Zimoch Lukas, Schröder Stefan, Elzenheimer Eric, Kaps Sören, Strunskus Thomas, Faupel Franz, Höft Michael, Adelung Rainer
Functional Nanomaterials, Department of Materials Science, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany.
Chair for Multicomponent Materials, Department of Materials Science, Kiel University, Kaiserstr. 2, 24143, Kiel, Germany.
Sci Rep. 2025 Jan 10;15(1):1561. doi: 10.1038/s41598-024-85069-6.
The pursuit for advanced magnetoelectric field sensors has gained momentum, driven by applications in various fields, ranging from biomedical applications to soft robotics and the automotive sector. In this context, a capacitive read-out based magnetostrictive polymer composite (MPC) sensor element is introduced, offering a new perspective on magnetic field detection. The sensor element's unique feature is the possibility to independently tailor its mechanical and magnetic properties. When compared to other composite-based magnetic field sensors, the limit of detection (LoD) is three orders of magnitude lower (95.6 nT/√Hz at a resonance frequency of 160.5 Hz). In contrast to other electret-based ME sensors, the LoD is reduced by a factor of 20. To the best of the authors' knowledge, this work marks the first comprehensive attempt to characterize a sensor magnetically, aligning with the thorough assessment standards of ME sensors. This study aims to narrow the disparity between established magnetic field sensors, featuring consistent characterization protocols, and the novel MPC sensors, which often undergo limited magnetic characterization as part of their evaluation. The presented sensor, built from readily available materials, offers a versatile and tuneable platform for magnetic field detection, and ongoing research aims to unlock its full potential in diverse applications.
在从生物医学应用到软体机器人技术以及汽车领域等各个领域的应用推动下，对先进磁电场传感器的追求日益高涨。在此背景下，引入了一种基于电容读出的磁致伸缩聚合物复合材料（MPC）传感器元件，为磁场检测提供了新的视角。该传感器元件的独特之处在于能够独立调整其机械和磁性能。与其他基于复合材料的磁场传感器相比，其检测限（LoD）低三个数量级（在160.5 Hz的共振频率下为95.6 nT/√Hz）。与其他基于驻极体的磁电传感器相比，检测限降低了20倍。据作者所知，这项工作标志着首次全面尝试对传感器进行磁性表征，符合磁电传感器的全面评估标准。本研究旨在缩小具有一致表征协议的成熟磁场传感器与新型MPC传感器之间的差距，新型MPC传感器在评估过程中通常只进行有限的磁性表征。所展示的传感器由现成材料制成，为磁场检测提供了一个通用且可调节的平台，正在进行的研究旨在挖掘其在各种应用中的全部潜力。
