Resonator-Based Bidirectional Lorentz Force Magnetic Sensor

Nouha Alcheikh; Mohammad I. Younis

doi:10.1109/LED.2021.3055896

Resonator-Based Bidirectional Lorentz Force Magnetic Sensor

Nouha Alcheikh, Mohammad I. Younis

Mechanical & Nuclear Engineering

King Abdullah University of Science and Technology

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We present a low power high sensitive in-plane resonant bidirectional Lorentz-force magnetic micro-sensor operating in air at ambient pressure. The concept is based on the detection of the resonance frequency shift of an electrothermally straight micro-beam resonator operated near the buckling point. Powered at 20 mu text{W} , the micro-sensor shows a measured sensitivity (S) of 3.32/(mA.T), which is very high compared to the state of the art. The proposed method is simple in design making it promising for achieving practical low-cost magnetometer.

Original language	British English
Article number	9343302
Pages (from-to)	406-409
Number of pages	4
Journal	IEEE Electron Device Letters
Volume	42
Issue number	3
DOIs	https://doi.org/10.1109/LED.2021.3055896
State	Published - Mar 2021

Keywords

Bidirectional magnetic sensors
buckling point
high sensitivity
low power

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10.1109/LED.2021.3055896

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title = "Resonator-Based Bidirectional Lorentz Force Magnetic Sensor",

abstract = "We present a low power high sensitive in-plane resonant bidirectional Lorentz-force magnetic micro-sensor operating in air at ambient pressure. The concept is based on the detection of the resonance frequency shift of an electrothermally straight micro-beam resonator operated near the buckling point. Powered at 20 mu text{W} , the micro-sensor shows a measured sensitivity (S) of 3.32/(mA.T), which is very high compared to the state of the art. The proposed method is simple in design making it promising for achieving practical low-cost magnetometer.",

keywords = "Bidirectional magnetic sensors, buckling point, high sensitivity, low power",

author = "Nouha Alcheikh and Younis, {Mohammad I.}",

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AB - We present a low power high sensitive in-plane resonant bidirectional Lorentz-force magnetic micro-sensor operating in air at ambient pressure. The concept is based on the detection of the resonance frequency shift of an electrothermally straight micro-beam resonator operated near the buckling point. Powered at 20 mu text{W} , the micro-sensor shows a measured sensitivity (S) of 3.32/(mA.T), which is very high compared to the state of the art. The proposed method is simple in design making it promising for achieving practical low-cost magnetometer.

KW - Bidirectional magnetic sensors

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KW - high sensitivity

KW - low power

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Resonator-Based Bidirectional Lorentz Force Magnetic Sensor

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Keywords

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