The Creation Help “Read” the “Micro-expression” of Human Body2018.07.12
Recently, the research team led by Prof. Jiajie Liang, Nankai University, utilized the synergistic effects of three low-dimensional nanomaterials for the first time, which solved the contradiction between high sensitivity and deformation under great pressure in stress sensors, and greatly improved the device performance of sensors. The sensor can be made by simple, low-cost silk screen printing. The research finding has been published on Advanced Functional Materials. Prof. Jiajie Liang of College of Material Science and Engineering serves as the corresponding author.
The research group also put the new and wearable stress sensor on different parts of human body to conduct all-range examination on body motion. The stress sensor can test the subtle skin motions caused by pulses on wrist, detecting the three characteristic peaks of human pulse. Moreover, it can clearly detect the vocalization of body and tell the syllabus variation if put on the throat. In addition, the joint movements with large body deformation can also be captured.
Prof. Jiajie Liang introduced that the sensor can maintain high sensitivity to a wide range of working deformation, and boasts fast response, good signal repeatability and high working stability. At present, his team is taking active steps to promote the application of the stress sensor to the related wearable devices in motion detection and health monitoring.
Written by Chao Ma
Edited by Yuchen Shi and Ruoyan Yan