A Method of Using a Carbon Fiber Spiral-Contact Electrode to Achieve Atmospheric Pressure Glow Discharge in Air

Liu, Wenzheng; Zhao, Shengzhi; Chai, Maosheng; Niu, Jiangqi

doi:10.1088/0256-307x/34/8/085203

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…In order to improve the performance of the EHD propulsion system for space missions, Granados et al designed a single-stage EHD thruster at 1.3 kPa sub-atmospheric pressure [19]. In previous lab research, W Z Liu et al used the micro-discharge characteristics of carbon fiber to effectively suppress the filamentous discharge, and realized a disperse glow discharge in atmospheric pressure air [20][21][22]. On the basis of these results, this study will make use of the discharge characteristics of a carbon fiber spiral electrode and the AC-DC coupled electric field superposition mode to accelerate the velocity of ionic wind.…”

Section: Introductionmentioning

confidence: 99%

Study of ionic wind based on dielectric barrier discharge of carbon fiber spiral electrode

Liu

Zhai

et al. 2019

Plasma Sci. Technol.

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Based on the idea that a large number of charged particles can be generated by a high-frequency alternating current (AC) dielectric barrier discharge (DBD), and charged particles can be accelerated directionally by a direct current (DC) electric field, a new type of ionic wind formation method is proposed in this paper. To this end, a carbon fiber spiral electrode serves as the generation electrode and a metal rod electrode as the collection electrode, with AC and DC potentials applied respectively to the generation electrode and the collection electrode to form an AC-DC coupled electric field. Under the action of the coupled electric field, a dielectric barrier discharge is formed on the carbon fiber spiral electrode, and the electrons generated by the discharge move from the generation electrode to the collection electrode in the opposite direction of the electric field vectors. During the movement, energy is transferred to the gas molecules by their colliding with neutral gas molecules, thereby forming a directional gas stream movement, i.e. ionic wind. In the research process, it is verified through electric field simulation analysis and discharge experiment that this method can effectively increase the number of charged particles in the discharge process, and the velocity of the ionic wind is nearly doubled. On this basis, the addition of a third electrode forms a distinct discharge region and an electron acceleration region, which further increases its velocity. The experimental result shows that the ionic wind speed reaches up to 2.98 m s −1 . Thanks to the ability of the electrode structure to generate an atmospheric pressure DBD plasma and form an ionic wind, we can create a noise-free air purification device without resorting to a fan, with this device having good application prospects in the field of air purification.

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Section: Introductionmentioning

confidence: 99%

Study of ionic wind based on dielectric barrier discharge of carbon fiber spiral electrode

Liu

Zhai

et al. 2019

Plasma Sci. Technol.

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“…It can be seen from the above sections and relevant references [20][21][22][23] that, due to the very small discharge gap, with the help of microdischarge and field emission, it is easy for the carbon fibre helical-contact electrode structure to preferentially form the discharge process under a certain electric field strength. The predischarge effect is optimized because of its low initial discharge voltage and good diffusion.…”

Section: Results and Discussion -mentioning

confidence: 99%

Study on the atmospheric pressure homogeneous discharge in air assisted with a floating carbon fibre microelectrode

Zhao¹,

Hao²,

Qiao³

et al. 2020

EPL

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Based on the consideration of increasing the number of initial electrons and providing an appropriate distribution of electric field strength for discharge space, a method of adopting the wire-cylindrical type electrode structure with a floating carbon fibre electrode to achieve atmospheric pressure homogeneous discharge (APHD) in air is proposed in this paper. Studies of the electrode characteristics show that this structure can make full use of the microdischarge process of the carbon fibre microelectrode and the good discharge effect of the helical electrode to provide plenty of initial electrons for the discharge space. Besides, the non-uniform electric field distribution with gradual change leads to the slow growth of electron avalanches in this structure. Thus, the initial discharge voltage can be reduced and the formation of filamentary discharge channels can be inhibited, which provides theoretical possibilities for the homogeneous discharge in atmospheric air. Experiments show that a three-dimensional uniform discharge phenomenon can be realized under a 6.0 kV applied voltage in a PFA tube of 6 mm inner diameter, displaying good uniformity and large scale.

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“…In addition, the modification effect is closely related to plasma parameters (such as plasma density, active particle energy, etc). Here, the surface modification of polymers such as aramid fiber (AF) and polyester are studied [31,32].…”

Section: Application Of Apgd Plasma In Surface Modification Of Materialsmentioning

confidence: 99%

“…However, nanosecond pulse power supply has the disadvantages of high cost and large loss, and APGD is not capable of being achieved in air between a large-distance gap and an open space. In the present paper, based on our previous research results and published papers [30][31][32][33][34][35], the methods of achieving APGD in air without using the nanosecond pulse power are analyzed systematically. The aim is to provide references for the researchers of industrial applications of plasma.…”

Section: Introductionmentioning

confidence: 99%

Exploration to generate atmospheric pressure glow discharge plasma in air

Liu

Zhao

2018

Plasma Sci. Technol.

Self Cite

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Atmospheric pressure glow discharge (APGD) plasma in air has high application value. In this paper, the methods of generating APGD plasma in air are discussed, and the characteristics of dielectric barrier discharge (DBD) in non-uniform electric field are studied. It makes sure that APGD in air is formed by DBD in alternating current electric field with using the absorbing electron capacity of electret materials to provide initial electrons and to end the discharge progress. Through designing electric field to form two-dimensional space varying electric field and three-dimensional space varying electric field, the development of electron avalanches in airgap is suppressed effectively and a large space of APGD plasma in air is generated. Further, through combining electrode structures, a large area of APGD plasma in air is generated. On the other hand, by using the method of increasing the density of initial electrons, millimeter-gap glow discharge in atmospheric pressure air is formed, and a maximum gap distance between electrodes is 8 mm. By using the APGD plasma surface treatment device composed of contact electrodes, the surface modification of high polymer materials such as aramid fiber and polyester are studied and good effect of modifications is obtained. The present paper provides references for the researchers of industrial applications of plasma.

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A Method of Using a Carbon Fiber Spiral-Contact Electrode to Achieve Atmospheric Pressure Glow Discharge in Air

Cited by 6 publications

References 18 publications

Study of ionic wind based on dielectric barrier discharge of carbon fiber spiral electrode

Study of ionic wind based on dielectric barrier discharge of carbon fiber spiral electrode

Study on the atmospheric pressure homogeneous discharge in air assisted with a floating carbon fibre microelectrode

Exploration to generate atmospheric pressure glow discharge plasma in air

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