Search results for: Mirko Černák

Items from 1 to 20 out of 62 results

article

Large‐area open air plasma sources for roll‐to‐roll manufacture

Tomáš Homola, Jakub Kelar, Mirko Černák, Dušan Kováčik

Vakuum in Forschung und Praxis > 34 > 4 > 21 - 25

The aim of the current paper is to introduce technology for the generation of high‐power density surface plasma by a diffuse coplanar surface barrier discharge (DCSBD) plasma unit. The diffuse and uniform plasma generated in low‐cost gases such as open air enables easy integration into novel or existing roll‐to‐roll (R2R) lines. We briefly discuss the history of the development of dielectric barrier...

article

Surface modification of clay‐coated paper by atmospheric‐pressure plasma in air

Vlasta Štěpánová, Dušan Kováčik, Miroslav Zemánek, Monika Stupavská, more

Surface and Interface Analysis > 52 > 12 > 840 - 844

The aim of this work was the wettability improvement of clay‐coated paper by ambient air plasma exposure. Industrial corona with a volume dielectric barrier discharge in cylindrical configuration was used as a plasma source; the exposure times varied from 0.25 up to 5 s. Water contact angle (WCA) measurement and surface free energy (SFE) evaluation were carried out for the estimation of wettability...

article

Optimization and influence of multi-hollow surface dielectric barrier discharge plasma operating conditions on the physical quality of peanut

Gebremedhin Gebremariam, Shimelis Admassu, Tarekegn Berhanu, Zlata Tučeková, more

The European Physical Journal D > 2019 > 73 > 5 > 1-16

An experiment was conducted to investigate the effects of atmospheric pressure plasma generated by multi-hollow surface dielectric barrier discharges on physical quality of peanut (Arachis Hypogea L). Multi-hollow surface dielectric barrier discharge is a novel plasma device applicable in food industry applications due to the capacity of the generated plasma to treat the surface of food without changing...

article

The future for plasma science and technology

Klaus‐Dieter Weltmann, Juergen F. Kolb, Marcin Holub, Dirk Uhrlandt, more

Plasma Processes and Polymers > 16 > 1 > n/a - n/a

The application of gas discharge plasmas has assumed an important place in many manufacturing processes. Plasma methods contribute significantly to the economic prosperity of industrialized societies. However, plasma is mainly an enabling method and therefore its role remains often hidden. Hence the success of plasma technologies is described for different examples and commercial areas. From these...

article

White paper on the future of plasma science for optics and glass

Milan Šimek, Mirko Černák, Ondřej Kylián, Rüdiger Foest, more

Plasma Processes and Polymers > 16 > 1 > n/a - n/a

This paper reflects on the future of low‐temperature plasma science in relation to the manufacturing and novel uses of glass. The text summarizes the current state of the art on the major topics discussed, such as glass processing, optics and photonics, healthcare issues, building and fenestration applications. It also identifies several challenges that are driven by applications, and which are compatible...

article

White paper on the future of plasma science and technology in plastics and textiles

Uroš Cvelbar, James L. Walsh, Mirko Černák, Hindrik W. de Vries, more

Plasma Processes and Polymers > 16 > 1 > n/a - n/a

This white paper considers the future of plasma science and technology related to the manufacturing and modifications of plastics and textiles, summarizing existing efforts and the current state‐of‐art for major topics related to plasma processing techniques. It draws on the frontier of plasma technologies in order to see beyond and identify the grand challenges which we face in the following 5–10...

article

Design and evaluation of plasma polymer deposition on hollow objects by electrical plasma generated from the liquid surface

David Pavliňák, Oleksandr Galmiz, Miroslav Zemánek, Mirko Černák

Plasma Processes and Polymers > 15 > 7 > n/a - n/a

Recently, plasma deposition at atmospheric pressure has become a promising technology due to its reduced equipment costs and its possibility of in‐line processing. The main aim of this work was to show a process for the deposition of functional layers on hollow objects surface by plasma discharge generated above the liquid electrolyte. In principle, this process is based on the surface dielectric...

article

Effect of Cold Atmospheric Pressure Plasma on Maize Seeds: Enhancement of Seedlings Growth and Surface Microorganisms Inactivation

Anna Zahoranová, Lucia Hoppanová, Juliana Šimončicová, Zlata Tučeková, more

Plasma Chemistry and Plasma Processing > 2018 > 38 > 5 > 969-988

Cold atmospheric pressure ambient air plasma generated by Diffuse Coplanar Surface Barrier Discharge (DCSBD) was investigated for inhibition of native microbiota and potentially dangerous pathogens (Aspergillus flavus, Alternaria alternata and Fusarium culmorum) on the maize surface. Moreover, the improvement of germination and growth parameters of maize seeds was evaluated. Maize (Zea mays L.; cv...

article

Atmospheric pressure plasma treatment of agricultural seeds of cucumber (Cucumis sativus L.) and pepper (Capsicum annuum L.) with effect on reduction of diseases and germination improvement

