An Atmospheric Pressure Nonequilibrium Plasma Jet Device

2008 ◽  
Vol 36 (4) ◽  
pp. 986-987 ◽  
Author(s):  
Qing Xiong ◽  
Xin Pei Lu ◽  
Zhong He Jiang ◽  
Zhi Yuan Tang ◽  
Jing Hu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Nonequilibrium Plasma

Studying of Plasma- Polymerized Pyrrole at Variable Gas Flow Rates Via Plasma Jet

2021 ◽  
Vol 19 (48) ◽  
pp. 44-51
Author(s):  
Saba Jawad Kadhem
Keyword(s):  
Flow Rate ◽  
Atmospheric Pressure ◽  
Gas Flow ◽  
Flow Characteristics ◽  
Atmospheric Pressure Plasma ◽  
Optical Emission ◽  
Plasma Jet ◽  
Nonequilibrium Plasma ◽  
Nano Particles ◽  
Vis Spectroscopy

     In this manuscript has investigated the synthesis of plasma-polymerized pyrrole (C4H5N) nano-particles prepared by the proposed atmospheric pressure nonequilibrium plasma jet through the parametric studies, particularly gas flow rate (0.5, 1 and 1.5 L/min). The plasma jet which used operates with alternating voltage 7.5kv and frequency 28kHz. The plasma-flow characteristics were investigated based on optical emission spectroscopy (OES). UV-Vis spectroscopy was used to characterize the  oxidization  state for polypyrrole. The major absorption appears around 464.1, 449.7 and 435.3  nm at the three flow rate of argon gas. The chemical composition and structural properties of the contained samples which synthesized at 0.5 L/min as a argon flow rate were analyzed by scanning electron microscopy (SEM), Fourier transformation infrared spectroscopy (FTIR), Raman spectroscopy and X-ray diffraction (XRD). SEM point to a uniform distribution of polypyrrole (PPY) nanoparticles matrix. XRD technique showed a semicrystalline pattern for PPY)thin film. It is expected, that the high-quality plasma polymer grown by atmospheric pressure plasma jet method contributes to serving as conducting materials.

scholarly journals Highly efficient synthesis of [60]fullerene oxides by plasma jet

2017 ◽  
Vol 4 (9) ◽  
pp. 170658 ◽  
Author(s):  
Sheng-Peng Jiang ◽  
Shengxia Duan ◽  
Kai-Qing Liu ◽  
Xiao-Yu Yang ◽  
Cheng Cheng ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Theoretical Calculations ◽  
Chemical Shifts ◽  
Plasma Jet ◽  
Nonequilibrium Plasma ◽  
Efficient Synthesis ◽  
Structural Assignment ◽  
High Yields ◽  
First Time ◽  
C Nmr

Atmospheric pressure nonequilibrium plasma jet has been applied to the synthesis of [60]fullerene oxides (C 60 O n ) for the first time. C 60 O and C 60 O 2 were produced and isolated in high yields up to 44% and 21%, respectively. The structural assignment of C 60 O was confirmed by comparison with the reported spectroscopic data. Theoretical calculations of 13 C NMR chemical shifts for eight isomers of C 60 O 2 were performed and compared with the experimental data to assign the most possible structure for the obtained C 60 O 2 dominantly as an e isomer.

Effect of Atmospheric-Pressure Helium Plasma Jet on Cell Culture Medium

2013 ◽  
Vol 133 (5) ◽  
pp. 278-285
Author(s):  
Norimitsu Takamura ◽  
Douyan Wang ◽  
Takao Satoh ◽  
Takao Namihira ◽  
Hisato Saitoh ◽  
...  
Keyword(s):  
Cell Culture ◽  
Atmospheric Pressure ◽  
Culture Medium ◽  
Plasma Jet ◽  
Helium Plasma ◽  
Cell Culture Medium

scholarly journals The influence of gas humidity on the discharge properties of a microwave atmospheric-pressure coaxial plasma jet

AIP Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 025131
Author(s):  
Jie Yu ◽  
Wencong Zhang ◽  
Xiao Wu ◽  
Li Wu ◽  
Junwu Tao ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Plasma Jet

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

Micromachines ◽  
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.

Enhancement Propagation of Protocorms in Orchid (Cymbidium tracyanum L. Castle) by Cold Atmospheric Pressure Air Plasma Jet

2021 ◽  
Author(s):  
Sorapong Pavasupree ◽  
Nattapong Chanchula ◽  
Atipong Bootchanont ◽  
Chakkaphan Wattanawikkam ◽  
Pinit Jitjing ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Air Plasma
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