Generation of field-emitting surface dielectric barrier discharges in Ar and N2

Kanno, Masayuki; Tanaka, Ryo; Stauss, Sven; Ito, Tsuyohito; Terashima, Kazuo

doi:10.1063/1.5093960

Cited by 5 publications

(13 citation statements)

References 27 publications

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“…Precautions are needed when designing surge protection for high‐temperature applications as the conduction mechanism across the air gap changes. These breakdown mechanisms, particularly the dielectric induced arcing, 9,13 have important implications for dielectric barrier discharge devices for generating plasma resources 33‐35 …”

Section: Discussionmentioning

confidence: 99%

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High‐voltage surge protection by a varistor‐filled air gap

et al. 2021

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The electric discharge across a varistor granule filled air gap under a fast-rising voltage pulse was investigated for surge protection applications. The effects of temperature and pressure on the arc and the electrical conduction were analyzed by the characteristic changes in voltage waveforms triggered by a fast-rising high voltage pulse.In addition to the gap size, experimental results show that competing mechanisms among arc conduction, conduction through the varistor granule network, thermionic emission from Joule heating at granule-to-granule contact points, and the magnitude of the switching voltage dictate the maximum surge protection voltage for the filled air gap. Experimental evidence indicated that accumulated degradation was created at small contact points between varistor granules by repetitive assaults from longer duration, high voltage pulses. The uniqueness of using varistor over other dielectric granules in an air gap for surge protection is identified and discussed.

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Section: Discussionmentioning

confidence: 99%

“…These breakdown mechanisms, particularly the dielectric induced arcing, 9,13 have important implications for dielectric barrier discharge devices for generating plasma resources. [33][34][35]…”

Section: Discussionmentioning

confidence: 99%

High‐voltage surge protection by a varistor‐filled air gap

et al. 2021

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“…This structure was essentially the same as that used in our previous research. [38][39][40][41][42][43][44] However, the difference exists only in the shape of the powered electrode, which was designed in a 10 mm × 5 mm comb shape to increase the discharge area. A DCbiased silicon substrate, with an area of 10 mm × 5 mm was used as the third electrode for depositing fine particles.…”

Section: Methodsmentioning

confidence: 99%

“…FESDBD has been observed in high-pressure CO 2 , N 2 , Ar, and liquid silicone oil, and its generality has been confirmed through numerous studies. [38][39][40][41][42][43][44] In high-density media, the generation of FESDBD has been confirmed at relatively low applied voltages compared to standard high-energy discharge methods; this is an attractive feature for the discharge process in liquids. In addition, FESDBD employs a simple electrode structure and creates a larger discharge area compared to the conventional needle electrodes used for emitting electrons via field emission.…”

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confidence: 96%

Communication—Development of Discharge-Assisted Electrophoretic Deposition and Demonstration for TiN Deposition

Kanno

Ito

Terashima

2021

ECS J. Solid State Sci. Technol.

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In this study, a novel electrophoretic deposition (EPD) method with field-emitting surface dielectric barrier discharges (FESDBDs) was developed. As the discharges are sustained by the electrons generated via the tunneling effect, FESDBDs are ideal for supplying charges by avoiding chemical reactions. Furthermore, since the particles are charged via FESDBDs, chemical pretreatments are not required to impart charge to the particles. Herein, as a first demonstration of a discharge-assisted EPD, a TiN film was deposited in silicone oil. Assuming that the deposition rate in this study was limited by the charging process of the particles, a new deposition model was constructed.

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“…The transition is also marked by an increase in the current up to several amperes per filament. SDBDs at even higher pressure (>1 MPa) can enter a field-emitting Townsend regime in which optical emission spectra are purely continuum in nature [16][17][18]. With the recent development of optical laser diagnostics, the electric field components associated with the surface ionization wave propagation are not only the subject of numerical studies [19,20] but have also been successfully measured [21,22].…”

Section: Introductionmentioning

confidence: 99%

Uniform propagation of cathode-directed surface ionization waves at atmospheric pressure

Darny¹,

Babonneau²,

Camelio³

et al. 2020

Plasma Sources Sci. Technol.

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The uniform propagation of positive-polarity surface plasmas in air at atmospheric pressure has been achieved using a multi-layer structure, consisting of a silicon wafer covered by a 1 µm thick dielectric SiO2 layer as a propagation surface. Instead of the branched streamers observed in the same conditions when using conventional bulk dielectric surfaces, the plasma exhibits a homogenous ring-shaped structure with a high degree of reproducibility and stability. The plasma is generated by applying nanosecond positive voltage pulses to a tungsten wire touching the dielectric surface. The plasma has been imaged in single shot operation at high spatial resolution with an ultraviolet reflective microscope coupled with a fast intensified charge-coupled device camera. Time-and space-resolved optical emission spectroscopy shows that the homogenous ring corresponds to the propagation of an ionization front with a region of high N2 + * emission. We discuss the origin of the ring-shaped ionization wave, considering the role of the Si-SiO2 interface and the effect of illumination by an external light source. The ring ionization wave may result from branching inhibition, due to a photoelectric effect at the interface created by the photons emitted by the plasma. The generation of stable uniform surface ionization waves, in ambient air at atmospheric pressure, could be of interest for further advanced plasma-surface interaction studies or flow control applications.

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Generation of field-emitting surface dielectric barrier discharges in Ar and N2

Cited by 5 publications

References 27 publications

High‐voltage surge protection by a varistor‐filled air gap

High‐voltage surge protection by a varistor‐filled air gap

Communication—Development of Discharge-Assisted Electrophoretic Deposition and Demonstration for TiN Deposition

Uniform propagation of cathode-directed surface ionization waves at atmospheric pressure

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