Generation of uniform discharge by dielectric barrier discharge device in atmospheric‐pressure air

Osawa, Naoki; Yoshioka, Yoshio; Hanaoka, Ryoichi; Mochizuki, Yutarou; Kobayashi, Yusuke; Yamada, Yuta

doi:10.1002/eej.21253

Cited by 8 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The slope of (2) increases during the discharge and has a slight bulge compared to slope (4), as seen in figure 5(b). Differences between halfcycles in asymmetric DBD configurations have been observed previously by Osawa et al and Stollenwerk et al; the former observing alternating Townsend and filamentary discharges by using alumina and soda-glass on opposing electrodes, the latter observing offsets in the charge accumulation between half-cycles on a BSO crystal acting as the barrier on one electrode and ITO on the other [27][28][29]. Similar effects may be at play here and only the more constant slope of ( 4) is used to determine the effective dielectric capacitance.…”

Section: Capacitances From the Q-v Parallelogramssupporting

confidence: 60%

The influence of partial surface discharging on the electrical characterization of DBDs

Peeters¹,

Sanden²

2014

Plasma Sources Sci. Technol.

101

View full text Add to dashboard Cite

The determination of internal electrical discharge parameters, such as plasma current and burning voltage, in dielectric barrier discharges (DBDs) relies on an equivalent circuit based on series capacitances for the discharge gap and dielectric material. An effective dielectric capacitance for the discharge can be obtained from Q-V diagrams, also called Lissajous figures, during discharging, which may not be a constant for a given DBD geometry. It has been shown experimentally that microdischarges, which can consist of narrow channels in either diffuse or filamentary form, may not fully cover the available discharge area. Here, we report measurements of the effective dielectric capacitance as a function of applied voltage amplitude in a DBD plasma jet system operating in N 2 and derive equations to determine the conductively transferred charge, burning voltage and the proportion of the electrode surface over which discharging occurs when the effective dielectric capacitance is not equal to the dielectric capacitance of the complete electrode area.

show abstract

Section: Capacitances From the Q-v Parallelogramssupporting

confidence: 60%

The influence of partial surface discharging on the electrical characterization of DBDs

Peeters¹,

Sanden²

2014

Plasma Sources Sci. Technol.

101

View full text Add to dashboard Cite

show abstract

“…Looking at the figure more precisely, it can be seen that the inception of the discharges became faster with the increase of O 2 content. Gap voltage during discharge can be calculated from the difference of voltages applied to the DBD device and to the barrier plates [14]. The gap voltages thus calculated are also shown in Figure 2a.…”

Section: Methodsmentioning

confidence: 99%

Effect of nitrogen addition to ozone generation characteristics by diffuse and filamentary dielectric barrier discharges at atmospheric pressure

Osawa

Tsuji

Ogiso

et al. 2017

Eur. Phys. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Abstract. Ozone is widely used for gas treatment, advanced oxidation processes, microorganisms inactivation, etc. In this research, we investigated the effect of nitrogen addition to ozone generation characteristics by atmospheric pressure Townsend discharge (APTD) type and filamentary dielectric barrier discharge (DBD) type ozone generators. The result showed that the ozone generated by the filamentary DBD increases rapidly with the increase of O 2 content, and is higher than that by the APTD. On the other hand, it is interesting that the ozone generated by the APTD gradually decreases with the increase of O2 content. In order to clarify why the characteristics of ozone generation by the two kinds of discharge modes showed different dependency to the N2 content, we analyzed the exhaust gas composition using FTIR spectroscopy and calculated the rate coefficients using BOLSIG+ code. As a result, we found that although O2 content decreased with increasing N2 content, additional O atoms produced by excited N2 molecules contribute to ozone generation in case of APTD.

show abstract

“…This explains the intensive effort of the plasma community to invent novel DBD configurations and perform experimental and theoretical research on DBD plasma regimes. The numerous original papers and comprehensive reviews relevant to these topics [29][30][31][32][33][34][35][36][37][38][39][40] can serve as an evidence for this statement.…”

Section: Introductionmentioning

confidence: 93%

About the possible source of seed electrons initiating the very first breakdown in a DBD operating with the air at atmospheric pressure

Akishev

Karalnik

Medvedev

et al. 2021

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

The conditions of the very first breakdown happening in a periodical dielectric barrier discharge (DBD) are not the same as those in the discharge established regime. The main intriguing problem in the very first breakdown is the source of the initial seed electrons. In this work, the role of atmospheric small negative ions in the appearance of seed electrons is investigated. The very first breakdown was studied by using a pin-to-plane barrier corona and plane-to-plane DBD operated with ambient air. These discharges were driven by fast- and slow-growing applied voltage. The experimental data related to the very first breakdown are presented. A short summary sounds as follows. In the case of a barrier corona initiated by a fast-growing voltage, seed electrons can appear due to their detachment from background negative ions in the bulk. Under a slow-increasing voltage, background ions have the time to be fully adsorbed on the cathode and the anode long before breakdown occurs. In such a case, seed electrons can appear from negative ions desorbed from the cathode. This desorption is induced by a strong electric field in the gap. The latter mechanism can work in a plane-to-plane DBD driven by both fast- and slow-growing applied voltage. Based on numerical calculations, a qualitative explanation of the obtained results is given. The influence of UV irradiation on the very first breakdown was also studied.

show abstract

Generation of uniform discharge by dielectric barrier discharge device in atmospheric‐pressure air

Cited by 8 publications

References 10 publications

The influence of partial surface discharging on the electrical characterization of DBDs

The influence of partial surface discharging on the electrical characterization of DBDs

Effect of nitrogen addition to ozone generation characteristics by diffuse and filamentary dielectric barrier discharges at atmospheric pressure

About the possible source of seed electrons initiating the very first breakdown in a DBD operating with the air at atmospheric pressure

Contact Info

Product

Resources

About