| 1 | A self-powered piezoelectret sensor based on foamed plastic garbage for monitoring human motions显示文摘Constructing piezoelectret based on foamed plastic garbage is an advisable strategy for obtaining self-powered flexible electromechanical sensors with good performances.Herein,a self-powered piezoelectret sensor with basic material of low density polyethylene(LDPE)foamed plastic garbage is proposed,with characteristics of easy fabrication,excellent flexibility,and high equivalent piezoelectric coefficient d33 value up to~1,100 pC/N.The output stability is verified by continuously stimulating a sensor for~180,000 cycles under low and high applied pressure,and the variations of peak outputs are less than 5.5%.Applications for measuring low-and high-pressure signals from human body are achieved.Assembled with a wristband,a sensor is demonstrated for detecting the human pulse waves.Moreover,real time human sitting information is wirelessly monitored with a smart chair based on 4 pixels sensors array. | Yujun Shi Kaijun Zhang Sen Ding Zhaoyang Li Yuhao Huang Yucong Pi Dazhe Zhao Yaowen Zhang Renkun Wang Binpu Zhou Zhi-Xin Yang Junwen Zhong | 2023 | Nano Research2023，16，1： | 0 |
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