和乙二胺官能化氧化石墨烯（fGO）交联而成的。 N-）。所制备的导电膜表现出类似于皮肤的机械性能，可拉伸性为212–275％，弹性模量为0.76-4.23 MPa。此外，经过24小时修复的标本的机械性能的修复效率可以恢复到99％，而在5个断裂/修复循环后，就电导率而言的修复效率仍保持在95％以上，这表明其具有出色的自我修复能力。修理。由于具有641的规格系数（GF）的超高感应灵敏度，基于PAM-dc-fGO薄膜的应变传感器可以精确地检测到来自人体的微弱信号。此外，PAM-dc-fGO接近传感器已成功地进行了约100 cm长距离人体运动的远程监控。这项工作为多功能软材料的开发提供了一条新途径，
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