Atmospheric plasma-calcination of mesoporous tungsten oxide utilizing plasma dielectric barrier discharge

2007 ◽  
Vol 515 (12) ◽  
pp. 4905-4908 ◽  
Author(s):  
P. Baroch ◽  
J. Hieda ◽  
N. Saito ◽  
O. Takai
Keyword(s):  
Tungsten Oxide ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Atmospheric Plasma ◽  
Dielectric Barrier

scholarly journals USE OF ATMOSPHERIC PLASMA IN GERMINATION OF Hybanthus calceolaria (L.) Schulze-Menz SEEDS

2018 ◽  
Vol 31 (3) ◽  
pp. 632-639 ◽  
Author(s):  
DINNARA LAYZA SOUZA DA SILVA ◽  
MIKELLY DE LIMA FARIAS ◽  
JUSSIER DE OLIVEIRA VITORIANO ◽  
CLODOMIRO ALVES JÚNIOR ◽  
SALVADOR BARROS TORRES
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Plasma Jet ◽  
Cost Effective ◽  
Atmospheric Plasma ◽  
Helium Plasma ◽  
Application Time ◽  
Plasma Technology ◽  
Dielectric Barrier ◽  
Weight Variation

ABSTRACT Plasma technology is a fast, cost-effective, and pollution-free method that can be used in place of conventional methods to overcome seed dormancy. The goal of the present study was to determine the effect of different application times of atmospheric plasma on soaking and germination of Hybanthus calceolaria seeds in order to accelerate these processes. Helium plasma jet produced by dielectric barrier discharge was used to treat H. calceolaria seeds with applications of 1, 5, and 10 minutes. The treated seeds were characterized considering their weight variation during soaking, changes in electrical conductivity, and pH. It was found that germination depended on the plasma application time. The treatment of H. calceolaria seeds with atmospheric plasma for 1 minute provided 3.5 times greater germination in comparison to untreated seeds. Atmospheric plasma technology obtained by dielectric barrier discharge had potential of being used as a germination accelerant in H. calceolaria seeds. The treatment of H. calceolaria seeds using atmospheric plasma for 1 minute favored germination.

Study of PVA on Polyester Desizing with Atmospheric Pressure Dielectric Barrier Discharge Plasma

2013 ◽  
Vol 681 ◽  
pp. 11-15 ◽  
Author(s):  
Li Ming Li ◽  
Yong Qiang Li ◽  
Jin Qiang Liu
Keyword(s):  
Plasma Treatment ◽  
Dielectric Barrier Discharge ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Barrier Discharge ◽  
Polyester Fabric ◽  
Atmospheric Plasma ◽  
Dielectric Barrier Discharge Plasma ◽  
Dielectric Barrier ◽  
Barrier Discharge Plasma

The effect of atmospheric pressure dielectric barrier discharge plasma treatment on desizing polyvinyl alcohol (PVA) on polyester fabric was discussed as compared desizing with alkali through a combination of desizing rate, field scanning electron microscopy and strength test. The dyeing properties of polyester fabrics treated with atmospheric plasma have also been studied. The results show that plasma treatment can improve desizing rate, surface color depth and dye-uptake for polyester fabric.

Tuning Electrode Properties and Surface Contacts for Uniform Deposits Produced by Atmospheric Plasma Dielectric Barrier Discharge Reactors

MRS Advances ◽  
2018 ◽  
Vol 3 (18) ◽  
pp. 937-942
Author(s):  
Chi-Chin Wu ◽  
Timothy A. Jenkins ◽  
James K. Hirvonen ◽  
Michael Leadore
Keyword(s):  
Dielectric Barrier Discharge ◽  
Electrode Materials ◽  
Barrier Discharge ◽  
Copper Wire ◽  
Chemical Vapor ◽  
Metal Plate ◽  
Wire Mesh ◽  
Atmospheric Plasma ◽  
Experimental Conditions ◽  
Dielectric Barrier

ABSTRACTAn investigation of the effect of experimental parameters on the temperature and uniformity of material deposition by atmospheric pressure dielectric barrier discharge (DBD) planar plasma reactors was conducted. The apparatus consisted of a pulsed AC high voltage power source with various electrode materials (aluminum, copper wire mesh, and aluminum/copper wire mesh) operating under a range of load resistances. Possible effects of non-ideal interfacial conditions for the contact surface between the electrode and the substrate were also studied with various modified surface thermal conditions. It was found that a hybrid electrode design with a fine copper (Cu) wire mesh attached to an aluminum plate of approximately 3 mm thickness produced the most visually uniform deposit, presumably as a result of both the superior conductivity provided by the Al metal plate and the stable plasma resulting from the relatively low breakdown voltage by using helium (He) as the dilution gas. Although the experimental conditions of plasma-enhanced chemical vapor deposition (PECVD) are often specific to particular systems and applications, this work provides insights on technical details which can be applied to various plasma DBD reactors.

