scholarly journals Length control of He atmospheric plasma jet plumes: Effects of discharge parameters and ambient air

2009 ◽  
Vol 16 (4) ◽  
pp. 043505 ◽  
Author(s):  
Q. Xiong ◽  
X. Lu ◽  
K. Ostrikov ◽  
Z. Xiong ◽  
Y. Xian ◽  
...  
Keyword(s):  
Plasma Jet ◽  
Ambient Air ◽  
Atmospheric Plasma ◽  
Discharge Parameters ◽  
Jet Plumes

Activation of deionized water by atmospheric plasma jet in helium gas flow

2021 ◽  
Author(s):  
P. Y. Tan ◽  
O. H. Chin ◽  
R. Anpalagan ◽  
Y. T. Lau ◽  
H. C. Lee
Keyword(s):  
Gas Flow ◽  
Plasma Jet ◽  
Deionized Water ◽  
Atmospheric Plasma ◽  
Helium Gas

scholarly journals Tiny Cold Atmospheric Plasma Jet for Biomedical Applications

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 249
Author(s):  
Zhitong Chen ◽  
Richard Obenchain ◽  
Richard E. Wirz
Keyword(s):  
Biomedical Applications ◽  
Plasma Jet ◽  
Discharge Voltage ◽  
Plasma Jets ◽  
Atmospheric Plasma ◽  
Physical Parameters ◽  
Cold Atmospheric Plasma ◽  
Water Metal ◽  
Plasma Probe ◽  
Jet Nozzle

Conventional plasma jets for biomedical applications tend to have several drawbacks, such as high voltages, high gas delivery, large plasma probe volume, and the formation of discharge within the organ. Therefore, it is challenging to employ these jets inside a living organism’s body. Thus, we developed a single-electrode tiny plasma jet and evaluated its use for clinical biomedical applications. We investigated the effect of voltage input and flow rate on the jet length and studied the physical parameters of the plasma jet, including discharge voltage, average gas and subject temperature, and optical emissions via spectroscopy (OES). The interactions between the tiny plasma jet and five subjects (de-ionized (DI) water, metal, cardboard, pork belly, and pork muscle) were studied at distances of 10 mm and 15 mm from the jet nozzle. The results showed that the tiny plasma jet caused no damage or burning of tissues, and the ROS/RNS (reactive oxygen/nitrogen species) intensity increased when the distance was lowered from 15 mm to 10 mm. These initial observations establish the tiny plasma jet device as a potentially useful tool in clinical biomedical applications.

Sterilization of bacillus subtilis spores using an atmospheric plasma jet

2012 ◽  
Author(s):  
Jie Shen ◽  
Cheng Cheng ◽  
Shidong Fang ◽  
Hongbing Xie ◽  
Longwei Cheng ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Plasma Jet ◽  
Atmospheric Plasma

Nonhomogeneous surface properties of parylene-C film etched by an atmospheric pressure He/O2 micro-plasma jet in ambient air

2016 ◽  
Vol 383 ◽  
pp. 261-267 ◽  
Author(s):  
Tao Wang ◽  
Bin Yang ◽  
Xiang Chen ◽  
Xiaolin Wang ◽  
Chunsheng Yang ◽  
...  
Keyword(s):  
Surface Properties ◽  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Ambient Air ◽  
Parylene C

scholarly journals The Influence of Process Parameters on Chemistry, Roughness and Morphology of Siloxane Films Deposited by an Atmospheric Plasma Jet System

2009 ◽  
Vol 6 (S1) ◽  
pp. S530-S536 ◽  
Author(s):  
Amsarani Ramamoorthy ◽  
Mahfujur Rahman ◽  
Damian A. Mooney ◽  
James M. Don MacElroy ◽  
Denis P. Dowling
Keyword(s):  
Process Parameters ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Influence Of Process Parameters

Jet Shape Analysis and Removal Function Optimization of Atmospheric Plasma Processing Applied in Optical Fabrication

2021 ◽  
Author(s):  
Yuan Jin ◽  
Bo Wang ◽  
Peng Ji ◽  
Zheng Qiao ◽  
Duo LI ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Rotational Symmetry ◽  
Mechanical Damage ◽  
Plasma Jet ◽  
Function Optimization ◽  
Atmospheric Plasma ◽  
Optical Fabrication ◽  
Mixed Gas ◽  
Pinch Effect ◽  
Inductively Coupled

Abstract When using Inductively Coupled Plasma (ICP) as a machining tool, its processing method based on the principle of chemical etching leads to no contact stress between the tool and the material, thereby generating no mechanical damage. In recent years, this issue has been widely concerned in the field of optical fabrication. However, there are many differences between low power ICP jet and conventional ICP jet, one of which is that the former does not easily form a rotation-symmetric removal function due to its obvious pinch effect. In this research, the electromagnetism principle of the plasma pinch effect was analyzed firstly, and the jet shape under the pinch effect was classified. Then, experimental study was carried out on the plasma jet shape under the pure Ar and mixed gas of CF4-Ar, and the influence law of the reaction gas on the jet propagation shape was analyzed. Finally, the rotational symmetry of the removal function of plasma jet processing was optimized, and the nozzle design criteria based on pinch effect were proposed.

Human Mononuclear Cell Survival and Proliferation is Modulated by Cold Atmospheric Plasma Jet

2013 ◽  
Vol 10 (8) ◽  
pp. 706-713 ◽  
Author(s):  
Sander Bekeschus ◽  
Kai Masur ◽  
Julia Kolata ◽  
Kristian Wende ◽  
Anke Schmidt ◽  
...  
Keyword(s):  
Cell Survival ◽  
Mononuclear Cell ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Cold Atmospheric Plasma ◽  
Human Mononuclear Cell ◽  
Cell Survival And Proliferation

scholarly journals A New Cold Plasma Jet: Performance Evaluation of Cold Plasma, Hybrid Plasma and Argon Plasma Coagulation

Plasma ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 189-200 ◽  
Author(s):  
Lawan Ly ◽  
Sterlyn Jones ◽  
Alexey Shashurin ◽  
Taisen Zhuang ◽  
Warren Rowe ◽  
...  
Keyword(s):  
Cold Plasma ◽  
Ex Vivo ◽  
Argon Plasma Coagulation ◽  
Tumor Resection ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Atmospheric Plasma ◽  
Tissue Temperature ◽  
Plasma Coagulation ◽  
Plasma Energy

The use of plasma energy has expanded in surgery and medicine. Tumor resection in surgery and endoscopy has incorporated the use of a plasma scalpel or catheter for over four decades. A new plasma energy has expanded the tools in surgery: Cold Atmospheric Plasma (CAP). A cold plasma generator and handpiece are required to deliver the CAP energy. The authors evaluated a new Cold Plasma Jet System. The Cold Plasma Jet System consists of a USMI Cold Plasma Conversion Unit, Canady Helios Cold Plasma® Scalpel, and the Canady Plasma® Scalpel in Hybrid and Argon Plasma Coagulation (APC) modes. This plasma surgical system is designed to remove the target tumor with minimal blood loss and subsequently spray the local area with cold plasma. In this study, various operational parameters of the Canady Plasma® Scalpels were tested on ex vivo normal porcine liver tissue. These conditions included various gas flow rates (1.0, 3.0, 5.0 L/min), powers (20, 40, 60 P), and treatment durations (30, 60, 90, 120 s) with argon and helium gases. Plasma length, tissue temperature changes, and depth and eschar injury magnitude measurements resulting from treatment were taken into consideration in the comparison of the scalpels. The authors report that a new cold plasma jet technology does not produce any thermal damage to normal tissue.

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