Direct current plasma jet at atmospheric pressure operating in nitrogen and air

Deng, Xiaolong; Nikiforov, Anton; Vanraes, Patrick; Leys, Ch.

doi:10.1063/1.4774328

Cited by 143 publications

(100 citation statements)

References 26 publications

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“…The nanocomposite films are deposited using an atmospheric pressure plasma deposition system with a nitrogen direct current (DC) plasma jet as shown in Figure a. The plasma is generated between a pin and a mesh electrode placed in a quartz tube . Investigation based on optical emission spectroscopy revealed that plasma contains abundant excited states of nitrogen molecules (N 2 (A 3 Σ, B 3 Π, C 3 Π)) and ionized species (

{normalN}_{2}^{+}

(B 2 Σ u , X 2 Σ g )).…”

Section: Methodsmentioning

confidence: 99%

Engineering of Composite Organosilicon Thin Films with Embedded Silver Nanoparticles via Atmospheric Pressure Plasma Process for Antibacterial Activity

Deng

Leys

Vujošević

et al. 2014

Plasma Process. Polym.

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An innovative antibacterial thin film with imbedded silver nanoparticles (AgNPs) is investigated through atmospheric pressure plasma deposition. The process is based on a single‐step fabrication of nanocomposite films where AgNPs are fed directly into the discharge zone. The morphology and stoichiometry of the thin films, characterized with SEM/EDX, GD‐OES, and XPS, can be tailored by the plasma parameters and the quantity of introduced AgNPs. An exceptional 32 at% of AgNPs is reached in the work. The antibacterial assays using Escherichia coli and Staphylococcus aureus strains show effective antibacterial activity of the films and indicate that the fabrication of nanocomposite films using atmospheric pressure plasma represents a feasible way to overcome the issue of device related infection.

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{normalN}_{2}^{+}

(B 2 Σ u , X 2 Σ g )).…”

Section: Methodsmentioning

confidence: 99%

Engineering of Composite Organosilicon Thin Films with Embedded Silver Nanoparticles via Atmospheric Pressure Plasma Process for Antibacterial Activity

Deng

Leys

Vujošević

et al. 2014

Plasma Process. Polym.

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“…Room temperature atmospheric pressure plasma jets (RT‐APPJs) have attracted widespread attentions in the last decade due to their applications such as biomedicine and material processing . Researchers found out that the plasma plumes looks like continuously by naked eyes are actually bullets like volumes of plasmas traveling at a speed of 10 4 –10 5 m s −1 .…”

Section: Introductionmentioning

confidence: 99%

On the Mechanism of Ring‐Shape Structure of Plasma Bullet

Xian

Yue

Liu

et al. 2014

Plasma Processes & Polymers

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Ring-shape is one of the feature characteristics of plasma bullet. However, regarding the mechanism of the ring-shape structure of the plasma bullet, it is still not clear. In this paper, a series of special designed experiments are carried out to investigate the mechanism of the ring-shape structure of the plasma bullet. In these experiments, the effects of the surface discharge and the effect of the surrounding gas diffusion, thus the effect of Penning ionization can be separated. It is found that both the diffusion of the surrounding air and the surface discharge play important role in the forming of the ringshape structure.

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“…; Deng et al . ):

{normalO}_{2} + {normale}^{*} \to O + O + e

O + {normalO}_{2} + M \to {normalO}_{3} + M

{normalN}_{2}^{*} + {normalO}_{2} \to {normalN}_{2} + 2 O

{normalN}_{2}^{*} + {normalO}_{2} \to {normalN}_{2} O + O

O + {normalN}_{2} \to NO + O

O + NO + M \to {NO}_{2} + M

where M=O, O 2 or O 3 , a third collision partner. Based on the experimental results, elemental oxygen played an essential role in inducing the reactive species to influence an interaction with the micro‐organism (Guo et al .…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, the high sterilization efficiency was mainly attributed to oxygen radicals, ozone and nitrogen oxide. The formation of oxygen radicals and nitrogen oxide can be described by the following reactions (Eliasson et al 1987;Hill and Smoot 2000;Ahn et al 2003;Deng et al 2013):…”

Section: Assessment Of the Effects Of Various Inactivation Agents On mentioning

confidence: 99%