6 papers
Proof of operation of a micro-hollow cathode discharge driven by a true ns-pulsed high voltage: emission properties and atomic nitrogen production
Nikolaos Chazapis, Dimitrios Stefas, Alexandra Brisset +5
The implementation of Micro-Hollow Cathode Discharges (MHCDs) for the efficient and controlled dissociation of molecular nitrogen into reactive N-atoms remains a central challenge…
Quantitative schlieren imaging coupled with inverse Abel transformation for flow field studies in a cylindrical surface DBD
K Giotis, A G Makrypodi, P Svarnas +2
The present work is devoted to the proper application of the schlieren imaging technique, combined with inverse Abel transformation, to record the flow field induced by atmospheric…
Electrohydrodynamic coupling and stochastic branching in a miniaturized ns-pulsed He plasma jet
Y Agha, K Giotis, D Stefas +7
This study focuses on the complex coupling between discharge and flow properties in a ns-pulsed He micrometer scale atmospheric pressure plasma jet (APPJ). This is investigated…
A Comprehensive multi-species comparison of rotational temperature probes in a DC Ar/N micro-hollow cathode discharge
Dimitrios Stefas, Belkacem Menacer, Alice Remigy +4
Accurate gas temperature () determination in microplasmas is critical for optimizing their applications, yet isolated diagnostic approaches may yield misleading result…
Ultrafast ps--TALIF and streak camera diagnostics of atomic hydrogen in a helium microplasma jet
Dimitrios Stefas, Yanis Agha, Laurent Invernizzi +6
Picosecond two-photon absorption laser induced fluorescence (ps--TALIF) is combined with a streak camera (1 ps highest temporal resolution) to probe the effective lifetime ($…
Discharge dynamics in a cylindrical SDBD prototype reactor under ns-pulsed and sinusoidal AC operation
Konstantinos Giotis, Dimitrios Stefas, Yanis Agha +5
We developed a prototype reactor generating surface dielectric barrier discharges (SDBDs) in ambient air, designed for consistent operation while preventing constructive material d…