Thermal poling of ferroelectrets: How does the gas temperature influence dielectric barrier discharges in cavities?

2016 ◽  
Vol 108 (25) ◽  
pp. 252901 ◽  
Author(s):  
Xunlin Qiu ◽  
Werner Wirges ◽  
Reimund Gerhard
Keyword(s):  
Dielectric Barrier Discharges ◽  
Temperature Influence ◽  
Gas Temperature ◽  
Dielectric Barrier ◽  
Thermal Poling ◽  
Barrier Discharges

Gas temperature measurement in CH4/CO2 dielectric-barrier discharges by optical emission spectroscopy

2003 ◽  
Vol 93 (8) ◽  
pp. 4432-4438 ◽  
Author(s):  
Jorge Luque ◽  
Martin Kraus ◽  
Alexander Wokaun ◽  
Ken Haffner ◽  
Ulrich Kogelschatz ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Emission Spectroscopy ◽  
Optical Emission Spectroscopy ◽  
Optical Emission ◽  
Dielectric Barrier Discharges ◽  
Gas Temperature ◽  
Dielectric Barrier ◽  
Barrier Discharges

scholarly journals Influence of the On-time on the Ozone Production in Pulsed Dielectric Barrier Discharges

Plasma ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 39-50 ◽  
Author(s):  
Faraz Montazersadgh ◽  
Alexander Wright ◽  
Junchen Ren ◽  
Alexander Shaw ◽  
Gabriele Neretti ◽  
...  
Keyword(s):  
Input Power ◽  
Ozone Production ◽  
Net Generation ◽  
Strong Temperature Dependence ◽  
Dielectric Barrier Discharges ◽  
Gas Temperature ◽  
Time Duration ◽  
Dielectric Barrier ◽  
Barrier Discharges ◽  
Production Mechanisms

Understanding the production mechanisms of ozone and other reactive species in atmospheric pressure dielectric barrier discharges (DBDs) has become increasingly important for the optimization and commercial success of these plasma devices in emerging applications, such as plasma medicine, plasma agriculture, and plasma catalysis. In many of these applications, input power modulation is exploited as a means to maintain a low gas temperature. Although the chemical pathways leading to ozone production/destruction and their strong temperature dependence are relatively well understood, the effect of the on-time duration on the performance of these modulated DBDs remains largely unexplored. In this study, we use electrical and optical diagnostics, as well as computational methods, to assess the performance of a modulated DBD device. The well-established Lissajous method for measuring the power delivered to the discharge is not suitable for modulated DBDs because the transients generated at the beginning of each pulse become increasingly important in short on-time modulated plasmas. It is shown that for the same input power and modulation duty-cycle, shorter on-time pulses result in significantly enhanced ozone production, despite their operation at slightly higher temperatures. The key underpinning mechanism that causes this counter-intuitive observation is the more efficient net generation rate of ozone during the plasma on-time due to the lower accumulation of NO2 in the discharge volume.

Progress in the Visualization of Filamentary Gas Discharges. Part 1: Milestones and Diagnostics of Dielectric-barrier Discharges by Cross-correlation Spectroscopy

2004 ◽  
Vol 7 (1) ◽  
Author(s):  
Hans-Erich Wagner ◽  
Ronny Brandenburg ◽  
Kirill V. Kozlov
Keyword(s):  
Cross Correlation ◽  
Correlation Spectroscopy ◽  
Dielectric Barrier Discharges ◽  
Gas Temperature ◽  
Plasma Parameters ◽  
Dielectric Barrier ◽  
Gas Discharges ◽  
Spatially Resolved ◽  
Excited Species ◽  
Barrier Discharges

AbstractFilamentary gas discharges at atmospheric pressure, namely dielectric-barrier discharges and coronas, produce highly non-equilibrium plasmas in a controllable way at a moderate gas temperature. They provide the effective generation of atoms, radicals and excited species by energetic electrons. Consequently, they have found many applications, among others in environmental protection. The controlled application of these discharges requires a good understanding of their physical properties and the knowledge of the basic plasma parameters. Milestones on this way and the progress in the plasma diagnostics are listed of. Recently, the technique of spatially resolved cross-correlation spectroscopy (CCS) (with a resolution in the sub-ns and sub-mm range) has been used to contribute to a better understanding of these discharges. The application of the CCS method is described in more detail.

Analysis of parameters of coaxial dielectric barrier discharges in argon flow at atmospheric pressure

2021 ◽  
Vol 129 (15) ◽  
pp. 153305
Author(s):  
Hui Li ◽  
Chengxun Yuan ◽  
Anatoly Kudryavtsev ◽  
Aleksandr Astafiev ◽  
Evgeny Bogdanov ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Dielectric Barrier Discharges ◽  
Dielectric Barrier ◽  
Argon Flow ◽  
Barrier Discharges

Degradation of glucocorticoids in water by a synergistic system of peroxymonosulfate, microbubble and dielectric barrier discharges

2021 ◽  
Vol 42 ◽  
pp. 102175
Author(s):  
Andere Clement Miruka ◽  
Ai Zhang ◽  
Qiancheng Wang ◽  
Dahai Zhu ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Dielectric Barrier Discharges ◽  
Dielectric Barrier ◽  
Barrier Discharges

Positive and negative streamer propagation in volume dielectric barrier discharges with planar and porous electrodes

2021 ◽  
Vol 18 (4) ◽  
pp. 2000234
Author(s):  
Quan‐Zhi Zhang ◽  
Li Zhang ◽  
De‐Zheng Yang ◽  
Julian Schulze ◽  
You‐Nian Wang ◽  
...  
Keyword(s):  
Porous Electrodes ◽  
Dielectric Barrier Discharges ◽  
Dielectric Barrier ◽  
Streamer Propagation ◽  
Barrier Discharges
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