Atmospheric and sub-atmospheric dielectric barrier discharges in helium and nitrogen

Sublet, A.; Ding, Cong; Dorier, J.‐L.; Hollenstein, Ch.; Fayet, Pierre; Coursimault, Fabien

doi:10.1088/0963-0252/15/4/006

Cited by 84 publications

(50 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low PRR is consistent with other reported work where in the 1-20 kHz range it has a weak influence on the breakdown voltage. 15 The reason for the high pulse repetition rate limit is unclear from this graph. Clarification of this point is discussed in Sec.…”

Section: B Secondary Coil Power Performancementioning

confidence: 95%

“…A helium volume discharge is also compared to study the high pressure Penning ionization process ͑impact of high energy helium metastables on nitrogen impurities in the helium working gas͒. 15 The technology developments described here include continuous power switching of a 1-1.6 kV 3.5 s pulse at an 8-80 kHz pulse repetition rate ͑PRR͒ to deliver an applied power of 30-40 W at the coaxial dielectric barrier anode.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Handheld Flyback driven coaxial dielectric barrier discharge: Development and characterization

Law

Milosavljević

O’Connor

et al. 2008

Review of Scientific Instruments

View full text Add to dashboard Cite

This work is licensed under a Creative Commons AttributionNoncommercial-Share Alike 3.0 License Recommended Citation V. Law, et al., (2008) The development of a handheld single and triple chamber atmospheric pressure coaxial dielectric barrier discharge driven by Flyback circuitry for helium and argon discharges is described. The Flyback uses external metal-oxide-semiconductor field-effect transistor power switching technology and the transformer operates in the continuous current mode to convert a continuous dc power of 10-33 W to generate a 1.2-1.6 kV 3.5 s pulse. An argon discharge breakdown voltage of ϳ768 V is measured. With a 50 kHz, pulse repetition rate and an argon flow rate of 0.5-10 argon slm ͑slm denotes standard liters per minute͒, the electrical power density deposited in the volume discharge increases linearly at a rate of 75Ϯ 20% mW/ cm 3 per 1 slm of gas. Electrical power transfer efficiency between the secondary Flyback coil and the discharge volume increases from 0.1% to 0.65%. Neutral argon gas forced convection analysis yields a similar energy loss rate to the electrical discharge process. Optical emission spectroscopy studies of the expanding discharge plume into ambient air reveal that the air climatically controls the plume chemistry to produce an abundance of neutral argon atoms and molecular nitrogen.

show abstract

Section: B Secondary Coil Power Performancementioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Handheld Flyback driven coaxial dielectric barrier discharge: Development and characterization

Law

Milosavljević

O’Connor

et al. 2008

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

“…Helium was used as the carrier gas because the breakdown voltage of helium is significantly lower than nitrogen [33]. In addition, the low excitation energy level of argon metastables (11.7 and 11.5 eV) in comparison with helium (20.6 and 19.8 eV) does not allow an efficient Penning ionization to sustain the discharge [34]. Based on initial testing, 1-5 min with 40-80 power, and 30-120 s with 20-40 power, were chosen as an effective range for 3 L/min and 1 L/min, respectively.…”

Section: Reduction Of Cell Viability By Cap In Malignant Solid Tumor mentioning

confidence: 99%

The Canady Helios Cold Plasma Scalpel Significantly Decreases Viability in Malignant Solid Tumor Cells in a Dose-Dependent Manner

Rowe¹,

Cheng²,

Ly³

et al. 2018

Plasma

View full text Add to dashboard Cite

Abstract:To determine appropriate treatment doses of cold atmospheric plasma (CAP), the Canady Helios Cold Plasma Scalpel was tested across numerous cancer cell types including renal adenocarcinoma, colorectal carcinoma, pancreatic adenocarcinoma, ovarian adenocarcinoma, and esophageal adenocarcinoma. Various CAP doses were tested consisting of both high (3 L/min) and low (1 L/min) helium flow rates, several power settings, and a range of treatment times up to 5 min. The impact of cold plasma on the reduction of viability was consistently dose-dependent; however, the anti-cancer capability varied significantly between cell lines. While the lowest effective dose varied from cell line to cell line, in each case an 80-99% reduction in viability was achievable 48 h after CAP treatment. Therefore, it is critical to select the appropriate CAP dose necessary for treating a specific cancer cell type.

show abstract

“…In contrast, a DBD operating in the glow mode [atmospheric pressure glow discharge (APGD)] is characterised by one current pulse per half cycle [42][43][44]. Besides these two well-known regimes, some authors also report on what they call the pseudoglow or multi-peak mode [44][45][46]. This regime is characterised by the presence of successive current pulses of usually diminishing amplitude, with the width of each pulse representing the duration of a glow discharge which extends over the entire surface of the electrodes [44,46].…”

Section: Electrical Characterisation Of the Discharge And Deposition mentioning

confidence: 99%

Deposition of Polyacrylic Acid Films by Means of an Atmospheric Pressure Dielectric Barrier Discharge

Morent

Geyter

Vlierberghe

et al. 2009

Plasma Chem Plasma Process

View full text Add to dashboard Cite

The present work describes the plasma polymerisation of acrylic acid at atmospheric pressure. The influence of two operating parameters (monomer concentration and discharge power) on the properties of the deposited films is investigated. Results show that at a monomer concentration of 2.5 ppm and a discharge power of 9.5 W, the monomer is only slightly fragmented leading to a high amount of carboxylic acid groups on the deposited films. In contrast, when monomer concentration is decreased or discharge power increased, the incidence of monomer fragmentation processes is higher, leading to a lower amount of carboxylic acid groups on the films. This behaviour can be explained by a higher energy amount available per monomer molecule at low monomer concentrations and high discharge powers and a higher flux of positive ions attacking the surface at high discharge powers. Taking into account these results, it can be concluded that the deposition parameters should be carefully selected in order to preserve the stability of the monomer and thus obtain coatings with high carboxylic acid densities

show abstract

Atmospheric and sub-atmospheric dielectric barrier discharges in helium and nitrogen

Cited by 84 publications

References 31 publications

Handheld Flyback driven coaxial dielectric barrier discharge: Development and characterization

Handheld Flyback driven coaxial dielectric barrier discharge: Development and characterization

The Canady Helios Cold Plasma Scalpel Significantly Decreases Viability in Malignant Solid Tumor Cells in a Dose-Dependent Manner

Deposition of Polyacrylic Acid Films by Means of an Atmospheric Pressure Dielectric Barrier Discharge

Contact Info

Product

Resources

About