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The generation and transport of reactive nitrogen species from a low temperature atmospheric pressure air plasma source

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Abstract

The reactive chemical species generated by non-equilibrium plasma under atmospheric pressure conditions are key enablers for many emerging applications spanning the fields of biomedicine, manufacturing and agriculture. Despite showing great application potential, insight in to the underpinning reactive species generation and transport mechanisms remains scarce. This contribution focuses on the spatiotemporal behaviour of reactive nitrogen species (RNS) created and transported by an atmospheric pressure air surface barrier discharge (SBD) using both laser induced fluorescence and particle imaging velocimetry measurements combined with experimentally validated numerical modelling. It was observed that highly reactive species such as N are confined to the discharge region while less reactive species such as NO, NO2 and N2O closely followed the induced flow. The concentration of key RNS was found to be in the 10–100 ppm range at a position of 25 mm downstream of the discharge region. A close agreement between the experimental and computational results was achieved and the findings provide a valuable insight in to the role of electrohydrodynamic forces in dictating the spatiotemporal distribution of reactive chemical species beyond the plasma generation region, which is ultimately a key contributor towards downstream treatment uniformity and application efficacy.

Graphical abstract: The generation and transport of reactive nitrogen species from a low temperature atmospheric pressure air plasma source

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Publication details

The article was received on 12 Sep 2018, accepted on 23 Oct 2018 and first published on 31 Oct 2018


Article type: Paper
DOI: 10.1039/C8CP05762A
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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    The generation and transport of reactive nitrogen species from a low temperature atmospheric pressure air plasma source

    A. Dickenson, N. Britun, A. Nikiforov, C. Leys, M. I. Hasan and J. L. Walsh, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C8CP05762A

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