Investigation on Parameters of Atmospheric Pressure Plasma Jet by Electrical and Optical Methods

The atmospheric pressure plasma jet works under atmospheric pressure condition, has been developed for surface treatment and biomedical applications. The produced jet has been characterized by electrical and optical methods. To characterize cold atmospheric argon plasma discharge, its electron density, and electron energy (temperature) at various conditions have been estimated by using different techniques such as power balance, stark broadening, and intensity ratio methods respectively. Atmospheric pressure plasma jet (APPJ) has drawn much attention all over the world due to its applications in material processing, biomedical material processing, and thin film deposition. APPJ has been produced, using a high voltage and high frequency power supply (0-20 kV) and an operating frequency of 20 kHz. Results showed that the electron density was of the order of 1014 cm-3 and 1016 cm-3 as determined by power balance, intensity ratio, and stark broadening methods respectively while electron temperature was estimated to be about 0.46 eV and 0.53 eV at 3 kV and 4 kV respectively by using intensity ratio method. The energy dissipation per cycle of the discharge was also estimated by using the Lissajous figure method. Our results confirmed that the parameter such as electron temperature and density depend on the applied voltage, gas flow rate, and electrode distance as well.

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Emission Spectroscopic Characterization of a Helium Atmospheric Pressure Plasma Jet with Various Mixtures of Argon Gas in the Presence and the Absence of De-Ionized Water as a Target

Plasma ◽

10.3390/plasma2030020 ◽

2019 ◽

Vol 2 (3) ◽

pp. 283-293 ◽

Cited By ~ 4

Author(s):

Bolouki ◽

Hsieh ◽

Li ◽

Yang

Keyword(s):

Flow Rate ◽

Atmospheric Pressure ◽

Atmospheric Pressure Plasma ◽

Plasma Jet ◽

Spectroscopic Characterization ◽

Atmospheric Pressure Plasma Jet ◽

Stark Broadening ◽

Boltzmann Plot ◽

Argon Gas ◽

Pressure Plasma

A helium-based atmospheric pressure plasma jet (APPJ) with various flow rates of argon gas as a variable working gas was characterized by utilizing optical emission spectroscopy (OES) alongside the plasma jet. The spectroscopic characterization was performed through plasma exposure in direct and indirect interaction with and without de-ionized (DI) water. The electron density and electron temperature, which were estimated by Stark broadening of atomic hydrogen (486.1 nm) and the Boltzmann plot, were investigated as a function of the flow rate of argon gas. The spectra obtained by OES indicate that the hydroxyl concentrations reached a maximum value in the case of direct interaction with DI water as well as upstream of the plasma jet for all cases. The relative intensities of hydroxyl were optimized by changing the flow rate of argon gas.

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Improvement of hydrophilicity of polyamide using atmospheric pressure plasma jet

BIBECHANA ◽

10.3126/bibechana.v17i0.26869 ◽

2020 ◽

Vol 17 ◽

pp. 133-138 ◽

Cited By ~ 1

Author(s):

H B Baniya ◽

R P Guragain ◽

B Baniya ◽

G Qin ◽

D P Subedi

Keyword(s):

Material Processing ◽

Surface Modification ◽

Atmospheric Pressure ◽

Atmospheric Pressure Plasma ◽

Polymeric Materials ◽

Plasma Jet ◽

Angle Measurement ◽

Atmospheric Pressure Plasma Jet ◽

High Voltage Power Supply ◽

Pressure Plasma

Atmospheric Pressure Plasma Jet (APPJ) has many applications in material processing such as surface modification and biomedical material processing. APPJ has been generated by a high voltage power supply (0-20 KV) at an operating frequency of (20-30) 23 kHz. This paper reports the generation and characterization of APPJ in Argon environment and its application in the surface modification of polymeric materials. The discharge has been characterized by optical and electrical methods. In order to characterize the plasma jet, its electron temperature and electron density has been determined by optical emissions spectroscopy. The surface properties of the untreated and plasma treated Polyamide (PA) samples were characterized by contact angle measurement and surface energy analysis. BIBECHANA 17 (2020) 133-138

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Cold Atmospheric Pressure Plasma Jet for the Improvement of Wettability of Polypropylene

International Journal of Polymer Science ◽

10.1155/2020/3860259 ◽

2020 ◽

Vol 2020 ◽

pp. 1-9

Author(s):

Hom Bahadur Baniya ◽

Rajesh Prakash Guragain ◽

Binod Baniya ◽

Deepak Prasad Subedi

Keyword(s):