Vlasta Štěpánová, Pavel Slavíček, Jakub Kelar, Jan Prášil, more

Plasma Processes and Polymers > 15 > 2 > n/a - n/a

The paper presents the effects of plasma treatment on agricultural seeds. Cucumber and pepper seeds, widely used in agriculture, were treated using the Diffuse Coplanar Surface Barrier Discharge (DCSBD) at atmospheric pressure in ambient air. The plasma treatment (4 s for pepper, 20 s for cucumber) led to an improvement of germination and germinating power. XPS confirmed chemical changes on the seed...

article

Atmospheric pressure plasma assisted calcination by the preparation of TiO2 fibers in submicron scale

Veronika Medvecká, Dušan Kováčik, Anna Zahoranová, Mirko Černák

Applied Surface Science > 2018 > 428 > C > 609-615

Atmospheric pressure plasma assisted calcination by the preparation of TiO₂ submicron fibers as a low-temperature alternative to the conventional thermal annealing was studied. A special type of dielectric barrier discharge was used for plasma treatment of hybrid titanium butoxide/polyvinylpyrrolidone (Ti(Bu)/PVP) fibers prepared by forcespinning to decompose and oxidize the base polymer and precursor...

article

Ambient air plasma pre‐treatment of non‐woven fabrics for deposition of antibacterial poly (l‐lactide) nanoparticles

Tatiana V. Ivanova, Richard Krumpolec, Tomáš Homola, Eduard Musin, more

Plasma Processes and Polymers > 14 > 10 > n/a - n/a

Production of medical dressings specific to infected wounds remains one of the great challenges in medicine. In this paper, an integrated application that allows the immobilization of poly(l‐lactide) (PLLA) nanoparticles (NPs) containing the antimicrobial agent octenidine on non‐woven fabrics (NWs) is investigated. Non‐thermal plasma generated by atmospheric pressure diffuse coplanar surface barrier...

article

Glass bond adhesive strength improvement by DCSBD atmospheric-pressure plasma treatment

Andrej Buček, Antonín Brablec, Dušan Kováčik, Pavel Sťahel, more

International Journal of Adhesion and Adhesives > 2017 > 78 > C > 1-3

A novel type of dielectric barrier discharge, the so called Diffuse Coplanar Surface Barrier Discharge (DCSBD), has been used for the treatment of glass surfaces prior to their bonding with a UV-curing acrylate adhesive. The DCSBD is a source of diffuse, atmospheric-pressure “cold” plasma with power densities reaching ~ 100W/cm³ even in strong electronegative gases (e.g. pure oxygen) without any admixture...

article

Hydrophilization of outer and inner surfaces of Poly(vinyl chloride) tubes using surface dielectric barrier discharges generated in ambient air plasma

Oleksandr Galmiz, David Pavliňák, Miroslav Zemánek, Antonin Brablec, more

Plasma Processes and Polymers > 14 > 9 > n/a - n/a

An atmospheric pressure ambient air plasma technique is developed for technically simple treatment of inner and/or outer surfaces of plastic tubes and other hollow dielectric bodies. It is based on a specific type of surface dielectric barrier discharge generating visually diffuse plasma layers along the treated dielectric surfaces using water‐solution electrodes. In the present study, the technique...

article

Surface modification of natural leather using diffuse ambient air plasma

Vlasta Štěpánová, Jakub Kelar, Pavel Slavíček, Silvie Chlupová, more

International Journal of Adhesion and Adhesives > 2017 > 77 > C > 198-203

The aim of this work was to activate the surface of dyed natural leather using a diffuse ambient air plasma treatment. The plasma was generated by the so-called diffuse coplanar surface barrier discharge (DCSBD). It was observed that a 10s plasma treatment time is enough to decrease the water contact angle from 85° to 45°. Improvement of wettability is important for gluing of dyed leather and better...

article

Areal homogeneity verification of plasma generated by diffuse coplanar surface barrier discharge in ambient air at atmospheric pressure

Vlasta Stepanova, Jakub Kelar, Oleksandr Galmiz, Miroslav Zemanek, more

Contributions to Plasma Physics > 57 > 4 > 182 - 189

This paper deals with an optical emission spectroscopy study of a diffuse coplanar surface barrier discharge (DCSBD) in air at atmospheric pressure. The main aim of this study was to verify the areal homogeneity of the generated plasma, which is important for many applications like treatment of nonwoven fabrics, glass, metals, polymers, foils, and so on. Optical emission spectra of DCSBD plasma in...

article

Mass spectrometry of diffuse coplanar surface barrier discharge: influence of discharge frequency and oxygen content in N₂/O₂ mixture*

Jan Čech, Antonín Brablec, Mirko Černák, Nevena Puač, more

The European Physical Journal D > 2017 > 71 > 2 > 1-8

Diffuse Coplanar Surface Barrier Discharge (DCSBD) has been studied extensively for industrial applications in recent decade. So far, limited information was available on the production of ozone or nitrogen oxides important for industrial deployment of DCSBD. In this paper results of mass spectrometry of DCSBD performed at atmospheric pressure are presented. DCSBD mass spectra were studied for different...

