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Particle Surface Modification in the Near-Electrode Region of an RF Discharge

The results of a study on particles’ surfaces after being exposed to the near-electrode region of a radio frequency (RF) discharge are presented. It was experimentally displayed that metal starts being deposited on the surface of particles levitating above the lower electrode of the discharge chambe...

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Autores principales: Kononov, Evgenii Aleksandrovich, Vasiliev, Mikhail Mikhailovich, Vasilieva, Elena Valeryevna, Petrov, Oleg Fedorovich
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622773/
https://www.ncbi.nlm.nih.gov/pubmed/34835695
http://dx.doi.org/10.3390/nano11112931
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author Kononov, Evgenii Aleksandrovich
Vasiliev, Mikhail Mikhailovich
Vasilieva, Elena Valeryevna
Petrov, Oleg Fedorovich
author_facet Kononov, Evgenii Aleksandrovich
Vasiliev, Mikhail Mikhailovich
Vasilieva, Elena Valeryevna
Petrov, Oleg Fedorovich
author_sort Kononov, Evgenii Aleksandrovich
collection PubMed
description The results of a study on particles’ surfaces after being exposed to the near-electrode region of a radio frequency (RF) discharge are presented. It was experimentally displayed that metal starts being deposited on the surface of particles levitating above the lower electrode of the discharge chamber after switching the RF discharge on. For melamine-formaldehyde (MF) particles, the appearance of an island metal coating is observed after 30 min of plasma exposure. Eroded electrodes and elements of the gas discharge chamber may serve as a source of deposited material. In addition, an analysis of the surface and composition of particles placed on the upper electrode after 6 h of plasma exposure is presented. We reveal that the composition and structure of the particle coating changes during the experiment. The MF particles under exposure become eroded, and needle-like structures containing metals are formed on their surface. We also observe the formation of columnar structures from the products of erosion of electrodes on particles with a metal coating.
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spelling pubmed-86227732021-11-27 Particle Surface Modification in the Near-Electrode Region of an RF Discharge Kononov, Evgenii Aleksandrovich Vasiliev, Mikhail Mikhailovich Vasilieva, Elena Valeryevna Petrov, Oleg Fedorovich Nanomaterials (Basel) Article The results of a study on particles’ surfaces after being exposed to the near-electrode region of a radio frequency (RF) discharge are presented. It was experimentally displayed that metal starts being deposited on the surface of particles levitating above the lower electrode of the discharge chamber after switching the RF discharge on. For melamine-formaldehyde (MF) particles, the appearance of an island metal coating is observed after 30 min of plasma exposure. Eroded electrodes and elements of the gas discharge chamber may serve as a source of deposited material. In addition, an analysis of the surface and composition of particles placed on the upper electrode after 6 h of plasma exposure is presented. We reveal that the composition and structure of the particle coating changes during the experiment. The MF particles under exposure become eroded, and needle-like structures containing metals are formed on their surface. We also observe the formation of columnar structures from the products of erosion of electrodes on particles with a metal coating. MDPI 2021-11-02 /pmc/articles/PMC8622773/ /pubmed/34835695 http://dx.doi.org/10.3390/nano11112931 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kononov, Evgenii Aleksandrovich
Vasiliev, Mikhail Mikhailovich
Vasilieva, Elena Valeryevna
Petrov, Oleg Fedorovich
Particle Surface Modification in the Near-Electrode Region of an RF Discharge
title Particle Surface Modification in the Near-Electrode Region of an RF Discharge
title_full Particle Surface Modification in the Near-Electrode Region of an RF Discharge
title_fullStr Particle Surface Modification in the Near-Electrode Region of an RF Discharge
title_full_unstemmed Particle Surface Modification in the Near-Electrode Region of an RF Discharge
title_short Particle Surface Modification in the Near-Electrode Region of an RF Discharge
title_sort particle surface modification in the near-electrode region of an rf discharge
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8622773/
https://www.ncbi.nlm.nih.gov/pubmed/34835695
http://dx.doi.org/10.3390/nano11112931
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