A large-scale cold plasma jet: generation mechanism and application effect DOI

Weisheng 伟胜 CUI 崔,

Ruobing 若兵 ZHANG 张

Plasma Science and Technology, Journal Year: 2023, Volume and Issue: 26(4), P. 042001 - 042001

Published: Dec. 21, 2023

Abstract Atmospheric pressure cold plasma jets (APCPJs) typically exhibit a slender, conical structure, which imposes limitations on their application for surface modification due to the restricted treatment area. In this paper, we introduce novel jet morphology known as large-scale (LSCPJ), characterized by presence of both central and peripheral trumpet-like diffuse jet. The experimental investigations have identified factors influencing jet, theoretical simulations shed light role flow field electric in shaping formation LSCPJ. It is proved that, under conditions elevated helium concentration, distributions impurity gas particles jointly determine jet’s morphology. High-speed ICCD camera images confirm dynamic behavior bullets LSCPJ, consistent with analysis. Finally, it demonstrated that when applied silicone rubber, LSCPJ can achieve area over 28 times larger than APCPJ equivalent conditions. This paper uncovers crucial gases fields opens up possibility efficiently diversifying generation effects through external electromagnetic fields. These insights hold promise reducing cost expanding applications across various industrial sectors.

Language: Английский

A large-scale filament-free planar plume generated by an argon plasma jet in a gas-confined barrier discharge geometry DOI Creative Commons
Mo Chen, Xiupin Dong, Kaiyue Wu

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 124(21)

Published: May 20, 2024

Large-scale plumes in a plasma jet are desirable for fast processing of materials with large surface, which normally composed discharge filaments. A filamentary plume may cause nonuniform treatment or even damage to vulnerable samples. In this Letter, an argon gas-confined barrier geometry is proposed generate large-scale filament-free plume. Results indicate that the can only be sustained relatively low voltage amplitude (Vp), transits increasing Vp. There one negative per cycle plume, while both positive and discharges Fast photography reveals diffuse, originating from propagation streamer. On contrary, filamentary. Optical emission spectroscopy indicates has lower electron density, excitation temperature, molecular vibrational temperature compared gas keeps at value varying

Language: Английский

Citations

4
Numerical investigation on the discharge formation in micrometer pores in structured catalyst irradiated by a helium atmospheric pressure plasma jet DOI
Wenjun Ning, Hao Shang,

Shen Xueming

et al.

Plasma Sources Science and Technology, Journal Year: 2024, Volume and Issue: 33(2), P. 025004 - 025004

Published: Jan. 19, 2024

Abstract Non-thermal plasma catalysis is a promising way to achieve high efficiency in applications such as energy conversion and chemical engineering. Although synergistic effects between plasmas catalysts have been preliminarily considered an underlying mechanism of this type catalysis, the formation discharges small-size catalyst pores, which possibly crucial factor plasma-activated still not well understood. In paper, investigations on interactions helium atmospheric pressure jet (APPJ) with micrometer-sized pores different shapes sizes are conducted 2D fluid model. Simulation results show that existence makes subtle difference APPJ by changing equivalent capacitance, indicating potential moderate stable APPJ-catalyst interactions. Traces air impurities can promote thus allow form smaller pores. case when channel too small for direct penetration, we propose method producing prior discharge relatively large cavity supply seed electrons ignite inside channel. The discussed from perspectives behavior plasma-surface This work will contribute preparation structured potentially higher efficient better understanding physical processes micrometer

Language: Английский

Citations

2
Distribution patterns of reactive species in the interaction between atmospheric pressure plasma jet and fiber membrane DOI
Xianghao Kong, Sisi Li, Haoyi Li

et al.

Plasma Sources Science and Technology, Journal Year: 2023, Volume and Issue: 32(10), P. 105004 - 105004

Published: Sept. 26, 2023

Abstract Surface modification of polymer fiber membranes using atmospheric pressure low-temperature plasma has gained significant attention in recent years. The effectiveness surface determined by the uniform distribution reactive species when touching fibers. In this study, we investigated patterns on fibers with different spacings both experiment and modeling. results revealed that reduced spacing produced an obstructive effect propagation species. This obstruction was primarily caused accumulation a charge windward side fiber. Consequently, there substantial difference fluxes between leeward sides membrane, resulting poor uniformity distribution. It worth noting exhibited double-peak circumferential filaments. phenomenon attributed to coupling filaments, wherein electric field strength higher within gap. High facilitated generation However, as decreased, high became limited until it merged into

Language: Английский

Citations

5
Visualization of electrical interaction among close-packed atmospheric pressure plasma jets DOI Creative Commons
Bo Zhang, Wang Guo, Yuhao Sun

et al.

