Magnetic nanoparticles colourization by a mixing-frequency method

Tu, Liang; Wu, Kai; Klein, Todd; Wang, Jian Ping

doi:10.1088/0022-3727/47/15/155001

Cited by 37 publications

(46 citation statements)

References 23 publications

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“…For iron oxide nanoparticles with diameter larger than 20 nm, Brownian relaxation dominates, and Neel relaxation becomes the dominant factor when particle's diameter is less than 20 nm [4]. In this experiment, we used SHP-10 MNPs for which Neel relaxation dominates, and Brownian relaxation dominates for SHP-25.…”

Section: Resultsmentioning

confidence: 99%

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Colorize magnetic nanoparticles using a search coil based testing method

Wu¹,

Wang²,

Feng³

et al. 2015

Journal of Magnetism and Magnetic Materials

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Section: Resultsmentioning

confidence: 99%

“…In this paper we investigate the possibility of detecting different kinds of MNPs in one test. Our experiment is based on a mixing frequency method [3,4]. Two sinusoidal magnetic fields are applied to the MNP solution sample simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Colorize magnetic nanoparticles using a search coil based testing method

Wu¹,

Wang²,

Feng³

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…The magnetic frequency mixing technology is of particular interest here [5,6]. In experiments employing magnetic frequency mixing, a ferromagnetic material is usually exposed to an AC magnetic field consisting of two frequencies [7]. The low-frequency component of the magnetic field drives periodically the material into its saturation magnetization regime, whereas the high-frequency component is weaker and can only be dispersed near the surface of the material.…”

Section: Introductionmentioning

confidence: 99%

Application of Uniform Experimental Design in Optimizing Excitation Parameters for Magnetic Frequency Mixing Measurements

Chang

Jiao

Liu

et al. 2020

Chin. J. Mech. Eng.

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Excitation parameter preferences are key factors affecting the performance of magnetic frequency mixing detection. A uniform experimental design method was used to analyze this influence. Using fuzzy theory, a comprehensive model is established for evaluating the effect of magnetic frequency mixing. A polynomial is selected as the regression function to express explicitly the correlation between the excitation parameters and the frequency-mixing effect. The excitation parameters were then optimized using genetic algorithm. Magnetic frequency mixing experiments were conducted to measure the surface hardness of some ferromagnetic materials. Frequency mixing is further enhanced under the optimal settings, resulting in an improvement in the measurement sensitivity. The results of this study support the application of the magnetic frequency mixing technique in non-destructive testing. , respectively. He is currently a professor at Beijing University of Technology. His main research interests include mechanical testing theory method and technology, ultrasonic nondestructive testing technology, and sensor technology. Bin Wu received his BS, MS and PhD degree in 1984, 1990 and 1996 from Tianjin University, Beijing University of Aeronautics and Astronautics and Taiyuan University of Technology, respectively. He is currently a professor at Beijing University of Technology. His main research interests include experimental solid mechanics, modern measurement and control technology, nondestructive testing of new technology, and new sensor technology.

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“…We assumed a typical detection coil system with two driving field coils and one detection coil. 17,[19][20][21][22][23] Two alternating magnetic fields (AMFs) are applied to MNPs, one with low frequency f L but high amplitude A L , and the other with high frequency f H but low amplitude A H , expressed as…”

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confidence: 99%

“…Thus, it is possible to identify a specific type of MNP tracer from another. 21 The voltage of any one of the MNPs at a specific frequency is represented by a phasor whose amplitude, angular frequency, and phase are time-invariant. 21 Thus, the phasor from a mixture of multi-MNP tracers is simply the weighed sum of multiple phasors.…”

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confidence: 99%

A simulation study on superparamagnetic nanoparticle based multi-tracer tracking

Batra

Jain

et al. 2015

Applied Physics Letters

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Superparamagnetic nanoparticles (MNPs) have been utilized in biomedical sensing, detection, therapeutics, and diagnostics due to their unique magnetic response under different driving fields. In this letter, we report a multi-tracer tracking method that uses different kinds of MNPs as magnetic tracers along with two alternating magnetic fields that can be potentially used to build magnetic-based flow cytometry. By applying two driving fields at frequency f H and f L to MNPs, the response signal is measured at the combinatorial frequencies such as f H 62f L (3rd harmonics), f H 64f L (5th harmonics), f H 66f L (7th harmonics), and so on. Each MNP has its own signature of phase and amplitude, and it is possible to differentiate individual MNPs in a mixture. We theoretically demonstrated colorizing up to 4-MNP tracers in one mixture with an error rate lower than 10%. The performance of multi-tracer imaging can be optimized by increasing the driving field frequency, choosing MNPs with higher saturation magnetization, and using MNP tracers with more centralized size distribution. V

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Magnetic nanoparticles colourization by a mixing-frequency method

Cited by 37 publications

References 23 publications

Colorize magnetic nanoparticles using a search coil based testing method

Colorize magnetic nanoparticles using a search coil based testing method

Application of Uniform Experimental Design in Optimizing Excitation Parameters for Magnetic Frequency Mixing Measurements

A simulation study on superparamagnetic nanoparticle based multi-tracer tracking

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