Expandable microsphere-based triboelectric nanogenerators as ultrasensitive pressure sensors for respiratory and pulse monitoring

被引：180
作者：
Liu, Zhaoxian [1 ,2 ,3 ]
Zhao, Zhizhen [2 ,3 ]
Zeng, Xiangwen [2 ,3 ]
Fu, Xiuli [1 ]
Hu, Youfan [2 ,3 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
[2] Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China
[3] Peking Univ, Dept Elect, Beijing 100871, Peoples R China
来源：
NANO ENERGY | 2019年 / 59卷
基金：
中国国家自然科学基金;
关键词：
Pressure sensor; Triboelectric nanogenerator; Expandable microsphere; Ultrasensitive; Biological signals monitoring; SURFACE-CHARGE DENSITY; BIOMECHANICAL ENERGY; WAVE ENERGY; SOLAR-CELL; GENERATOR; TRANSPARENT; POLYDIMETHYLSILOXANE; EFFICIENCY; CONVERSION; NETWORK;
D O I：
10.1016/j.nanoen.2019.02.057
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Physiological monitoring sensors have attracted increasing research interest due to their broad application potential in daily activities, sports performance and health status monitoring for next generation athletic/clinical technologies. Having high sensitivity and low power consumption are essential to realize these applications in advanced portable/remote forms. In this work, triboelectric nanogenerators (TENGs), which are based on expandable microspheres in a polydimethylsiloxane (PDMS) mixture, were constructed as self-powered pressure sensors with ultrahigh sensitivity for biological signal monitoring through a low-cost and simple processing technique. Different sensitivities can be obtained by adjusting the weight percentage of microspheres in the PDMS, and the output voltage of the sensor was analyzed by a theoretical model, which was consistent with the simulation results. The maximum sensitivity of the sensor can reach 150 mV/Pa so respiratory and pulse monitoring can be implemented by attaching the ultrasensitive pressure sensor to the chest and wrist of a human body, respectively.
引用
收藏
页码：295 / 301
页数：7
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