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Advances in Magnetic Sensors: Innovations, Challenges and Applications
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Advances in Magnetic Sensors: Innovations, Challenges and Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Intelligent Sensors".

Deadline for manuscript submissions: 15 October 2026 | Viewed by 3772

Special Issue Editor

Prof. Dr. Qi Han

E-Mail Website
Guest Editor
Department of Computer Science and Engineering, Harbin Institute of Technology, Harbin, China
Interests: magnetic anomaly sensing; signal processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue aims to synthesize original research and review articles on recent advances, technologies, solutions, and challenges in the field of magnetic sensors, with a focus on their various applications, such as magnetic anomaly detection, Earth magnetism navigation, biological magnetic measurement, and space magnetic measurement, among others. Potential topics include but are not limited to the following:

  • New advances in magnetic sensors and systems;
  • Aeromagnetic surveys and systems;
  • Unmanned vehicles for magnetic surveys;
  • Aeromagnetic anomaly sensing systems;
  • Underwater magnetic anomaly sensing systems;
  • Biological magnetic field measurement and its medical applications;
  • Advanced magnetic sensor technology;
  • Magnetic interference compensation technology;
  • Advanced magnetic detection platforms;
  • Magnetic data processing technology;
  • Magnetic anomaly sensing technology based on artificial intelligence;
  • New applications of magnetic anomaly sensing technology;
  • AI techniques for magnetic sensing and measurement.

Prof. Dr. Qi Han
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • magnetic sensor
  • magnetic anomaly detection
  • earth magnetism navigation
  • biological magnetic measurement
  • space magnetic measurement
  • unmanned vehicle
  • artificial intelligence

