An experimental investigation concerning the effects of a duty-cycle in the supply of a dielectric barrier discharge in atmospheric pressure air has been performed. Electrical characteristics of the discharge have been measured, focusing mainly on the statistical properties of the current filaments and on dielectric surface charging, both affected by the frequent repetition of breakdown imposed by the duty-cycle. Information on the gas-phase composition was gathered too. In particular, a strong enhancement in the ozone formation rate is observed when suitable long pauses separate the active discharge phases. A simulation of the chemical kinetics in the gas-phase, based on a simplified discharge modeling, is briefly described in order to shed light on the observed increase in ozone production. The effect of a duty-cycle on surface modification of polymeric films in order to increase their wettability has been investigated too.

BARNI, R., BIGANZOLI, I., DELL'ORTO, E., & RICCARDI, C. (2015). Effect of duty-cycles on the air plasma gas-phase of dielectric barrier discharges. JOURNAL OF APPLIED PHYSICS, 118(14) [10.1063/1.4933047].

Effect of duty-cycles on the air plasma gas-phase of dielectric barrier discharges

BARNI, RUGGERO
Primo
;
BIGANZOLI, ILARIA
Secondo
;
DELL'ORTO, ELISA CAMILLA
Penultimo
;
RICCARDI, CLAUDIA
Ultimo
2015

Abstract

An experimental investigation concerning the effects of a duty-cycle in the supply of a dielectric barrier discharge in atmospheric pressure air has been performed. Electrical characteristics of the discharge have been measured, focusing mainly on the statistical properties of the current filaments and on dielectric surface charging, both affected by the frequent repetition of breakdown imposed by the duty-cycle. Information on the gas-phase composition was gathered too. In particular, a strong enhancement in the ozone formation rate is observed when suitable long pauses separate the active discharge phases. A simulation of the chemical kinetics in the gas-phase, based on a simplified discharge modeling, is briefly described in order to shed light on the observed increase in ozone production. The effect of a duty-cycle on surface modification of polymeric films in order to increase their wettability has been investigated too.
Articolo in rivista - Articolo scientifico
dielectric barrier discharge, duty-cycle, ozone
English
BARNI, R., BIGANZOLI, I., DELL'ORTO, E., & RICCARDI, C. (2015). Effect of duty-cycles on the air plasma gas-phase of dielectric barrier discharges. JOURNAL OF APPLIED PHYSICS, 118(14) [10.1063/1.4933047].
Barni, R; Biganzoli, I; Dell'Orto, E; Riccardi, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/91430
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