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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2021-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9617641/ |
| _version_ | 1818823992954322944 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-18T23:48:48Z |
| format | Article |
| id | doaj.art-1a721579b95746f59a49de6423eb8103 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-18T23:48:48Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-1a721579b95746f59a49de6423eb81032022-12-21T20:47:05ZengIEEEIEEE Access2169-35362021-01-01915431815432310.1109/ACCESS.2021.31286109617641Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric PressureChaoyang Zhang0https://orcid.org/0000-0003-2049-0054Wenjie Fu1https://orcid.org/0000-0003-4321-4757Shijie Hu2Tongxing Huang3Yang Yan4School of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu, ChinaSchool of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu, ChinaDepartment of Physics, College of Arts and Sciences, China University of Petroleum-Beijing at Karamay, Karamay, ChinaSchool of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu, ChinaSchool of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu, ChinaMicrowave 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.https://ieeexplore.ieee.org/document/9617641/Microwave devicesplasma sourcesatmospheric-pressure plasmasplasma stabilityplasma diagnosticsplasma jet |
| spellingShingle | Chaoyang Zhang Wenjie Fu Shijie Hu Tongxing Huang Yang Yan Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure IEEE Access Microwave devices plasma sources atmospheric-pressure plasmas plasma stability plasma diagnostics plasma jet |
| title | 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_short | Investigation on Continuous and Modulated Microwave Plasma Filaments at Atmospheric Pressure |
| title_sort | investigation on continuous and modulated microwave plasma filaments at atmospheric pressure |
| topic | Microwave devices plasma sources atmospheric-pressure plasmas plasma stability plasma diagnostics plasma jet |
| url | https://ieeexplore.ieee.org/document/9617641/ |
| work_keys_str_mv | AT chaoyangzhang investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT wenjiefu investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT shijiehu investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT tongxinghuang investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure AT yangyan investigationoncontinuousandmodulatedmicrowaveplasmafilamentsatatmosphericpressure |