Nitrogen ion dynamics in low‐pressure nitrogen plasma and plasma sheath

1990 ◽  
Vol 67 (1) ◽  
pp. 146-153 ◽  
Author(s):  
D. E. Gerassimou ◽  
S. Cavadias ◽  
D. Mataras ◽  
D. E. Rapakoulias
Keyword(s):  
Low Pressure ◽  
Nitrogen Plasma ◽  
Plasma Sheath ◽  
Ion Dynamics ◽  
Nitrogen Ion

scholarly journals Effect of Low-Pressure Plasma Treatment Parameters on Wrinkle Features

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3852
Author(s):  
Bongjun Gu ◽  
Dongwook Ko ◽  
Sungjin Jo ◽  
Dong Choon Hyun ◽  
Hyeon-Ju Oh ◽  
...  
Keyword(s):  
Power Flow ◽  
Treatment Time ◽  
Argon Plasma ◽  
Negative Ions ◽  
Low Pressure ◽  
Nitrogen Plasma ◽  
Pressure Plasma ◽  
Positive Ions ◽  
Low Pressure Plasma ◽  
Optical Adhesive

Wrinkles attract significant attention due to their ability to enhance the mechanical and optical characteristics of various optoelectronic devices. We report the effect of the plasma gas type, power, flow rate, and treatment time on the wrinkle features. When an optical adhesive was treated using a low-pressure plasma of oxygen, argon, and nitrogen, the oxygen and argon plasma generated wrinkles with the lowest and highest wavelengths, respectively. The increase in the power of the nitrogen and oxygen plasma increased the wavelengths and heights of the wrinkles; however, the increase in the power of the argon plasma increased the wavelengths and decreased the heights of the wrinkles. Argon molecules are heavier and smaller than nitrogen and oxygen molecules that have similar weights and sizes; moreover, the argon plasma comprises positive ions while the oxygen and nitrogen plasma comprise negative ions. This resulted in differences in the wrinkle features. It was concluded that a combination of different plasma gases could achieve exclusive control over either the wavelength or the height and allow a thorough analysis of the correlation between the wrinkle features and the characteristics of the electronic devices.

scholarly journals Biofilm grown on wood waste pretreated with cold low-pressure nitrogen plasma: Utilization for toluene remediation

2019 ◽  
Vol 139 ◽  
pp. 62-69 ◽  
Author(s):  
Ravit Farber ◽  
Inbal Dabush-Busheri ◽  
Gilad Chaniel ◽  
Shmuel Rozenfeld ◽  
Edward Bormashenko ◽  
...  
Keyword(s):  
Low Pressure ◽  
Nitrogen Plasma ◽  
Wood Waste

Study of a low pressure nitrogen plasma jet

1995 ◽  
Vol 2 (7) ◽  
pp. 2853-2862 ◽  
Author(s):  
P. Domingo ◽  
A. Bourdon ◽  
P. Vervisch
Keyword(s):  
Plasma Jet ◽  
Low Pressure ◽  
Nitrogen Plasma

Simulate the Process of Nitriding Depth on the Surface of Titanium by Mixing Laser and Nitrogen Plasma Nitriding Approach

2013 ◽  
Vol 321-324 ◽  
pp. 305-308
Author(s):  
Guo Jian Zhao
Keyword(s):  
Plasma Nitriding ◽  
Surface Hardness ◽  
Nitrogen Plasma ◽  
Model Description ◽  
Angle Of Incidence ◽  
Scanning Velocity ◽  
Ion Energy ◽  
C Language ◽  
Power Intensity ◽  
Nitrogen Ion

An approach by mixing laser and plasma to conduct nitriding treatment on the surface of titanium can improve the surface hardness, and the hardness of the surface in different nitriding depth is different. We wrote a program, by which we carried out Monte Carlo simulation calculation, in accordance with the model description by C language. In the calculation process, by changing laser power intensity, scanning velocity, nitrogen ion energy and angle of incidence, we got the distribution of nitrogen ions in iron under different conditions, and thus formed computer simulation diagram of titanium nitride process.

scholarly journals Biofilm formation on agricultural waste pretreated with cold low-pressure nitrogen plasma and corona plasma discharges

2018 ◽  
Author(s):  
Ravit Farber ◽  
Inbal Dabush-Busheri ◽  
Gilad Chaniel ◽  
Shmuel Rozenfeld ◽  
Edward Bormashenko ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Biofilm Formation ◽  
Minimal Medium ◽  
Agricultural Waste ◽  
Fold Increase ◽  
Low Pressure ◽  
Nitrogen Plasma ◽  
Bacterial Attachment ◽  
Plasma Discharges ◽  
Indigenous Bacteria

AbstractAgricultural waste (AW) was pretreated with cold low-pressure nitrogen plasma (LPD) and corona atmospheric plasma discharges (CAPD), in an attempt to increase the bacterial attachment and biofilm formation. Biofilm formation was examined in the presence of exogenously addedP. putidaandB. cereusas well as in a sterile medium where only the indigenous bacteria which grow naturally on the wood surface could form biofilm. The exposure of AW to (LPD) led to a 3.5-fold increase in biofilm formation of the exogenously addP. putidaF1 in MMT (minimal medium supplied with toluene) and a 1.6-fold increase in MMG (minimal medium supplied with glucose) compared to the untreated AW. The increase in biofilm formation was also observed with the exogenously addedB. cereusor with indigenous bacteria that grow naturally on the AW. The effect of the CAPD on biofilm formation was weak. SEM analysis of the LPD-treated AW showed an increase in surface roughness, which we assume is one of the reasons for the enhancement of the biofilm formation. The apparent contact angle of a sessile drop on the surface of LPD-treated AW as well as on the bacterial layer showed their hydrophilic nature. In conclusion, the increase in biofilm formation of the exogenously addedP. putidaorB. cereuswas due to the LPD treatment.ImportanceTo the best of our knowledge, this is the first study to describe the effect of wood plasma treatment on biofilm formation. This technology can be further implemented for bioremediation of contaminated soils.

Titanium Surface Hardening by Pulsed Nitrogen Ion Implantation

1992 ◽  
Vol 268 ◽  
Author(s):  
Jorge Feugeas ◽  
G. Sanchez ◽  
G. Grigioni ◽  
C.O. de Gonzalez
Keyword(s):  
Surface Hardening ◽  
Titanium Surface ◽  
Pure Titanium ◽  
Nitrogen Plasma ◽  
Thermal Gradients ◽  
Plasma Bubble ◽  
Plasma Gun ◽  
Nitrogen Ion Implantation ◽  
Getter Effect ◽  
Nitrogen Ion

ABSTRACTLayers of TiN have been developed on pure titanium samples using pulsed ion beams generated with a Plasma Gun operated in the detonation mode.XPS analyses show TiNx formation in depths >0.6μm, with stoichiometric x>0.8. The efficient TiN formation in this process can be attributed to the fast energy released by the pulsed beams, which can increase the surface layer temperatures at a ∼15K/ns rate, generating thermal gradients of ∼1500K/μm. This thermal effect can help the titanium getter effect on the nitrogen plasma bubble.

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