scholarly journals Influence of a Helium–Nitrogen RF Plasma Jet on Onion Seed Germination

2020 ◽  
Vol 10 (24) ◽  
pp. 8973
Author(s):  
Agnieszka Starek-Wójcicka ◽  
Agnieszka Sagan ◽  
Piotr Terebun ◽  
Michał Kwiatkowski ◽  
Piotr Kiczorowski ◽  
...  
Keyword(s):  
Seed Germination ◽  
Radio Frequency ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Morphological Properties ◽  
Rf Plasma ◽  
Onion Seed ◽  
The Impact ◽  
Germination Parameters ◽  
Stimulation Of

This paper presents an experiment using a radio frequency atmospheric pressure plasma jet to generate cold plasma for pre-sowing stimulation of Wolska onion seeds. Impact of the He + N2 afterglow plasma on germination was investigated. Eight groups of seeds characterized by different exposure times (2, 5, 10, 15, 60, 120, 240, and 480 s) and distance from the electrodes (20 mm and 50 mm) were used. Pre-sowing plasma stimulation of the seeds improved the germination capacity and germination energy for all tested groups, relative to control. The impact of radio frequency plasma on the onion seed germination parameters was statistically significant. The highest germination parameters were obtained for seeds stimulated for 240 s at a distance of 50 mm. No significant differences in physical and morphological properties of onion seeds were found.

scholarly journals Low Temperature Deposition of TiO2 Thin Films through Atmospheric Pressure Plasma Jet Processing

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 91
Author(s):  
Suresh Gosavi ◽  
Rena Tabei ◽  
Nitish Roy ◽  
Sanjay S. Latthe ◽  
Y. M. Hunge ◽  
...  
Keyword(s):  
Thin Films ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Morphological Properties ◽  
Photocatalytic Decomposition ◽  
Atmospheric Pressure Plasma Jet ◽  
Tio2 Thin Films ◽  
X Ray ◽  
Pressure Plasma

Titanium dioxide (TiO2) has been widely used as a catalyst material in different applications such as photocatalysis, solar cells, supercapacitor, and hydrogen production, due to its better chemical stability, high redox potential, wide band gap, and eco-friendly nature. In this work TiO2 thin films have been deposited onto both glass and silicon substrates by the atmospheric pressure plasma jet (APPJ) technique. The structure and morphological properties of TiO2 thin films are studied using different characterization techniques like X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and field emission scanning electron microscopy. XRD study reveals the bronze-phase of TiO2. The XPS study shows the presence of Ti, O, C, and N elements. The FE-SEM study shows the substrate surface is well covered with a nearly round shaped grain of different size. The optical study shows that all the deposited TiO2 thin films exhibit strong absorption in the ultraviolet region. The oleic acid photocatalytic decomposition study demonstrates that the water contact angle decreased from 80.22 to 27.20° under ultraviolet illumination using a TiO2 photocatalyst.

scholarly journals Stimulating effects of plasma and radio-wave treatments of red clover seeds on morphological and physiological parameters of seedlings

2020 ◽  
Vol 65 (2) ◽  
pp. 191-198
Author(s):  
H. L. Nedved ◽  
J. N. Kalatskaja ◽  
N. A. Laman ◽  
V. V. Minkova ◽  
K. M. Herasimovich ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Phenolic Compounds ◽  
Seed Germination ◽  
Plasma Treatment ◽  
Radio Wave ◽  
Growth And Development ◽  
Red Clover ◽  
Rf Plasma ◽  
Plant Leaves ◽  
Stimulation Of

It was established that the treatment of clover seeds with radio frequency (RF) electromagnetic field and low pressure (200 Pa) RF plasma excited at a frequency of 5.28 MHz has a stimulating effect both on the germination of seeds and on the growth and development of plants grown in laboratory and field conditions. Plasma treatment for 5 min led to the greatest stimulation of seed germination and germination energy, a significant increase in the biomass of shoots and roots. At the same time, the content of phenolic compounds and flavonoids in plant leaves decreased.

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