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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8622773 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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