Bofa Electronics

According to Maims Consulting, the Liang Jiajie research team of Nankai University successfully solved the contradiction between high sensitivity and large working deformation in the stress sensor for the first time by using the synergistic effect of three low-dimensional nanomaterials. This research has greatly improved the performance of stress sensor devices such as wearable devices, and can accurately capture the subtle expression changes of human body.
Liang Jiajie's research team used the synergetic effect of a variety of nano-functional materials such as fullerene, metallic silver nanowires, graphene oxide and so on to improve the flexibility of the host material by introducing the object material with low friction coefficient into the rigid layered structure host material, and solved the problem that has puzzled the academic community for a long time. The sensor made of this material can maintain extremely high response sensitivity in a large working deformation range. The research team put the new wearable stress sensor on different parts of the human body, and used it in the monitoring of the whole range of human movement, which can clearly capture the tiny skin movement changes on the wrist caused by pulse pulsation; The three characteristic peaks of human pulse beating are clearly reflected; Wearing it on the neck and throat can clearly detect the voice of human vocal cords and recognize different syllable changes.
It was also introduced that the new type of stress sensor can be formed by printing in one step, and has the advantages of good repeatability and simple preparation process, which can provide a good material basis for realizing real productization. At present, the research group is actively docking and coordinating to promote the application of the stress sensor in wearable devices related to human motion detection and human health monitoring. Relevant achievements were published in the latest issue of Advanced Functional Materials.