Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

Wang, Chuang; Chen, Xi; Ouyang, Jiting; Fu, Jialu

doi:10.20944/preprints201810.0471.v1

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…In configuration E, a needle corona [ 46 ] was supplied with high voltage (HV) from the CeraPlas™F over a plasma bridge [ 47 ]. This HV causes an atmospheric air corona discharge on the tip of the needle electrode.…”

Section: Methodsmentioning

confidence: 99%

Visualization of Activated Area on Polymers for Evaluation of Atmospheric Pressure Plasma Jets

Korzec¹,

Andres²,

Brandes³

et al. 2021

Polymers

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The treatment of a polymer surface using an atmospheric pressure plasma jet (APPJ) causes a local increase of the surface free energy (SFE). The plasma-treated zone can be visualized with the use of a test ink and quantitatively evaluated. However, the inked area is shrinking with time. The shrinkage characteristics are collected using activation image recording (AIR). The recording is conducted by a digital camera. The physical mechanisms of activation area shrinkage are discussed. The error sources are analyzed and methods of error reduction are proposed. The standard deviation of the activation area is less than 3%. Three polymers, acrylonitrile butadiene styrene (ABS), high-density polyethylene (HDPE), and polyoxymethylene (POM), are examined as a test substrate material. Due to a wide variation range of SFE and a small hydrophobic recovery, HDPE is chosen. Since the chemical mixtures tend to temporal changes of the stoichiometry, the pure formamide test ink with 58 mN/m is selected. The method is tested for the characterization of five different types of discharge: (i) pulsed arc APPJ with the power of about 700 W; (ii) piezoelectric direct discharge APPJ; (iii) piezoelectric driven needle corona in ambient air; (iv) piezoelectric driven plasma needle in argon; and (v) piezoelectric driven dielectric barrier discharge (DBD). For piezoelectrically driven discharges, the power was either 4.5 W or 8 W. It is shown how the AIR method can be used to solve different engineering problems.

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Section: Methodsmentioning

confidence: 99%

Visualization of Activated Area on Polymers for Evaluation of Atmospheric Pressure Plasma Jets

Korzec¹,

Andres²,

Brandes³

et al. 2021

Polymers

View full text Add to dashboard Cite

show abstract

Development of an Interactive Touchless Technology Based on Static-Electricity-Induced Luminescence

Abe

Eguchi

Oyama

et al. 2023

Sensors

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Touchless technology has garnered significant interest in recent years because of its effectiveness in combating infectious diseases such as the novel coronavirus (COVID-19). The goal of this study was to develop an inexpensive and high-precision touchless technology. A base substrate was coated with a luminescent material that emitted static-electricity-induced luminescence (SEL), and it was applied at high voltage. An inexpensive web camera was used to verify the relationship between the non-contact distance to a needle and the applied-voltage-triggered luminescence. The SEL was emitted at 20–200 mm from the luminescent device upon voltage application, and the web camera detected the SEL position with an accuracy of less than 1 mm. We used this developed touchless technology to demonstrate a highly accurate real-time detection of the position of a human finger based on SEL.

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Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

Cited by 2 publications

References 23 publications

Visualization of Activated Area on Polymers for Evaluation of Atmospheric Pressure Plasma Jets

Visualization of Activated Area on Polymers for Evaluation of Atmospheric Pressure Plasma Jets

Development of an Interactive Touchless Technology Based on Static-Electricity-Induced Luminescence

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