A Remote Noninvasive Thermometer Based on Faraday Rotation of Magnetic Nanoparticles

Magnetic nanoparticles (MNPs) are temperature sensitive, making them useful as probes for measuring cellular temperature. In this article, we propose a remote noninvasive thermometer that replaces a traditional magnetic sensor with linearly polarized light as the transmission medium, utilizing the F...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2025, Vol.74, p.1-9
Main Authors: Cui, Xinchao, Lu, Chong, Liu, Chunping, Buczynski, Ryszard, Liu, Wenzhong
Format: Article
Language:English
Subjects:
Accuracy
Error analysis
Faraday effect
Faraday rotation
Harmonic analysis
Imaging
Linear polarization
Magnetic field measurement
Magnetic fields
magnetic nanoparticles (MNPs)
Magnetization
Nanoparticles
Polarized light
remote noninvasive thermometer
root-mean-square error (RMSE)
Root-mean-square errors
Sensitivity
temperature imaging
Temperature measurement
Temperature sensors
Thermometers
Thermometry
Tissues
Citations: Items that this one cites
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Summary:Magnetic nanoparticles (MNPs) are temperature sensitive, making them useful as probes for measuring cellular temperature. In this article, we propose a remote noninvasive thermometer that replaces a traditional magnetic sensor with linearly polarized light as the transmission medium, utilizing the Faraday rotation of MNPs. This method not only overcomes the limitations of distance on temperature measurement accuracy but also offers strong anti-interference capabilities. Using this thermometer, we measured the cooling process of MNPs within a temperature range of 310-316 K, achieving an estimated temperature root-mean-square error (RMSE) of 0.14 K. This approach shows promise for integration with microscopy systems for temperature imaging of cells or biological tissues, potentially revealing new biological insights.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2024.3522686