Spectral investigations of low-temperature plasma induced in CO2 gas by nanosecond pulses of extreme ultraviolet (EUV)

2021 ◽  
Author(s):  
Andrzej Bartnik ◽  
Wojciech Skrzeczanowski ◽  
Przemyslaw Wachulak ◽  
Tomasz Fok ◽  
Łukasz Węgrzyński ◽  
...  
Keyword(s):  
Low Temperature ◽  
Extreme Ultraviolet ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Co2 Gas ◽  
Nanosecond Pulses

Measurement of Carboxyl Group Separated from a Thin Film Copolymerized by Low-Temperature Plasma at Atmospheric Pressure of C2H2 and CO2

2006 ◽  
Vol 321-323 ◽  
pp. 1332-1335 ◽  
Author(s):  
Hong Lae Sohn ◽  
Young Tae Cho ◽  
Bong Ju Lee
Keyword(s):  
Thin Film ◽  
Low Temperature ◽  
Atmospheric Pressure ◽  
Carboxyl Group ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Flow Rates ◽  
Co2 Gas ◽  
Plasma Generation ◽  
Ft Ir

We developed a device that makes possible the normal generation of low-temperature plasma under atmospheric pressure. For plasma generation, a radio frequency of rf (13.56 MHz) was used, for plasma gas, helium (He), and for material gases, acetylene (C2H2) and toluene (C6H5CH3) were used. As a result of measuring Fourier transform infrared (FT-IR) after adding the CO2 gas to the generated plasma, the absorption of C=O (carboxyl group) was observed around 1715 cm-1. When the flow rates of the added CO2 increased, the absorption peak increased at the same time, and we knew that this originated from the CO2 molecules.

scholarly journals Physico-Chemical Surface Modifications of Polyetheretherketone (PEEK) Using Extreme Ultraviolet (EUV) Radiation and EUV-Induced Nitrogen Plasma

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4466
Author(s):  
Joanna Czwartos ◽  
Bogusław Budner ◽  
Andrzej Bartnik ◽  
Przemysław Wachulak ◽  
Henryk Fiedorowicz ◽  
...  
Keyword(s):  
Low Temperature ◽  
Photoelectron Spectroscopy ◽  
Extreme Ultraviolet ◽  
Chemical Properties ◽  
Nitrogen Plasma ◽  
Average Roughness ◽  
Temperature Plasma ◽  
Chemical Surface ◽  
Nanosecond Pulses ◽  
Physico Chemical

In this work, the effect of extreme ultraviolet (EUV) radiation and the combination of EUV radiation and low-temperature nitrogen plasma on the physico-chemical properties of polyetheretherketone (PEEK) surfaces were presented. The laser-plasma EUV source based on a double gas puff target was used in this experiment to irradiate PEEK surfaces with nanosecond pulses of EUV radiation and to produce low-temperature plasma through the photoionization of nitrogen with EUV photons. The changes in surface morphology on irradiated polymer samples were examined using atomic force microscopy (AFM) and scanning electron microscopy (SEM). Chemical changes of the PEEK surfaces were analysed using X-ray photoelectron spectroscopy (XPS). EUV radiation and nitrogen plasma treatment caused significant changes in the topography of modified PEEK’s surfaces and an increase in their average roughness. Strong chemical decomposition, appearance of new functional groups as well as incorporation of nitrogen atoms up to ~17 at.% on the PEEK’s surface were observed.

Separation of Water-Oil Emulsion Using Polyethersulfone Membranes Treated With High-Frequency Low-Temperature Plasma

2019 ◽  
Vol 23 (3) ◽  
pp. 746-754
Author(s):  
Dinar Dilshatovich Fazullin ◽  
Gennady Vitalievich Mavrin ◽  
Vladislav Olegovich Dryakhlov ◽  
Ildar Gilmanovich Shaikhiev ◽  
Irek Rashatovich Nizameyev
Keyword(s):  
Low Temperature ◽  
High Frequency ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Oil Emulsion

scholarly journals Possibility of Humid Municipal Wastes Hygienisation Using Gliding Arc Plasma Reactor

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 194
Author(s):  
Joanna Pawłat ◽  
Piotr Terebun ◽  
Michał Kwiatkowski ◽  
Katarzyna Wolny-Koładka
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Alternative Fuels ◽  
Raw Materials ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Municipal Waste ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Gliding Arc

Sterilization of municipal waste for a raw material for the production of refuse-derived fuel and to protect surface and ground waters against biological contamination during transfer and storage creates a lot of problems. This paper evaluates the antimicrobial potential of non-equilibrium plasma in relation to the selected groups of microorganisms found in humid waste. The proposed research is to determine whether mixed municipal waste used for the production of alternative fuels can be sterilized effectively using low-temperature plasma generated in a gliding arc discharge reactor in order to prevent water contamination and health risk for working staff. This work assesses whether plasma treatment of raw materials in several process variants effectively eliminates or reduces the number of selected groups of microorganisms living in mixed municipal waste. The presence of vegetative bacteria and endospores, mold fungi, actinobacteria Escherichia coli, and facultative pathogens, i.e., Staphylococcus spp., Salmonella spp., Shigella spp., Enterococcus faecalis and Clostridium perfringens in the tested material was microbiologically analyzed. It was found that the plasma treatment differently contributes to the elimination of various kinds of microorganisms in the analyzed raw materials. The effectiveness of sterilization depended mainly on the time of raw materials contact with low-temperature plasma. The results are very promising and require further research to optimize the proposed hygienization process.

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