Removal of priority pollutants from water by means of dielectric barrier discharge atmospheric plasma

2013 ◽  
Vol 262 ◽  
pp. 664-673 ◽  
Author(s):  
María Hijosa-Valsero ◽  
Ricardo Molina ◽  
Hendrik Schikora ◽  
Michael Müller ◽  
Josep M. Bayona
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Atmospheric Plasma ◽  
Priority Pollutants ◽  
Dielectric Barrier

scholarly journals Multi-Hollow Surface Dielectric Barrier Discharge for Bacterial Biofilm Decontamination

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 910
Author(s):  
Zlata Kelar Tučeková ◽  
Lukáš Vacek ◽  
Richard Krumpolec ◽  
Jakub Kelar ◽  
Miroslav Zemánek ◽  
...  
Keyword(s):  
Water Vapor ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Plasma Source ◽  
Bacterial Biofilm ◽  
Atmospheric Plasma ◽  
Source Power ◽  
Dielectric Barrier ◽  
Surface Dielectric Barrier Discharge ◽  
Plasma Activated Water

The plasma-activated gas is capable of decontaminating surfaces of different materials in remote distances. The effect of plasma-activated water vapor on Staphylococcus epidermidis, methicillin-resistant Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli biofilm contamination was investigated on the polypropylene nonwoven textile surface. The robust and technically simple multi-hollow surface dielectric barrier discharge was used as a low-temperature atmospheric plasma source to activate the water-based medium. The germicidal efficiency of short and long-time exposure to plasma-activated water vapor was evaluated by standard microbiological cultivation and fluorescence analysis using a fluorescence multiwell plate reader. The test was repeated in different distances of the contaminated polypropylene nonwoven sample from the surface of the plasma source. The detection of reactive species in plasma-activated gas flow and condensed activated vapor, and thermal and electrical properties of the used plasma source, were measured. The bacterial biofilm decontamination efficiency increased with the exposure time and the plasma source power input. The log reduction of viable biofilm units decreased with the increasing distance from the dielectric surface.

scholarly journals An Application of Cold Atmospheric Plasma to Enhance Physiological and Biochemical Traits of Basil

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2088
Author(s):  
Faezeh Mirazimi Abarghuei ◽  
Mohammad Etemadi ◽  
Asghar Ramezanian ◽  
Ali Esehaghbeygi ◽  
Javad Alizargar
Keyword(s):  
Antioxidant Activity ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Leakage Rate ◽  
Atmospheric Plasma ◽  
Ion Leakage ◽  
Biochemical Traits ◽  
Dielectric Barrier ◽  
Cold Atmospheric Plasma ◽  
Physiological And Biochemical

This study aimed to investigate the effects of dielectric barrier discharge cold atmospheric plasma on the performance of basil (Ocimum basilicum L. cv. Genovese Gigante). Evaluations were carried out on several physiological and biochemical traits, including ion leakage, water relative content, proline and protein accumulation, chlorophyll and carotenoid contents, and antioxidant activity. Before planting, basil seeds were treated by cold atmospheric plasma under voltages of 10, 15, and 20 kV for 10, 20, and 30 min. The ion leakage rate in plants was significantly affected by the interaction between plasma and radiation time. In most treatments, the application of plasma significantly reduced the ion leakage rate. The application of plasma (10 and 20 kV) for 10 min significantly increased the relative water content of basil leaves. The maximum amount of total chlorophyll and carotenoid content occurred after applying plasma for 20 min with 15 kV. Furthermore, 10 and 15 kV treatments of atmospheric cold plasma for 10 min caused a significant increase in antioxidant activity. The highest total flavonoids were obtained after applying 15 kV treatments for 20 min and 20 kV for 30 min, respectively. Cold atmospheric plasma significantly increased the activity of peroxidase as an antioxidant enzyme. Moreover, the minimum and maximum values of microbial load based on logarithm ten were reached after applying 10 kV for 30 min and in the control group, respectively. In general, the results showed that dielectric barrier discharge cold atmospheric plasma could significantly improve basil plants’ physiological and biochemical traits.

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