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

23 pages, 6413 KB  
Article
High-Sensitivity and Temperature-Robust Gas Sensor Based on Magnetically Induced Differential Mode Splitting in InSb Photonic Crystals
by Jin Zhang, Leyu Chen, Chenxi Xu and Hai-Feng Zhang
Sensors 2026, 26(6), 1914; https://doi.org/10.3390/s26061914 - 18 Mar 2026
Viewed by 397
Abstract
High-precision detection of hazardous gases with low refractive indices ranging from 1.000 to 1.100, specifically including methane, carbon monoxide, and sulfur dioxide, is critical for industrial safety, yet conventional sensors often suffer from limited sensitivity and severe thermal cross-sensitivity. This work presents a [...] Read more.
High-precision detection of hazardous gases with low refractive indices ranging from 1.000 to 1.100, specifically including methane, carbon monoxide, and sulfur dioxide, is critical for industrial safety, yet conventional sensors often suffer from limited sensitivity and severe thermal cross-sensitivity. This work presents a Magneto-Optical Differential Photonic Crystals Sensor (MO-DPCS) utilizing indium antimonide (InSb) to address these constraints. Employing the Multi-Objective Dragonfly Algorithm (MODA), the system was inversely optimized to maximize magneto-optical polarization splitting while rigorously maintaining an ultra-high transmission efficiency. Crucially, an angular interrogation architecture operating under oblique incidence was established to maximize the magneto-optical non-reciprocity, where the detection was realized by fixing the terahertz source frequency and monitoring the precise angular displacements of the steep spectral edges. A differential detection technique was employed to utilize the non-reciprocal phase changes wherein Transverse Electric (TE) and Transverse Magnetic (TM) modes display contrasting kinematic characteristics in the presence of an external magnetic field. The findings indicate that with an adjusted magnetic field of 0.033 T, the MO-DPCS attains an exceptional differential sensitivity of 30.8°/RIU, much above the 0.8°/RIU seen in the unmagnetized condition. The differential approach efficiently eliminates common-mode thermal noise, minimizing temperature-induced drift to below 0.35° across a 1 K range. The suggested MO-DPCS offers a robust, self-referencing solution for stable and high-sensitivity gas sensing applications with a detection limit of 4.18 × 10−4 RIU. Full article
(This article belongs to the Special Issue Advances in Magnetic Sensors: Innovations, Challenges and Applications)
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18 pages, 2647 KB  
Article
High-Precision Aeromagnetic Compensation Method Under the Influence of the Geomagnetic Field
by You Li, Guochao Wang, Qi Han and Qiong Li
Sensors 2026, 26(6), 1867; https://doi.org/10.3390/s26061867 - 16 Mar 2026
Viewed by 429
Abstract
Aeromagnetic surveys play an important role in geophysical exploration and many other fields. In many applications, magnetometers are installed aboard an aircraft to survey large areas. Due to its composition, an aircraft has its own magnetic field, which degrades the reliability of the [...] Read more.
Aeromagnetic surveys play an important role in geophysical exploration and many other fields. In many applications, magnetometers are installed aboard an aircraft to survey large areas. Due to its composition, an aircraft has its own magnetic field, which degrades the reliability of the measurements, and thus a technique (named aeromagnetic compensation) that reduces the effect of magnetic interference is required. Commonly, based on a figure-of-merit (FOM) flight, this issue is solved as a linear regression problem. However, the influence of the geomagnetic field, which refers to the magnetic interference introduced by the non-uniform magnetic field in the region, creates accuracy problems when estimating the model coefficients. The analysis in this study indicates that the geomagnetic field can be obtained by a data processing method based on Gaussian-process-regression (GPR) combined with the measurement process. Accordingly, we propose a high-precision compensation method, designated as the Geomagnetic Field-Based (GF-Based) method, which isolates geomagnetic influence to enhance calibration fidelity. This method restricts the impact of the geomagnetic field and improves the precision of the calibration. Compared with the existing methods which considered the geomagnetic field, the proposed method improves the improved ratio (IR), which is verified by a set of airborne experiments. Full article
(This article belongs to the Special Issue Advances in Magnetic Sensors: Innovations, Challenges and Applications)
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11 pages, 671 KB  
Article
Direct Experimental Demonstration of Bend-Induced Transformation of Magnetic Structure in Amorphous Microwires
by Alexander Chizhik, Valentina Zhukova and Arcady Zhukov
Sensors 2025, 25(16), 5000; https://doi.org/10.3390/s25165000 - 12 Aug 2025
Viewed by 969
Abstract
In the pursuit of active elements for bending and curvature sensors, magneto-optical investigations were performed on bent microwires. For the first time, local surface magnetization reversal curves were obtained from various sides of bent Co-rich and Fe-rich microwires. The observed differences in surface [...] Read more.
In the pursuit of active elements for bending and curvature sensors, magneto-optical investigations were performed on bent microwires. For the first time, local surface magnetization reversal curves were obtained from various sides of bent Co-rich and Fe-rich microwires. The observed differences in surface magnetization reversal behavior are directly attributed to the transverse distribution of internal mechanical stresses, which range from maximum tensile stress on the outer side of the bent sample to maximum compressive stress on the inner side. Depending on the sample composition and the nature of local stress, distinct magnetic structures—axial, elliptical, and spiral—were identified in different locations on the surface of the microwire. These findings provide valuable insights into the operational mechanisms of bending-sensitive magnetic sensors. Full article
(This article belongs to the Special Issue Advances in Magnetic Sensors: Innovations, Challenges and Applications)
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20 pages, 2846 KB  
Article
An FSM-Assisted High-Accuracy Autonomous Magnetic Compensation Optimization Method for Dual-Channel SERF Magnetometers Used in Weak Biomagnetic Signal Measurement
by Xinran Tian, Bo Bao, Ridong Wang and Dachao Li
Sensors 2025, 25(12), 3690; https://doi.org/10.3390/s25123690 - 12 Jun 2025
Cited by 2 | Viewed by 1353
Abstract
Atomic magnetometers based on the spin-exchange relaxation-free (SERF) regime have broad applications in bio-magnetic measurement due to their high sensitivity and miniaturized size. In this paper, we propose a SERF-based magnetometer using 1 × 2 polarization-maintaining fiber (PMF) with single-beam parameter optimization. The [...] Read more.
Atomic magnetometers based on the spin-exchange relaxation-free (SERF) regime have broad applications in bio-magnetic measurement due to their high sensitivity and miniaturized size. In this paper, we propose a SERF-based magnetometer using 1 × 2 polarization-maintaining fiber (PMF) with single-beam parameter optimization. The impacts of temperature, pumping laser power, and modulation amplitude on the magnetometer’s response signal at the SERF regime are examined. Moreover, through the simulation of zero-field resonance, the compensation accuracy is optimized. To further improve the compensation stability and accuracy, a novel finite state machine (FSM)-assisted iterative optimization magnetic field compensation algorithm is proposed. A pT-level compensation resolution with an error below 1.6% is achieved, which lays the foundation for the subsequent application of biomagnetic measurement arrays. Full article
(This article belongs to the Special Issue Advances in Magnetic Sensors: Innovations, Challenges and Applications)
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