Physics of Plasmas, Journal Year: 2024, Volume and Issue: 31(5)

Published: May 1, 2024

Plasma jet arrays can flexibly generate large-scale plasma in ambient air for surface treatment. Close arrangement of jets inevitably induces a complex electrical interaction, which reshapes plumes and destabilizes the treatment process. Understanding interaction is prerequisite optimizing parameters In this study, we employ linear electro-optic technique to visualize on cross section perpendicular plume trajectories. The strength featured by density deposited charge. Results show that simultaneously deposit like-charged groups onto substrate. However, proven behave with tendency toward convergence rather than repulsion caused electrostatic interaction. It inferred electrons at head ionization waves (IWs) shield repellence between positive charge groups. collision interval guides coalescence adjacent IWs. This study clarifies multiple jets, instructive stable control non-thermal plasmas

Language: Английский

Citations

1
A nature-based solution for regulating the inflammatory phase of diabetic wound healing using a cold atmospheric plasma DOI Creative Commons
Luxiang Zhao, Jing Li, Xiaoyu Xu

et al.

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(9), P. 102147 - 102147

Published: Aug. 9, 2024

Diabetes is an inflammatory disease that usually causes chronic wounds for which no satisfactory therapies currently exist. Here we report a physical approach using cold atmospheric plasma (CAP) to target diabetic locally regulating the phase of wounds. In this paper, comprehensive analysis factors combined with investigations helium jet characteristics conducted. The and biological safety clinical application prospects CAP human body are also analyzed. results demonstrate first time therapy can stimulate body's own regulation function achieve normal state, rather than excessively interfere in single target. This involves inhibition pro-inflammatory onset subphase promotion anti-inflammatory subsequent resolution subphase. research contributes development highly effective safe topical promote wound healing.

Language: Английский

Citations

1
Research progress of low-temperature plasma polishing technology in chip material processing DOI Creative Commons

Hui Yan,

Shuang Xue,

Peiwen Guo

et al.

Clean Energy Science and Technology, Journal Year: 2024, Volume and Issue: 2(4), P. 263 - 263

Published: Nov. 21, 2024

Low-temperature plasma polishing technology, by virtue of the plasma’s highly ionized characteristics, can accurately remove tiny defects and impurities on surface chip materials, improve flatness finish reduce mechanical damage subsurface damage, has a high material removal rate. This paper reviews application status, advantages limitations technologies in field processing. The principles applications plasma-assisted polishing, chemical vaporization machining, electrolytic processing-mechanical assisted selective etching are specifically discussed, their analyzed. Finally, development chip-polishing technology is prospected, aiming to provide useful reference for continuous improvement manufacturing processes future microelectronics industry.

Language: Английский

Citations

1
The Molecular Basis for Selectivity of the Cytotoxic Response of Lung Adenocarcinoma Cells to Cold Atmospheric Plasma DOI Creative Commons
Mikhail Biryukov,

Dmitriy Semenov,

Nadezhda Kryachkova

et al.

Biomolecules, Journal Year: 2023, Volume and Issue: 13(11), P. 1672 - 1672

Published: Nov. 20, 2023

The interaction of cold atmospheric plasma (CAP) with biotargets is accompanied by chemical reactions on their surfaces and insides, it has great potential as an anticancer approach. This study discovers the molecular mechanisms that may explain selective death tumor cells under CAP exposure. To reach this goal, transcriptional response to treatment was analyzed in A549 lung adenocarcinoma lung-fibroblast Wi-38 cells. We found induced common trend from cells—the p53 pathway, KRAS signaling, UV response, TNF-alpha apoptosis-related processes were up-regulated both cell lines. However, amplitude more variable CAP-dependent DNA damage, cell-cycle arrest G2/M, dysfunctional glutathione peroxidase 4 (GPx4). activation genes endoplasmic reticulum stress ER lumens detected only Transmission-electron microscopy confirmed alteration morphology after It can be concluded responses nuclear constitute main differences sensitivity healthy

Language: Английский

Citations

3
Manipulating the propagation of ionization wave by pulsed electrical potential in atmospheric plasma jet DOI
C.Y. Lu, Junlin Fang, Shaofeng Xu

et al.

Applied Physics Letters, Journal Year: 2023, Volume and Issue: 123(11)

Published: Sept. 11, 2023

A noninvasive method was developed to measure the electrical potential in an atmospheric pressure plasma jet. The spatiotemporal evolution of measured by a wire electrode experiment and simulated two-dimensional self-consistent numerical model, which demonstrates that along with traveling ionization wave outside discharge tube ambient air plays significant role on propagation wave. It furtherly shows enhancement restriction are dependent amplitude auxiliary electrode, proposes way manipulate pulsed

Language: Английский

Citations

2
Study on Precursor Distribution of a No-inner-wall Deposition Atmospheric Pressure Plasma Jet Used for Thin Film Deposition DOI
Tao He,

Zhixin Qian,

Wang Qin

et al.

Plasma Chemistry and Plasma Processing, Journal Year: 2024, Volume and Issue: 44(2), P. 807 - 819

Published: Feb. 11, 2024

Language: Английский

Citations

0
Study of the Propagation Mechanism of Plasma Impingement on Multilayer Fiber Membranes DOI
Xianghao Kong, Wenjun Ning, Ruixue Wang

et al.

Lecture notes in electrical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 714 - 721

Published: Jan. 1, 2024

Language: Английский

Citations

0