ArticleJournal of applied physics2020
AC magnetometry with active stabilization and harmonic suppression for magnetic nanoparticle spectroscopy and thermometry.
Article in Journal of applied physics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- A High-Precision Real-Time Temperature Acquisition Method Based on Magnetic Nanoparticles.Sensors (Basel, Switzerland) · 2024Article
- Thermosensitivity through Exchange Coupling in Ferrimagnetic/Antiferromagnetic Nano-Objects for Magnetic-Based Thermometry.ACS applied materials & interfaces · 2023Article
- Advanced characterization of magnetization dynamics in iron oxide magnetic nanoparticle tracers.Applied physics letters · 2022Article
- Magnetic Particle Spectroscopy with One-Stage Lock-In Implementation for Magnetic Bioassays with Improved Sensitivities.The journal of physical chemistry. C, Nanomaterials and interfaces · 2021Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Magnetic nanoparticle (MNP) thermometry based on magnetic particle spectroscopy (MPS) is explored as a potential approach for realizing in-situ temperature measurement of 3D objects. MNP thermometry relies on the nonlinear magnetization response to an AC drive field. This nonlinear response has functional dependence on frequency and temperature, governed by the complex magnetization dynamics of MNPs suspended in solution. In this work, we introduce our approach for accurate and precise AC magnetization measurements using actively stabilized drive fields ranging from DC to 10 kHz. To isolate the harmonic response of MNPs from the drive field, we also perform active cancellation to reach drive field suppression up to 120 dB. Active stabilization and cancellation are utilized for real-time, sensitive measurements of AC magnetization of commercial samples, with stability on the timescale of hours. Initial results for MNP thermometry are demonstrated using this technique, and we achieved a total temperature uncertainty of 410 mK and 170 mK at 100 ms and 10 s integration time, respectively.
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Registered trials
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