article

Atmospheric pressure plasma etching of silicon dioxide using diffuse coplanar surface barrier discharge generated in pure hydrogen

Richard Krumpolec, Jan Čech, Jana Jurmanová, Pavol Ďurina, more

Surface and Coatings Technology > 2017 > 309 > C > 301-308

We report on the method of dry etching of silicon dioxide (SiO₂) layers by cold plasma treatment at atmospheric pressure in pure hydrogen using Diffuse Coplanar Surface Barrier Discharge (DCSBD). The SiO₂ etching rate was estimated at ~1nm/min. The studied plasma process was found to be the composition of plasma induced reduction and etching. The changes in surface morphology of etched samples were...

article

Reinigen, Funktionalisieren und Beschichten

Uwe Vohrer, Ralf Bosse, Tomáš Hoder, Mirko Černák, more

Vakuum in Forschung und Praxis > 28 > 5 > 26 - 32

Die Plasmatechnologie ist mit ihren unterschiedlichen Ausführungsformen, dem Niederdruck‐ oder dem Atmosphärendruckplasma, eine der bedeutendsten Technologien, um nahezu jede Materialoberfläche zu aktivieren, zu reinigen zu funktionalisieren oder zu beschichten. Dieser Artikel fokussiert auf die Atmosphärenplasmen und zeigt anhand von Beispielen auf, dass zunehmend bisherige Domänen der Niederdruckplasmabehandlung...

article

Plasma treatment of detonation and HPHT nanodiamonds in diffuse coplanar surface barrier discharge in H₂/N₂ flow

Vít Jirásek, Jan Čech, Halyna Kozak, Anna Artemenko, more

physica status solidi (a) > 213 > 10 > 2680 - 2686

Due to extraordinary properties and biocompatibility, diamond nanoparticles – nanodiamonds (NDs) are considered for various biomedical applications. Amongst other functional groups which may be grafted on the NDs surface, the amines (NH_x) are highly demanded linkers for biomolecules and dyes. In this regard, a non‐destructive, non‐hazardous and low‐cost method of NDs amination would further accelerate...

article

Atmospheric pressure plasma assisted calcination of organometallic fibers

Veronika Medvecká, Dušan Kováčik, Anna Zahoranová, Monika Stupavská, more

Materials Letters > 2016 > 162 > Complete > 79-82

Plasma assisted calcination of composite submicron fibers (Ce(NO₃)₃/polyvinylpyrrolidone) as a novel method for inorganic submicron fibers preparation was studied. Special type of dielectric barrier discharge, so called Diffuse Coplanar Surface Barrier Discharge (DCSBD) was used for the plasma treatment of composite fibers at atmospheric pressure in ambient air for the purpose of oxidation and removing...

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INFONA - science communication portal

Search results for: Mirko Černák

Large‐area open air plasma sources for roll‐to‐roll manufacture

Surface modification of clay‐coated paper by atmospheric‐pressure plasma in air

Optimization and influence of multi-hollow surface dielectric barrier discharge plasma operating conditions on the physical quality of peanut

The future for plasma science and technology

White paper on the future of plasma science for optics and glass

White paper on the future of plasma science and technology in plastics and textiles

Design and evaluation of plasma polymer deposition on hollow objects by electrical plasma generated from the liquid surface

Effect of Cold Atmospheric Pressure Plasma on Maize Seeds: Enhancement of Seedlings Growth and Surface Microorganisms Inactivation

Atmospheric pressure plasma treatment of agricultural seeds of cucumber (Cucumis sativus L.) and pepper (Capsicum annuum L.) with effect on reduction of diseases and germination improvement

Atmospheric pressure plasma assisted calcination by the preparation of TiO2 fibers in submicron scale

Ambient air plasma pre‐treatment of non‐woven fabrics for deposition of antibacterial poly (l‐lactide) nanoparticles

Glass bond adhesive strength improvement by DCSBD atmospheric-pressure plasma treatment

Hydrophilization of outer and inner surfaces of Poly(vinyl chloride) tubes using surface dielectric barrier discharges generated in ambient air plasma

Surface modification of natural leather using diffuse ambient air plasma

Areal homogeneity verification of plasma generated by diffuse coplanar surface barrier discharge in ambient air at atmospheric pressure

Mass spectrometry of diffuse coplanar surface barrier discharge: influence of discharge frequency and oxygen content in N₂/O₂ mixture*

Atmospheric pressure plasma etching of silicon dioxide using diffuse coplanar surface barrier discharge generated in pure hydrogen

Reinigen, Funktionalisieren und Beschichten

Plasma treatment of detonation and HPHT nanodiamonds in diffuse coplanar surface barrier discharge in H₂/N₂ flow

Atmospheric pressure plasma assisted calcination of organometallic fibers

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