Investigation of the Interaction between a Helium Plasma Jet and Conductive (Metal)/ Non-Conductive (Dielectric) Targets

Abstract

Recent research in plasma biology proved that atmospheric pressure plasma jets (APPJs) have a biocidal effect, making them a promising alternative to traditional antimicapability of the APPJs, the streamer propagation, and the chemistry involved. The aim of this study is to investigate experimentally the effect of the target conductivity on the plasma characteristics: plasma jet propagation and reactive species production. The results show that the tions depend on the conductivity of the target. The results also demonstrate that the generation This study shows that the assessment of RONS generated by APPJs should be performed as close as possible to the real applications conditions.

Investigation of Power Transmission of a Helium Plasma Jet to Different Dielectric Targets Considering Operating Modes

“…For plasma setups, the characteristics like emission, species generation, electrical field strength amplitude and even stability are impacted when a surface is put in close vicinity [9][10][11][12][13][14]. Thus, an increased interest has arisen in recent years in the investigation of interaction with a target made of liquid, dielectric or metal resembling specific application conditions [15][16][17][18][19].…”

Determination of electron properties of a helium atmospheric pressure plasma jet with a grounded metallic target

“…When a target was grounded, the electric field significantly increased compared to when using a floating target. Yamada et al [36] and Kone et al [37] measured the spatial distributions of OH, N 2 + , O, and He by optical emission spectroscopy. [36,37] Darny et al [38] and Hofmans et al [39] reported experimental data for the electric field in an APPJ with and without a target.…”

Low-Voltage Plasma Jet With Piezoelectric Generator: Preliminary Evaluation of Decontamination Capabilities

“…Fig. 5(b) highlights the main emission lines of the plasma jet flowing in air, commonly observed by many authors [38][39][40][41][42] on a reduced wavelength range (300-800nm). Two spectra were recorded in this work.…”

“…The characterization of piezo-plasma jet was made by optical emission spectroscopy and by bidimensional emission imaging. An optical spectrometer (HR2000+, Ocean Optics, Grating 1800mm-1, slit 10μm, 200 to 1100nm, maximal optical resolution 0.5nm) coupled to an optical fiber (core diameter 600μm) was used to identify the plasma emission lines [40]. The measurement was realized in order to identify the typical optical emissions of the carrier gas and the reactive species due to the ambient air.…”

“…The jet length was determined from the ICCD camera data. The experimental setup has been described previously in [40][41].…”