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Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

1.5K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
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Ferromagnetism01:31

Ferromagnetism

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Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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Updated: Jun 4, 2025

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A High-Precision Real-Time Temperature Acquisition Method Based on Magnetic Nanoparticles.

Yuchang Zhu1, Li Ke1, Yijing Wei1

  • 1School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China.

Sensors (Basel, Switzerland)
|December 17, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces advanced magnetic nanoparticle methods for precise, noninvasive temperature sensing in medicine. Optimized algorithms significantly improve real-time temperature inversion accuracy and speed.

Keywords:
harmonic amplitudemagnetic nanoparticlemagnetothermal equationtemperature inversion

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Magnetic nanoparticles (MNPs) possess unique magnetothermal properties valuable for biomedical applications.
  • Accurate, real-time, noninvasive temperature monitoring is crucial in various medical fields.
  • Existing methods may lack the required precision or real-time capabilities.

Purpose of the Study:

  • To develop a high-precision, real-time, noninvasive temperature measurement method using magnetic nanoparticles.
  • To enhance harmonic information acquisition by analyzing and optimizing parameters like truncation error, frequency, and amplitude.
  • To design and compare advanced algorithms for accurate temperature inversion.

Main Methods:

  • Construction of alternating current-direct current superposition and dual-frequency superposition magnetic field excitation models.
  • Analysis of truncation error, excitation magnetic field frequency, and amplitude effects on accuracy.
  • Development of a single temperature inversion algorithm and a joint optimization algorithm.
  • Implementation of the autonomous group particle swarm optimization (AGPSO) method for real-time performance.

Main Results:

  • Optimal parameter values were selected to minimize errors in harmonic information acquisition.
  • The AGPSO method demonstrated superior real-time performance and reduced running time compared to other optimizers (52% and 68% reduction).
  • Dual-frequency excitation with AGPSO achieved higher temperature inversion accuracy, reducing error from 0.237 K to 0.094 K.

Conclusions:

  • The proposed magnetic nanoparticle-based temperature measurement method offers high precision and real-time capabilities.
  • Optimized magnetic field excitation models and advanced algorithms like AGPSO significantly improve temperature inversion accuracy and efficiency.
  • This technology holds substantial potential for advancing noninvasive temperature monitoring in biomedical applications.