Magnetic-assisted triboelectric nanogenerators as self-powered visualized omnidirectional tilt sensing system.
The triboelectric nanogenerator (TENG) is a promising device in energy harvesting and self-powered sensing. In this work, we demonstrate a magnetic-assisted TENG, utilizing the magnetic force for electric generation. Maximum power density of 541.1 mW/m(2) is obtained at 16.67 MΩ for the triboelectric part, while the electromagnetic part can provide power density of 649.4 mW/m(2) at 16 Ω. Through theoretical calculation and experimental measurement, linear relationship between the tilt angle and output voltage at large angles is observed. On this basis, a self-powered omnidirectional tilt sensor is realized by two magnetic-assisted TENGs, which can measure the magnitude and direction of the tilt angle at the same time. For visualized sensing of the tilt angle, a sensing system is established, which is portable, intuitive, and self-powered. This visualized system greatly simplifies the measure process, and promotes the development of self-powered systems.
National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China, 100871.
Mengdi
M
Han
National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China, 100871.
Xiao-Sheng
XS
Zhang
National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China, 100871.
Xuming
X
Sun
National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China, 100871.
Bo
B
Meng
National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China, 100871.
Wen
W
Liu
National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China, 100871.
Haixia
H
Zhang