Effect of gas flow on the nanoparticles transport in dusty acetylene plasmas

Xiangmei LIU; Wenjing LIU; Xi ZHANG; Xiaotian DONG; Shuxia ZHAO

doi:10.1088/2058-6272/acd361

Plasma Science and Technology > 2023 > 25(10): 105401. > DOI: 10.1088/2058-6272/acd361

Xiangmei LIU, Wenjing LIU, Xi ZHANG, Xiaotian DONG, Shuxia ZHAO. Effect of gas flow on the nanoparticles transport in dusty acetylene plasmas[J]. Plasma Science and Technology, 2023, 25(10): 105401. DOI: 10.1088/2058-6272/acd361

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Effect of gas flow on the nanoparticles transport in dusty acetylene plasmas

1.
School of Science, Qiqihar University, Qiqihar 161006, People's Republic of China
2.
School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China

More Information

Corresponding author:
Xiangmei LIU, E-mail: lxmjsc98@163.com

Shuxia ZHAO, E-mail: zhaonie@dlut.edu.cn
Received Date: March 14, 2023
Revised Date: May 07, 2023
Accepted Date: May 07, 2023
Available Online: December 05, 2023
Published Date: June 08, 2023

Graphical Abstract

Abstract

Abstract

This article presents simulation results on the effects of neutral gas flow for nanoparticle transport in atmospheric-pressure, radio-frequency, capacitively-coupled, and acetylene discharge. The acetylene gas is set to flow into the chamber from the upper showerhead electrode. The internal energy of the gas medium therein is transferred into kinetic energy so the gas advection can be triggered. This is represented by the pressure volume work term of the gas energy converse equation. The gas advection leads to the gas temperature sink at the gas inlet, hence a large gas temperature gradient is formed. The thermophoresis relies on the gas temperature gradient, and causes the profile of nanoparticle density to vary from a double-peak structure to a single-peak one. The gas advection influences the properties of electron density and temperature as well and causes the drift-ambipolar mode profile of electron density asymmetric. In the bulk region, i.e. away from the inlet, the gas advection is more like one isovolumetric compression, which slightly increases the temperature of the gas medium at consuming its kinetic energy.
- gas flow,
- dusty acetylene plasmas,
- nanoparticles transport

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Acknowledgments

This work is supported by National Natural Science Foundation of China (Nos. 11805107 and 12275039), the Fundamental Research Funds in Heilongjiang Provincial Universities of China (No. 135509124), and the Graduate Innovation Foundation of Qiqihar University (No. YJSCX2022014).

References (33)

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