Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure

Microwave atmospheric pressure plasma jets continue to evolve with the growth of atmospheric plasma’s applications in sterilization, material modification, and cancer treatment. In this article, continuous and modulated microwave plasma filaments were produced by a hand-held microwave pla...

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Autores principales:	Chaoyang Zhang, Wenjie Fu, Shijie Hu, Tongxing Huang, Yang Yan
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Microwave devices plasma sources atmospheric-pressure plasmas plasma stability plasma diagnostics plasma jet Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/1a721579b95746f59a49de6423eb8103
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spelling	oai:doaj.org-article:1a721579b95746f59a49de6423eb81032021-11-24T00:01:42ZInvestigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure2169-353610.1109/ACCESS.2021.3128610https://doaj.org/article/1a721579b95746f59a49de6423eb81032021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9617641/https://doaj.org/toc/2169-3536Microwave atmospheric pressure plasma jets continue to evolve with the growth of atmospheric plasma’s applications in sterilization, material modification, and cancer treatment. In this article, continuous and modulated microwave plasma filaments were produced by a hand-held microwave plasma jet, and then they were compared in plasma length, electron excitation temperature, and emission spectrum. The electron excitation temperature was measured by the emission spectroscopy diagnostic method, and the regularities of the compared parameters’ change were studied by varying duty cycles and periods of the modulating signal. The results prove that the modulated microwave can generate stable plasma filaments directly in the air without protective tubes, and it is different from the continuous microwave plasma in all compared parameters. Besides, stable dendritic tearing of plasma filaments was observed. These results imply that modulated microwave and continuous microwave plasma filaments cannot be regarded as the same, the changing manner and the reaction on the surface of the medium may be completely different even if they are the same in the ambient air in most cases. These results are helpful for the controlling and understanding of microwave plasma, and the stable tearing could be used to expand the treated area of a single plasma jet.Chaoyang ZhangWenjie FuShijie HuTongxing HuangYang YanIEEEarticleMicrowave devicesplasma sourcesatmospheric-pressure plasmasplasma stabilityplasma diagnosticsplasma jetElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 154318-154323 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Microwave devices plasma sources atmospheric-pressure plasmas plasma stability plasma diagnostics plasma jet Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Microwave devices plasma sources atmospheric-pressure plasmas plasma stability plasma diagnostics plasma jet Electrical engineering. Electronics. Nuclear engineering TK1-9971 Chaoyang Zhang Wenjie Fu Shijie Hu Tongxing Huang Yang Yan Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure
description	Microwave atmospheric pressure plasma jets continue to evolve with the growth of atmospheric plasma’s applications in sterilization, material modification, and cancer treatment. In this article, continuous and modulated microwave plasma filaments were produced by a hand-held microwave plasma jet, and then they were compared in plasma length, electron excitation temperature, and emission spectrum. The electron excitation temperature was measured by the emission spectroscopy diagnostic method, and the regularities of the compared parameters’ change were studied by varying duty cycles and periods of the modulating signal. The results prove that the modulated microwave can generate stable plasma filaments directly in the air without protective tubes, and it is different from the continuous microwave plasma in all compared parameters. Besides, stable dendritic tearing of plasma filaments was observed. These results imply that modulated microwave and continuous microwave plasma filaments cannot be regarded as the same, the changing manner and the reaction on the surface of the medium may be completely different even if they are the same in the ambient air in most cases. These results are helpful for the controlling and understanding of microwave plasma, and the stable tearing could be used to expand the treated area of a single plasma jet.
format	article
author	Chaoyang Zhang Wenjie Fu Shijie Hu Tongxing Huang Yang Yan
author_facet	Chaoyang Zhang Wenjie Fu Shijie Hu Tongxing Huang Yang Yan
author_sort	Chaoyang Zhang
title	Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure
title_short	Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure
title_full	Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure
title_fullStr	Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure
title_full_unstemmed	Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure
title_sort	investigation on continuous and modulated microwave plasma filaments at atmospheric pressure
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/1a721579b95746f59a49de6423eb8103
work_keys_str_mv	AT chaoyangzhang investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT wenjiefu investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT shijiehu investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT tongxinghuang investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT yangyan investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure
_version_	1718416080208134144

Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure

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