Recent advances in biomagnetism and its applications

Im, Chang-Hwan; Jun, Sung Chan; Sekihara, Kensuke

doi:10.1007/s13534-017-0042-3

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…After the cell's treatment with one or three impulses with the adsorbed dose (AD) of one impulse was 0.163 J/g and of three impulses with 0.490 J/g, was the growth index inhibition expressed in percentage. The results presented in Table 2 and Figure 4 show the following: 4 Henrietta lacks cervical tumor immortal cell line.…”

Section: The Growth Parameters and Percentage Of Dead Cells After 72 mentioning

confidence: 92%

“…They are of very short forces that can be compared to this duration and are in the range of milliseconds to seconds. Usually they do not result in any important alteration in the system [3,4]. On the contrary, the biological effects that an electric field with a field force below 1-10 mV/cm causes to a cell are likely due to interaction mechanisms occurring in the cell membrane.…”

Section: Introductionmentioning

confidence: 99%

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Square-Wave Electric Impulses of 10 ms and 100 V/cm of Field Force, Produced by PGen-1 Impulse Generator Device, Affect the Proliferation Patterns of Different Animal Cells

Filipič¹,

Gradišnik²,

Kovacs³

et al. 2020

Electromagnetic Field Radiation in Matter

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Section: The Growth Parameters and Percentage Of Dead Cells After 72 mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Square-Wave Electric Impulses of 10 ms and 100 V/cm of Field Force, Produced by PGen-1 Impulse Generator Device, Affect the Proliferation Patterns of Different Animal Cells

Filipič¹,

Gradišnik²,

Kovacs³

et al. 2020

Electromagnetic Field Radiation in Matter

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show abstract

“…Biomagnetism is the measurement and analysis of extremely weak magnetic fields generated by living organisms such as brain, heart, muscles, and nerves; or the detection of magnetic fields emanating from the contaminating magnetic impurities in human organs such as lungs, liver, and stomach. [ 1 ] Electric and magnetic fields are orthogonally coexisted in space when moving charges in living tissues form an ionic current. Therefore, detection of both bioelectric and biomagnetic signals are effective approaches for medical diagnosis and health monitoring.…”

Section: Introductionmentioning

confidence: 99%

Thin Film Magnetoelectric Sensors Toward Biomagnetism: Materials, Devices, and Applications

Dong

Liang

Gao

et al. 2022

Adv Elect Materials

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Since the discovery of strong magnetoelectric (ME) coupling in two‐phase ME laminate composites, strain mediated ME heterostructures have found practical applications in magnetic sensors, tunable inductors, tunable filters, miniaturized antennas, magnetic memories, and nanoscale motors. Thin film ME sensors, in particular, have become promising candidates in biomagnetic sensing, due to their high sensitivity, CMOS compatibility, room temperature operation, and high spatial resolution. In this article, an overview is presented on different types of thin film ME sensors and their applications in biomagnetic measurement. First, the coupling structures, materials selection, and fabrication processes are introduced. Three different mechanisms of recently emerged ME sensors, including the magnetic modulation, electrical modulation, and delta‐E effect are presented. Their performance and noise analysis are also compared and discussed. Finally, real‐time applications of ME sensors in the detection of magnetic fields from different part of human body are presented and discussed. The review concludes with an outlook on future perspectives and challenges of thin film ME sensors for biomagnetic applications.

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“…However, magnetically recording has remained some technical challenges for over four decades. Compared to a high temporal resolution, its spatial resolution is restrained because of some elements such as limited sensor numbers, movement artifacts, intrinsically low signal-to-noise ratio (SNR), and cancellation of background magnetic noise in real-time [8]. Current technologies developed to detect such tiny magnetic field are exploring the use of superconducting quantum interference devices (SQUIDs) [9] and opticallypumped magnetometers (OPMs) [5].…”

Section: Introductionmentioning

confidence: 99%

High-Precision Biomagnetic Measurement System Based on Tunnel Magneto-Resistive Effect

Zuo

Nazarpour

Heidari

2020

2020 27th IEEE International Conference on Electronics, Circuits and Systems (ICECS)

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This paper presents a novel low-noise and highprecision readout circuit for tunnelling magnetoresistive (TMR) array to evaluate the suitability of biomagnetic measurement platform for detection of weak biomagnetic fields. We propose a three operational-amplifier architecture with a high input impedance and an adjustable gain for the fabricated TMR sensor that is highly miniaturized and can be operated at room temperature. The proposed system was designed using standard 0.18 µm CMOS technology and achieved a good performance with regard to gain, linearity, power consumption, and noise by employing a chopper stabilization technique and common mode feedback. The gain can reach 80 dB through adjusting two 5-bit programmable resistors and the input-referred noise voltage only has 44.6 nV/√Hz with 10 nA input bias over a wide range of frequency. Moreover, the whole readout dissipates 58 µW of power with a 1.8 V supply voltage. Benefiting from the CMOS compatibility of the TMR sensor, it offers monolithic integration directly on a silicon substrate as a TMR-on-chip sensing system. This will enable a new scientific and engineering paradigm to revitalize the biomagnetism field as an alternative way to understand the underlying mechanism of the human body.

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Recent advances in biomagnetism and its applications

Cited by 6 publications

References 11 publications

Square-Wave Electric Impulses of 10 ms and 100 V/cm of Field Force, Produced by PGen-1 Impulse Generator Device, Affect the Proliferation Patterns of Different Animal Cells

Square-Wave Electric Impulses of 10 ms and 100 V/cm of Field Force, Produced by PGen-1 Impulse Generator Device, Affect the Proliferation Patterns of Different Animal Cells

Thin Film Magnetoelectric Sensors Toward Biomagnetism: Materials, Devices, and Applications

High-Precision Biomagnetic Measurement System Based on Tunnel Magneto-Resistive Effect

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