Application of cold plasma to control the microbiota composition on the surface of potato tubers

A study of the effect of low-temperature plasma on potato tubers was carried out. A comparative assessment of changes in the rate of germination, the size of shoots and the mass of shoots was carried out. Changes in the number of bacteria and fungi on the surface of tubers were analysed for different durations of exposure. It was found that growth characteristics did not change. The number of bacteria on the surface of tubers was significantly reduced due to the exposure to low-temperature plasma.

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Restrained Shrinkage Ring Test on Polymer Fibres Treated in Cold Plasma Discharge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.464.25 ◽

2013 ◽

Vol 464 ◽

pp. 25-30 ◽

Cited By ~ 1

Author(s):

Daniel Kopkáně ◽

Lenka Bodnárová ◽

Rudolf Hela

Keyword(s):

Low Temperature ◽

Cold Plasma ◽

Plasma Discharge ◽

Ring Test ◽

Cement Matrix ◽

Restrained Shrinkage ◽

Low Temperature Plasma ◽

Polypropylene Fibres ◽

Temperature Plasma ◽

Positive Correlation

The paper refers to utilization of low temperature plasma discharge in air on polypropylene fibres. Such fibres have been tested in concrete as reinforcement. The effect has been tested by restrain ring test. The experiment proved positive correlation between time of exposure and cracks suppression. The effect is considered as improved cohesion of polymer fibres with cement matrix.

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Cold Plasma in Medicine and Healthcare: The New Frontier in Low Temperature Plasma Applications

Frontiers in Physics ◽

10.3389/fphy.2020.00074 ◽

2020 ◽

Vol 8 ◽

Cited By ~ 9

Author(s):

Mounir Laroussi

Keyword(s):

Low Temperature ◽

Cold Plasma ◽

Low Temperature Plasma ◽

Temperature Plasma ◽

New Frontier ◽

Plasma Applications

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Numerical simulation of unsteady flows of cold plasma during plasma actuator operation

Kosmìčna nauka ì tehnologìâ ◽

10.15407/knit2021.01.085 ◽

2021 ◽

Vol 27 (1) ◽

pp. 85-96

Author(s):

D.O. Redchyts ◽

S.V. Moiseienko

Keyword(s):

Numerical Simulation ◽

Low Temperature ◽

Electric Potential ◽

Cold Plasma ◽

Barrier Discharge ◽

Unsteady Flows ◽

Plasma Actuator ◽

Dielectric Surface ◽

Low Temperature Plasma ◽

Temperature Plasma

The numerical simulation of unsteady flows of cold plasma is considered in this article. A low-temperature non-equilibrium ideal plasma is formed when the plasma actuator interacts with the air. The mathematical model has been developed to describe the behavior of low-temperature plasma. It is based on non-stationary equations describing the dynamics of charged particles and plasma electrodynamics equations. The 14 types of particles: metastable and excited nitrogen and oxygen atoms, positive and negative ions, electrons and atomic oxygen are considered. Volumetric and surface chemical reactions describing processes in a barrier discharge that occur above the dielectric surface are considered. For non-stationary equations of plasma dynamics, an implicit numerical algorithm with pseudo-time iteration has been developed, which is based on a finite-volume approach. The equation for the electrostatic potential with sources was solved using the generalized minimal residual method with incomplete LU preconditioning. In non-stationary equations for the density of plasma particles, the drift derivatives were approximated using the TVD scheme with the MinMod limiter function. The derivatives in the equation for the electric potential were calculated using finite-volume relations taking into account the upwind approximation of the concentration of charged plasma particles. The numerical results of the generation, propagation and destruction of a streamer during a dielectric barrier discharge are obtained. The unsteady plasma characteristics in the region above the dielectric surface are analyzed, including the distribution of the particles density, electric potential and the Lorentz force components. The results of numerical simulation of unsteady flows of low-temperature plasma are in good agreement with the available experimental data.

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