Analysis of Space Charge Distribution in dc Corona Discharge Field Computed With Finite-Element Method

Marčiulionis, P.

doi:10.1109/tps.2017.2712193

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…The second one is a hydrodynamic fluid model, which solves three continuity equations of charged particles (electron, positive and negative ions) coupled with Poisson's equation [12][13][14]. The third one is an ion flow transport equation (based on the Kaptzov hypothesis which ignores ionization), which uses an ion source to replace its ionization region and uses ion number density as its boundary condition [15].…”

Section: Introductionmentioning

confidence: 99%

A hybrid approach for corona discharge in needle electrode configuration: in a large-scale space

Liu

Wang

et al. 2020

Plasma Sources Sci. Technol.

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Needle electrodes are widely used as the discharge electrode in charged particle-generating apparatus to study discharge characteristics due to their high efficiency. However, for the charged particle distribution of needle electrode corona discharge in a large-scale space (tens or even hundreds of centimeters), there is still a lack of an effective numerical simulation method. To solve this problem, a hybrid approach based on the combination of a hydrodynamic fluid model and an ion flow transport equation (ion drift model, based on the Kaptzov hypothesis) is put forward in this paper. The principle and implementation of the proposed method is introduced in detail. Further, the good consistency of the numerical simulation and a series of experiments under various applied voltages with two type sphere (radius 25 cm) apparatus, by comparing the charged particle density and discharge current, has demonstrated the accuracy and feasibility of the hybrid approach. This research provides an approach for the further study of corona discharge in a large-scale space, and implies the precise control potential in the application of low-temperature plasma, such as plasma material treatment, water treatments, gas disposal and so on.

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Section: Introductionmentioning

confidence: 99%

A hybrid approach for corona discharge in needle electrode configuration: in a large-scale space

Liu

Wang

et al. 2020

Plasma Sources Sci. Technol.

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“…In 2020, the Beijing Institute of Technology announced OFF-ON-OFF microelectromechanical systems based on a modified Paschen's law [19]; in this system, a comb-shaped actuator (electrode gap: 1-10 µm) was able to reduce the threshold voltage to 130 V for air breakdown [19], and the electrical state was switched in an OFF-ON-OFF sequence to complete energy grooming for abnormal interference signals. In addition, a metal-based "OFF-ON" actuator was designed based on corona discharge theory to achieve air breakdown at a threshold voltage [20][21][22][23]. These schemes can be used to provide an energy grooming function to achieve insurance control of the energetic materials.…”

Section: Introductionmentioning

confidence: 99%

Research on Insurance Method for Energetic Materials on Information Self-Destruction Chips

Feng

Lou

et al. 2022

Micromachines

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Detonation waves released by energetic materials provide an important means of physical self-destruction (Psd) for information storage chips (ISCs) in the information insurance field and offer advantages that include a rapid response and low driving energy. The high electrical sensitivity of energetic materials means that they are easily triggered by leakage currents and electrostatic forces. Therefore, a Psd module based on a graphene-based insurance actuator heterogeneously integrated with energetic materials is proposed. First, the force–balance relation between the electrostatic van der Waals force and the elastic recovery force of the insurance actuator’s graphene electrode is established to realize physical isolation and an electrical interconnection between the energetic materials and the peripheral electrical systems. Second, a numerical analysis of the detonation wave stress of the energetic materials in the air domain is performed, and the copper azide dosage required to achieve reliable ISC Psd is obtained. Third, the insurance actuator is prepared via graphene thin film processing and copper azide is prepared via an in situ reaction. The experimental results show that the energetic materials proposed can release physical isolation within 14 μs and can achieve ISC Psd under the application of a voltage signal (4.4–4.65 V). Copper azide (0.45–0.52 mg) can achieve physical damage over an ISC area (23.37–35.84 mm2) within an assembly gap (0.05–0.25 mm) between copper azide and ISC. The proposed method has high applicability for information insurance.

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“…As an important part of scientific and technological papers, mathematical expressions can be used as one of the key words in the retrieval of scientific and technological papers, but they contain images, Word, PDF, Tex LaTeX, and other formats, with complex structure, variable form, and difficult retrieval [8]. Although the current research on mathematical expression retrieval has made some progress, these retrieval systems do not contain personalized recommendation models [9]. Therefore, in this research, it studies the application of collaborative filtering algorithm in mathematical expression retrieval model, aiming at improving the current situation of user personalized information in mathematical expression retrieval and providing effective retrieval approaches.…”

Section: Introductionmentioning

confidence: 99%

Application of Collaborative Filtering Algorithm in Mathematical Expressions of User Personalized Information Recommendation

Qian¹

2019

IJCIS

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In order to solve the shortcomings of the existing mathematical expressions of the user's personalized recommendation search and to increase the accuracy of the user's personalized information recommendation, in this study, the collaborative filtering algorithm, the related theory of fuzzy sets, and the evaluation methods were introduced at first. Then, the establishment of collaborative filtering model and working principle, user similarity measure, generation of mathematical expression recommendation list, design of mathematical expression recommendation model and implementation of function were introduced. Finally, the application of the collaborative filtering algorithm in the user's personalized information recommendation mathematical expression was verified by collecting data. The results showed that the recommendation mathematical expression model based on collaborative filtering algorithm had higher accuracy in collecting user personalized information, and the accuracy of the system was higher than other recommendation algorithms, which can better meet the individual needs of users. This research can provide a fast and convenient way for users to search for personalized information, and has a good guiding significance for the retrieval and recommendation of informational scientific and technical literature.

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Analysis of Space Charge Distribution in dc Corona Discharge Field Computed With Finite-Element Method

Cited by 12 publications

References 17 publications

A hybrid approach for corona discharge in needle electrode configuration: in a large-scale space

A hybrid approach for corona discharge in needle electrode configuration: in a large-scale space

Research on Insurance Method for Energetic Materials on Information Self-Destruction Chips

Application of Collaborative Filtering Algorithm in Mathematical Expressions of User Personalized Information Recommendation

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