The Ultra‐Low Power 3D Graphene‐Based Magnetic Impedance Sensor with the Planar Structure
Source abstract
Abstract
ABSTRACT The three‐axis magnetometers are widely utilized in automotive electronics, industrial robotics, and intelligent navigation for motion recognition and attitude detection. But the conventional 3D magnetic field detection is realized with multiple orthogonal sensors, causing the spatial errors, non‐orthogonality, and bulky issue. This study presents an ultra‐low power 3D magneto‐impedance (MI) sensor based on a planar [FeSiBC 20 nm/Cu 6 nm] 50 /graphene microcoil/[FeSiBC 20 nm/Cu 6 nm] 50 heterostructure. Utilizing the synergetic effects of soft magnetic material's magnetoimpedance and graphene's Hall effect under the weak current excitation, it decouples the X, Y, Z magnetic field components in one measurement, avoiding the multiple steps required by the recent planar sensors. It possesses the ultra‐low power of 25 µW, high resolutions of 20, 20, 7587 nT/Hz 1/2 at the X, Y, Z direction, and real‐time detection capability. Experiments verify that the miniature sensor array improves the magnetic field imaging accuracy by around 65% compared to the conventional 1D Hall sensors in the magnetic field leakage test.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic Field Sensors Techniques · Graphene research and applications · Metallic Glasses and Amorphous Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Submarine Geoscience School of Automation and Intelligent Sensing Shanghai Jiao Tong University Shanghai China
School of Mechatronic Engineering and Automation Shanghai University Shanghai China
Key Laboratory of Computer Vision and Intelligent Information System Chongqing University of Arts and Sciences Chongqing China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Chongqing Municipality
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