Magnetorheological elastomers enabled high-sensitive self-powered tribo-sensor for magnetic field detection

Nanoscale
Song QiZhong Lin Wang

Abstract

The monitoring of the magnetic field is the most significant process for academic or industrial applications. In this study, we design a self-powered magnetic-field sensor based on the magnetorheological elastomer (MRE) and triboelectric nanogenerator (TENG) that can be used for both time-varying and uniform magnetic field (UMF) sensing. This TENG-based magnetic-field sensor (TMFS) relies on contact electrification and electrostatic induction of TENG to generate an electrical signal in response to the magnetic-induced deformation of MRE without using an external power supply. Enabled by the unique sensing mechanism and excellent magnetic-induced deformation of MRE, the TMFS exhibits a fast response (20 ms) and good magnetic-field sensing performance. The TMFS with 60 wt%-MRE shows a maximum sensitivity of 16 mV mT-1 of the magnetic field ranging from 40 to 100 mT experimentally, and the sensitivity and detection range of TMFS can be adjusted by several parameters of the device. Besides the contribution to the effective detection of UMF, this novel sensor provides a new idea for the magnetic-field measurements in self-powered mode.

References

Apr 15, 2006·Science·Zhong Lin Wang, Jinhui Song
Mar 30, 2010·Nature Nanotechnology·Sheng XuZhong Lin Wang
Oct 16, 2012·ACS Nano·Ya YangZhong Lin Wang
Mar 7, 2014·Nature Communications·Guang ZhuZhong Lin Wang
Jul 15, 2015·ACS Applied Materials & Interfaces·Younghoon KimEunkyoung Kim
May 18, 2016·ACS Applied Materials & Interfaces·Wei GaoHongzhong Liu
Jun 9, 2016·Advanced Healthcare Materials·Jongmoon JangHongsoo Choi

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Citations

Sep 29, 2020·Soft Matter·Jose R Morillas, Juan de Vicente
Jan 6, 2021·ACS Applied Materials & Interfaces·Yuanxi ZhangLelun Jiang

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Methods Mentioned

BETA
scanning electron microscopy

Software Mentioned

ANSYS
LabVIEW
MIRA3TESCAN

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