Visualization of Current Distribution by Subsurface Magnetic Field Imaging System for the Cockcroft-Walton Circuit and Their Components

Sumi, M.; Satoh, Nobuo

doi:10.1109/isie45552.2021.9576160

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…1−3 For conductive channel materials with a sufficiently large size, current paths can be visualized using discharge phenomena caused by high-frequency magnetic fields. 4 When an electrical bias is applied, current is induced in the material, and its path is deformed. The deformed material along the current path can be observed by scanning electron microscopy (SEM) or transmission electron microscopy (TEM) imaging.…”

Section: ■ Introductionmentioning

confidence: 99%

“…A fundamental understanding of the effective electrical current path in electronic devices is useful for designing device structures and developing advanced functions. − For conductive channel materials with a sufficiently large size, current paths can be visualized using discharge phenomena caused by high-frequency magnetic fields . When an electrical bias is applied, current is induced in the material, and its path is deformed.…”

Section: Introductionmentioning

confidence: 99%

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Effective Conduction Path of a C₆₀ Chain in a Nanogap Electrode

Takei,

Hirama,

Suga

et al. 2024

ACS Appl. Electron. Mater.

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The electrical current path of fullerene-derived films between microfabricated sharpened metal electrodes (gaps of 10−20 nm) was evaluated. When a high voltage was applied, a space-charge-limited current (SCLC) flowed through the fullerene film. The effective conduction path length estimated from the SCLC voltage was slightly longer than the shortest distance between the electrodes. This indicates that the effective current path was tortuous because of the amorphous packing of the spherical fullerenes. Correlations between the effective path length and switching parameters such as operating voltages were used to show that the minimum operating power required for a minimum-sized fullerene switch is expected to be in the subpicowatt range.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective Conduction Path of a C₆₀ Chain in a Nanogap Electrode

Takei,

Hirama,

Suga

et al. 2024

ACS Appl. Electron. Mater.

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“…M. Sumi and N. Satoh obtained the CD contribution on a Cockcroft-Walton circuit, a Schottky rectifier and a multi-layered ceramic capacitor. An electric short circuit spot was successfully observed by magneto-impedance sensor within an operation area of 50 × 50 mm 2 [11]. Mark G. Bason et al achieved internal CD magnitude imaging in lithium-ion batteries using fluxgate sensor arrays within a scanning area of 150 cm 2 to give a spatial resolution of 5 mm [7].…”

Section: Introductionmentioning

confidence: 99%

A Vectorial Current Density Imaging Method Based on Magnetic Gradient Tensor

Zhang

Peng

et al. 2023

Sensors

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Magnetic current imaging is deemed an emerging powerful technique for visualizing electrical currents in electronic devices. However, the existing magnetic-field-based Fourier Transform back-evolution method is limited by its mono-function of imaging the magnitude of current density in devices under test, and subject to background noise distortion. Here, we developed a novel vectorial current density imaging method based on the detection of the magnetic field gradient generated by current carrying conductors. A closed form solution of current density inversion was analytically derived and numerically verified. Experiments were conducted by scanning tri-axial fluxgate sensor over different shapes of electrical wires. The results show that a current density resolution of 24.15 mA/mm2, probe-to-sample separation of 2 mm, and spatial resolution of 0.69 mm were achieved over a maximum scanning area of 300 mm × 300 mm. Such a method is verified to be capable of simultaneously imaging both magnitude and directions of current density, which is a promising technique for in situ noninvasive inspection for the power electronic and semiconductor industry.

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Visualization of Current Distribution by Subsurface Magnetic Field Imaging System for the Cockcroft-Walton Circuit and Their Components

Cited by 2 publications

References 6 publications

Effective Conduction Path of a C₆₀ Chain in a Nanogap Electrode

Effective Conduction Path of a C₆₀ Chain in a Nanogap Electrode

A Vectorial Current Density Imaging Method Based on Magnetic Gradient Tensor

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Visualization of Current Distribution by Subsurface Magnetic Field Imaging System for the Cockcroft-Walton Circuit and Their Components

Cited by 2 publications

References 6 publications

Effective Conduction Path of a C60 Chain in a Nanogap Electrode

Effective Conduction Path of a C60 Chain in a Nanogap Electrode

A Vectorial Current Density Imaging Method Based on Magnetic Gradient Tensor

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Effective Conduction Path of a C₆₀ Chain in a Nanogap Electrode

Effective Conduction Path of a C₆₀ Chain in a Nanogap Electrode