J 2025

Sample Thickness and Edge Proximity Influence Spatial Behavior of Filaments and Treatment Uniformity of RF Cold Atmospheric Pressure Plasma Jet

POLÁŠKOVÁ, Kateřina; David NEČAS; Lukáš DOSTÁL; Miloš KLÍMA; Lenka ZAJÍČKOVÁ et al.

Základní údaje

Originální název

Sample Thickness and Edge Proximity Influence Spatial Behavior of Filaments and Treatment Uniformity of RF Cold Atmospheric Pressure Plasma Jet

Autoři

POLÁŠKOVÁ, Kateřina; David NEČAS; Lukáš DOSTÁL; Miloš KLÍMA a Lenka ZAJÍČKOVÁ

Vydání

Plasma Chemistry and Plasma Processing, Springer, 2025, 0272-4324

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10305 Fluids and plasma physics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.500 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001329817100001

EID Scopus

2-s2.0-85206369174

Klíčová slova anglicky

Radio frequency atmospheric pressure plasma jet; Plasma filaments; Plasma treatment; Complex surfaces; Fast camera imaging

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 5. 2. 2025 16:47, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The ability of atmospheric pressure plasma jets to treat complex non-planar surfaces is often cited as their advantage over other atmospheric plasmas. However, the effect of complex surfaces on plasma parameters and treatment efficiency has seldom been studied. Herein, we investigate the interaction of the atmospheric pressure plasma slit jet (PSJ) with block polypropylene samples of different thicknesses (5 and 30 mm) moving at two different speeds. Even though the distance between the slit outlet and the sample surface was kept constant, the treatment efficiency of PSJ ignited in the Ar and \hbox {Ar/O}_2 gas feeds varied with the sample thickness due to the plasma parameters such as filament count and speed being affected by the different distances of the ground (the closer the ground is, the higher the discharge electric field). On the other hand, the \hbox {Ar/N}_2 PSJ diffuse plasma plumes were less affected by the changes in the electric field, and the treatment efficiency was the same for both sample thicknesses. Additionally, we observed a difference in the efficiency and uniformity of the PSJ treatment of the edges and the central areas in some working conditions. The treatment efficiency near the edges depended on the duration of the filament contact, i. e., how long the local electric field trapped the filaments. Conversely, the treatment uniformity near the edges and in the central areas was different if the number of filaments changed rapidly as the discharge moved on and off the sample (the 5 mm samples treated by easily sustained Ar PSJ).

Návaznosti

90251, velká výzkumná infrastruktura
Název: CzechNanoLab II