Atmospheric Pressure ◽

Atmospheric Pressure Plasma ◽

Plasma Jet ◽

Angle Measurement ◽

Optical Methods ◽

Atmospheric Pressure Plasma Jet ◽

Atmospheric Conditions ◽

High Voltage Power Supply ◽

Pressure Plasma ◽

Cold Atmospheric Pressure Plasma

This paper reports the generation of cold plasma jet working under atmospheric pressure condition, for surface treatment of polymeric films. The discharge has been characterized by electrical and optical methods. The electrical property of the discharge has been studied by taking current-voltage wave forms using voltage and current probes. The production of argon plasma jet is done in atmospheric conditions which are relatively much cheaper, convenient, and safer to use. The atmospheric pressure plasma jet sustained in pure argon has been used to improve wettability of polypropylene (PP). Cold atmospheric pressure plasma jet (CAPPJ) has been generated by a high-voltage power supply (5.5 kV, 0-20 kV) at an operating frequency of 20 kHz. The surface properties of the controls and plasma-treated PP samples were characterized by contact angle measurement, surface free energy measurement, scanning electron microscopy, and the Fourier transform-infrared spectroscopy analysis.

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Generation and Characterization of an Atmospheric-Pressure Plasma Jet (APPJ) and Its Application in the Surface Modification of Polyethylene Terephthalate

International Journal of Polymer Science ◽

10.1155/2020/9247642 ◽

2020 ◽

Vol 2020 ◽

pp. 1-7

Author(s):

Hom Bahadur Baniya ◽

Rajendra Shrestha ◽

Rajesh Prakash Guragain ◽

Mohan Bahadur Kshetri ◽

Bishnu Prasad Pandey ◽

...

Keyword(s):

Material Processing ◽

Surface Modification ◽

Polyethylene Terephthalate ◽

Atmospheric Pressure ◽

Atmospheric Pressure Plasma ◽

Plasma Jet ◽

Film Deposition ◽

Atmospheric Pressure Plasma Jet ◽

Pressure Plasma

An atmospheric-pressure plasma jet (APPJ) has a lot of applications in recent years such as in material processing, surface modification, biomedical material processing, and thin film deposition. APPJ has been generated by a high-voltage power supply (0-20 kV) at an operating frequency of 27 kHz. This paper reports the generation and characterization of APPJ in argon environment and its application in the surface modification of polyethylene terephthalate (PET). The plasma jet has been characterized by electrical and optical methods. In order to characterize the plasma jet, electron density and electron temperature have been determined. The surface roughness of the untreated and plasma-treated PET samples was characterized by contact angle measurement, surface energy analysis, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and atomic force microscopy (AFM).

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High-Accuracy Surface Topography Manufacturing for Continuous Phase Plates Using an Atmospheric Pressure Plasma Jet

Micromachines ◽

10.3390/mi12060683 ◽

2021 ◽

Vol 12 (6) ◽

pp. 683

Author(s):

Huiliang Jin ◽

Caixue Tang ◽

Haibo Li ◽

Yuanhang Zhang ◽

Yaguo Li

Keyword(s):

Surface Topography ◽

Atmospheric Pressure ◽

High Efficiency ◽

Atmospheric Pressure Plasma ◽

Plasma Jet ◽

Continuous Phase ◽

High Accuracy ◽

Phase Plate ◽

Atmospheric Pressure Plasma Jet ◽

Pressure Plasma

The continuous phase plate (CPP) is the vital diffractive optical element involved in laser beam shaping and smoothing in high-power laser systems. The high gradients, small spatial periods, and complex features make it difficult to achieve high accuracy when manufacturing such systems. A high-accuracy and high-efficiency surface topography manufacturing method for CPP is presented in this paper. The atmospheric pressure plasma jet (APPJ) system is presented and the removal characteristics are studied to obtain the optimal processing parameters. An optimized iterative algorithm based on the dwell point matrix and a fast Fourier transform (FFT) is proposed to improve the accuracy and efficiency in the dwell time calculation process. A 120 mm × 120 mm CPP surface topography with a 1326.2 nm peak-to-valley (PV) value is fabricated with four iteration steps after approximately 1.6 h of plasma processing. The residual figure error between the prescribed surface topography and plasma-processed surface topography is 28.08 nm root mean square (RMS). The far-field distribution characteristic of the plasma-fabricated surface is analyzed, for which the energy radius deviation is 11 μm at 90% encircled energy. The experimental results demonstrates the potential of the APPJ approach for the manufacturing of complex surface topographies.

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