Influence of temperature and relative humidity on aging of atmospheric plasma jet treatment effect on ultrahigh-modulus polyethylene fibers

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.

Download Full-text

Sterilization of bacillus subtilis spores using an atmospheric plasma jet

2012 Abstracts IEEE International Conference on Plasma Science ◽

10.1109/plasma.2012.6383699 ◽

2012 ◽

Author(s):

Jie Shen ◽

Cheng Cheng ◽

Shidong Fang ◽

Hongbing Xie ◽

Longwei Cheng ◽

...

Keyword(s):

Bacillus Subtilis ◽

Plasma Jet ◽

Atmospheric Plasma

Download Full-text

Influence of temperature and relative humidity on early bond strengths to dentine

Journal of Dentistry ◽

10.1016/0300-5712(95)90659-6 ◽

1995 ◽

Vol 23 (1) ◽

pp. 41-45 ◽

Cited By ~ 21

Author(s):

M.F. Burrow ◽

Y. Taniguchi ◽

T. Nikaido ◽

M. Satoh ◽

N. Inai ◽

...

Keyword(s):

Relative Humidity ◽

Influence Of Temperature ◽

Bond Strengths

Download Full-text

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

Plasma Processes and Polymers ◽

10.1002/ppap.200931109 ◽

2009 ◽

Vol 6 (S1) ◽

pp. S530-S536 ◽

Cited By ~ 18

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

Download Full-text

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

10.21203/rs.3.rs-941521/v1 ◽

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.

Download Full-text