Bactericidal Effect of a Dielectric Barrier Discharge Plasma Jet Generated in Laminar and Preturbulent Helium Flows

Stepanova, Olga; Рыбальченко, Оксана Владимировна; Pinchuk, M. É.; Astafiev, A. M.; Орлова, Ольга Геннадьевна; Spodobin, V A; Kudryavtsev, A. A.

doi:10.1615/plasmamed.2017019064

Cited by 14 publications

(8 citation statements)

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“…The plasma composition and the concentration of reactive species are essential for the treatment. Although the plasma composition is expected to have a lethal effect on pathogenic agents [13], healthy tissues near the infected wound should not be severely affected [14,15].…”

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confidence: 99%

Experimental Study of a Nonthermal DBD-Driven Plasma Jet System Using Different Supply Methods

Ivankov

Capela

Rueda

et al. 2022

Plasma

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This article presents an experimental study of a DBD-driven plasma jet system. The aim of the study is to design a whole system (the jet reactor, its electrical power supply, and a gas-feeding apparatus) suitable for biomedical applications. The article describes the test bench developed for this purpose and discusses the parameters it controls. The measurements show that the studied solutions can be used to control critical parameters such as the jet temperature and dimensions. The best results were obtained for a bipolar short-pulse voltage power supply in the 10–20 kHz frequency range and for a series resonant inverter current power supply operated in “burst mode”, allowing low-frequency modulation.

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confidence: 99%

Experimental Study of a Nonthermal DBD-Driven Plasma Jet System Using Different Supply Methods

Ivankov

Capela

Rueda

et al. 2022

Plasma

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“…The helium flow rate through the discharge tube was fixed at 6 l/min, at which the APPJ length has a maximum value with a laminar gas flow 35 , 36 . A more detailed description of the experimental setup can be found in the Methods section and in 37 .…”

Section: Resultsmentioning

confidence: 99%

“…The quartz tube had an internal diameter of 4.6 mm and a wall thickness of 1 mm. Additional details of the experimental system can be found in the paper 37 .…”

Section: Methodsmentioning

confidence: 99%

Role of charge accumulation in guided streamer evolution in helium DBD plasma jets

Pinchuk

Nikiforov

Снетов

et al. 2021

Sci Rep

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Experimental data are presented on the evolution of a helium atmospheric pressure plasma jet driven by a tailored voltage waveform generated as bunches of voltage pulses consisting of a superposition of $$\approx 43$$ ≈ 43 kHz bipolar square pulses and $$\approx 300$$ ≈ 300 kHz oscillations. The characteristics of directed ionization waves (guided streamers) are compared for bunches with different first pulse polarities and different bunch duty cycles. The longest and brightest streamers are achieved at the voltage bunch with the first negative pulse and a minimum duty cycle. The dynamics of streamers at the voltage bunch with the first positive pulse are characterized by the shortest length and a lower brightness. The plasma jet length can be smoothly changed by varying the number of pulses in the bunch and the polarity of the first pulse. It is thus possible to precisely localize the region of a strong field in space by combining the parameters of the applied voltage (the duty cycle and polarity of the first pulse of a bunch) with a stepwise propagation mode of a guided streamer.

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“…This mixing property of the ambient air is linked, in a complex manner, to the plume regime and pattern, [ 9 ] thereby affecting the jet characteristics and the treatment efficiency of the targeted materials. [ 10,11 ] The plume regime and pattern are, in turn, influenced by many factors, particularly the device configuration and the operating conditions. Hence, the plasma jets exhibited different patterns, primarily a conical shape and occasionally taper, [ 12 ] brush, [ 13 ] sword, [ 14 ] swelling, [ 15 ] helical, [ 16 ] or feather [ 17 ] ‐like shapes.…”

Section: Introductionmentioning

confidence: 99%

Distinctive patterns and characteristics of neon jet launched from plasma candle device

Abdelaziz

Kim

2020

Plasma Processes & Polymers

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This study reported the characterization of neon plasma jets emerging from a novel plasma device known as a plasma candle. The device launches stable, wide, and long cold plasmas in a shape resembling a flickering candle flame. The neon plasma candle (Ne‐PC) exhibited several interesting phenomena in terms of the discharge propagation and plume pattern, which are not common in other jet devices. A particular attention was paid to the dynamics of the gas flow, which was found to have significant effects on the discharge characteristics and jet shape. It is found that a porous disc in the Ne‐PC device distributed the gas flow uniformly, and subsequently enhanced the discharge initiation and formed a uniform conical jet. Moreover, the effect of the applied voltage on the flow dynamics led to a transformation in the conical shape of the jet to a fork‐like shape. This phenomenon did not appear in the helium plasma candle, and it is observed that the induced electrohydrodynamic (EHD) as well as the low velocity, diffusion coefficient, and momentum of the gas play a crucial role in this phenomenon. Optical emission spectroscopy measurements provided insights into the mechanism of the plume pattern and described its effect on the generated species. At higher applied voltages, a significant reduction in neon emissions was observed, but higher RONS were generated, due to the entrainment of the surrounding air. Furthermore, it is found that the Ne‐PC has a higher ability to generate RONS than the helium candle and neon in the conventional plasma jet devices (Ne‐CPJ), thereby suggesting its feasibility for material processing and biomedical applications.

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Bactericidal Effect of a Dielectric Barrier Discharge Plasma Jet Generated in Laminar and Preturbulent Helium Flows

Cited by 14 publications

References 0 publications

Experimental Study of a Nonthermal DBD-Driven Plasma Jet System Using Different Supply Methods

Experimental Study of a Nonthermal DBD-Driven Plasma Jet System Using Different Supply Methods

Role of charge accumulation in guided streamer evolution in helium DBD plasma jets

Distinctive patterns and characteristics of neon jet launched from plasma candle device

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