Generation of a planar direct-current glow discharge in atmospheric pressure air using rod array electrode

Li, Xuechen; Zhang, Panpan; Jia, Pengying; Chu, Jingdi; Chen, Junying

doi:10.1038/s41598-017-03007-1

Cited by 8 publications

(4 citation statements)

References 42 publications

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“…Considering that this continuum emission was not observed in the case of 1.24 mA discharge, it could be concluded that it comes from the white area of the plasma (Figure 4f,h), which does not appear in the case of low current (Figure 4b,d). Taking into account the higher power of the discharge, white continuum emission could be attributed to the overlapping of abundant energy levels for the diatomic molecule (N 2 (B-A)) and black body radiation [16], [47], [48].…”

Section: Overview Optical Emission Spectramentioning

confidence: 99%

Generation and Diagnostics of Ambient Air Glow Discharge in Centimeter-Order Gaps

et al. 2020

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Re-pulsing glow discharges in gaps up to 2 cm were experimentally investigated in atmospheric pressure air. Discharge was ignited as a sequence of spark and glow discharge and sustained in a glow regime after ignition. It was confirmed that the discharge with defined parameters could be ignited without any adjustments after initiation of the discharge. The discharges were characterized by a high-speed camera, current and voltage measurements, and optical emission spectrometry (OES). Typical structure of the glow discharge consisting of cathode glow, dark faraday space, positive column, and anode glow was observed. Transition from subnormal to normal glow mode was confirmed by analysis of current and voltage waveforms. It was found by OES that the type of discharge strongly affects the ratio of produced reactive species. It was confirmed that with change of discharge from subnormal to normal glow regime, rotational temperature could vary across a wide range (from 1650 to 3500 K). The developed device allows glow discharge to be ignited with defined parameters, which makes the control of the gas temperature and ratio of reactive species possible by presetting the discharge parameters. Additionally, it was demonstrated that corona discharge or repeating spark discharges could also be generated using the developed device without additional manipulations of the experimental setup by adjusting the discharge parameters.INDEX TERMS Glow discharge, gliding arc, OES, air plasma.

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Section: Overview Optical Emission Spectramentioning

confidence: 99%

Generation and Diagnostics of Ambient Air Glow Discharge in Centimeter-Order Gaps

et al. 2020

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“…To prevent the unwanted transition of glow to arc discharge, a dielectric barrier that can easily control the current during discharge is commonly used, thus resulting in AC discharge [ 19 , 20 , 21 , 22 , 23 ]. When generating a DC discharge, it is common to expose the powered electrode to the discharge space, include a proper ballast resistor in the circuit to control the current, and ground the counter electrode [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. However, even when the tip of the tungsten wire electrode of the newly designed AP-plasma reactor was exposed to the discharge space, a ballast resistor was not needed because the AC voltage was applied at a frequency of about 30 kHz, and the glow discharge occurred in a single electrode structure without a ground electrode.…”

Section: Resultsmentioning

confidence: 99%

Transparent Polyaniline Thin Film Synthesized Using a Low-Voltage-Driven Atmospheric Pressure Plasma Reactor

et al. 2021

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The use of low-voltage-driven plasma in atmospheric pressure (AP) plasma polymerization is considered as a simple approach to reducing the reactivity of the monomer fragments in order to prevent excessive cross-linking, which would have a negative effect on the structural properties of the polymerized thin films. In this study, AP-plasma polymerization can be processed at low voltage by an AP-plasma reactor with a wire electrode configuration. A bare tungsten wire is used as a powered electrode to initiate discharge in the plasma area (defined as the area between the wide glass tube and the substrate stand), thus allowing plasma polymerization to proceed at a lower voltage compared to other AP-plasma reactors with dielectric barriers. Thus, transparent polyaniline (PANI) films are successfully synthesized. The surface morphology, roughness, and film thickness of the PANI films are characterized by field emission scanning electron microscopy and atomic force microscopy. Thus, the surface of the polymerized film is shown to be homogenous, smooth, and flat, with a low surface roughness of 1 nm. In addition, the structure and chemical properties of the PANI films are investigated by Fourier transform infrared spectroscopy, thus revealing an improvement in the degree of polymerization, even though the process was performed at low voltage.

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“…Therefore, glow mode is desirable in a wide range of applications where there is a need for uniform treatment, such as biomedical applications 2 , surface modification 4,5 , and gas conversion 6 . Although glow discharge is formed simply under low pressure, on an industrial scale, the use of atmospheric pressure plasma is superior to the use of low pressure plasma due to the lack of vacuum equipment 7 . Organization of glow mode in DBD at atmospheric pressure with electronegative gases such as air, in which recombination of electrons is not negligible, is a challenging problem due to the week memory effect [2][3] .…”

Section: Introductionmentioning

confidence: 99%

“…Organization of glow mode in DBD at atmospheric pressure with electronegative gases such as air, in which recombination of electrons is not negligible, is a challenging problem due to the week memory effect [2][3] . The most of attempts to create a glow discharge at atmospheric pressure led to the creation of this discharge under limited conditions, such as the creation of a glow discharge under very small millimeter gaps 4,7 and using noble gases, such as helium and neon [8][9][10][11] to create a large gap, which on an industrial scale is not economically feasible. creating a discharge in ambient air is more effective due to the presence of active species of oxygen and nitrogen (ROS and RNS), which play a fundamental role in many plasma applications 12 .…”

Section: Introductionmentioning

confidence: 99%

Development of atmospheric pressure air dielectric barrier glow discharge in large gaps through modulation of pulsed power supply upon AC

Haghani,

Seyfi,

Ghomi

2024

Preprint

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The development of dielectric barrier discharge (DBD) in glow mode in large gaps in air at atmospheric pressure, due to providing diffuse, uniform, safe, and economic treatments for a wide range of substrates and for many applications, could be a beneficial way to enhance cold plasma applications in various industries. Here, we generated a glow DBD that has a volume-surface coupling geometrical structure in a 1mm gap distance by a pulsed power supply and expanded the gap distance up to 2 cm by modulating the pulsed power supply on an AC one. The resulting glow discharges were studied by voltage-current waveform and atomic emission spectroscopy.

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Generation of a planar direct-current glow discharge in atmospheric pressure air using rod array electrode

Cited by 8 publications

References 42 publications

Generation and Diagnostics of Ambient Air Glow Discharge in Centimeter-Order Gaps

Generation and Diagnostics of Ambient Air Glow Discharge in Centimeter-Order Gaps

Transparent Polyaniline Thin Film Synthesized Using a Low-Voltage-Driven Atmospheric Pressure Plasma Reactor

Development of atmospheric pressure air dielectric barrier glow discharge in large gaps through modulation of pulsed power supply upon AC

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