Simultaneously Detecting Subtle and Intensive Human Motions Based on a Silver Nanoparticles Bridged Graphene Strain Sensor

被引:132
作者
Yang, Zhen [1 ,2 ]
Wang, Dan-Yang [1 ,2 ]
Pang, Yu [1 ,2 ]
Li, Yu-Xing [1 ,2 ]
Wang, Qian [1 ,2 ]
Zhang, Tian-Yu [1 ,2 ]
Wang, Jia-Bin [1 ,2 ]
Liu, Xiao [1 ,2 ]
Yang, Yi-Yan [1 ,2 ]
Jian, Jin-Ming [1 ,2 ]
Jian, Mu-Qiang [3 ,4 ]
Zhang, Ying-Ying [3 ,4 ]
Yang, Yi [1 ,2 ]
Ren, Tian-Ling [1 ,2 ]
机构
[1] Tsinghua Univ, Inst Microelect, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Tsinghua Natl Lab Informat Sci & Technol TNList, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
[4] Tsinghua Univ, CNMM, Beijing 100084, Peoples R China
关键词
strain sensor; Ag nanoparticles; graphene; bridge; human motions; INTEGRATED-CIRCUITS; FLEXIBLE DISPLAY; HIGH-PERFORMANCE; PRESSURE; MATRIX; LAYERS; FILMS; TRANSISTORS; AREA; SKIN;
D O I
10.1021/acsami.7b16284
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
There is a growing demand for flexible electronic devices. In particular, strain sensors with high performance have attracted more and more attention, because they can be attached on clothing or human skin for applications in the real-time monitoring of human activities. However, monitoring human-body motions that include both subtle and intensive motions, and many strain sensors cannot meet the diverse demands simultaneously. In this work, a silver nanoparticles (Ag NPs) bridged graphene strain sensor is developed for simultaneously detecting subtle and intensive human motions. Ag NPs serve as many bridges to connect the self-overlapping graphene sheets, which endows the strain sensor with many excellent performances. Because of the high sensitivity, with a large gauge factor (GF) of 475 and a strain range of >14.5%, high durability of the sensor has been achieved. Besides, the excellent consistency and repeatability of the fabrication process is verified. Furthermore, the model for explaining the working mechanism of the strain sensor is proposed. Most importantly, the designed wearable strain sensor can be applied in human motion detection, including large-scale motions and small-scale motions.
引用
收藏
页码:3948 / 3954
页数:7
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