Zobrazeno 1 - 10
of 536
pro vyhledávání: '"Jaroslav Kováč"'
Autor:
Erika Dutková, Jaroslav Kováč, Jiří Hejtmánek, Petr Levinský, Adelia Kashimbetova, María Jesús Sayagués, Martin Fabián, Zdenka Lukáčová Bujňáková, Matej Baláž, Katarína Gáborová, Viktor Puchý, Ladislav Čelko
Publikováno v:
Micro, Vol 3, Iss 2, Pp 458-470 (2023)
In this study, we report the optoelectric and thermoelectric properties of famatinite Cu3SbS4 that was mechanochemically synthesized in a planetary mill from powder elements for 120 min in an inert atmosphere. The tetragonal famatinite Cu3SbS4 was na
Externí odkaz:
https://doaj.org/article/94e487aa03824f31be848db5b68342c5
Autor:
Erika Dutkova, Matej Baláž, Jaroslav Kováč, Nina Daneu, Adelia Kashimbetova, Jaroslav Briančin, Soňa Kováčová, Ladislav Čelko
Publikováno v:
Crystals, Vol 14, Iss 4, p 324 (2024)
In this work, a nanocomposite consisting of ternary chalcogenide CuInS2 and TiO2 was prepared and its optical and optoelectrical properties were investigated. The CuInS2/TiO2 nanocomposite was produced via one-step mechanochemical synthesis and chara
Externí odkaz:
https://doaj.org/article/4c152e4de0644687928f3b4d0bdc0235
Publikováno v:
Crystals, Vol 13, Iss 3, p 487 (2023)
Ternary wittichenite Cu3BiS3 nanocrystals were prepared mechanochemically using a planetary ball mill from elemental copper, bismuth and sulfur in a stoichiometric ratio in only 5 min. The orthorhombic wittichenite Cu3BiS3 was nanocrystalline with an
Externí odkaz:
https://doaj.org/article/08e93b322d7b4fcf9633a783edf700da
Autor:
Erika Dutková, María Jesús Sayagués, Martin Fabián, Matej Baláž, Jaroslav Kováč, Jaroslav Kováč Junior, Martin Stahorský, Marcela Achimovičová, Zdenka Lukáčová Bujňáková
Publikováno v:
Molecules, Vol 28, Iss 1, p 326 (2022)
Copper, antimony and sulfur in elemental form were applied for one-pot solid-state mechanochemical synthesis of skinnerite (Cu3SbS3) in a laboratory mill and an industrial mill. This synthesis was completed after 30 min of milling in the laboratory m
Externí odkaz:
https://doaj.org/article/6b0ac46ad4c14c5aba62df34d13c08b0
Publikováno v:
Photonics, Vol 10, Iss 1, p 78 (2023)
The plasmonic resonance frequency of metal nanoparticles (NPs) strongly depend on the geometry, size, and separation between NPs. Here, a plasmonic structure is designed based on a film-coupled nanoparticle phenomenon and analytically investigated by
Externí odkaz:
https://doaj.org/article/8f92076890b647ee9cd86822f6efc86e
Autor:
Wojciech Dawidowski, Beata Ściana, Katarzyna Bielak, Miroslav Mikolášek, Jakub Drobný, Jarosław Serafińczuk, Iván Lombardero, Damian Radziewicz, Wojciech Kijaszek, Arpád Kósa, Martin Florovič, Jaroslav Kováč, Carlos Algora, L’ubica Stuchlíková
Publikováno v:
Energies, Vol 14, Iss 15, p 4651 (2021)
Basic knowledge about the factors and mechanisms affecting the performance of solar cells and their identification is essential when thinking of future improvements to the device. Within this paper, we investigated the current transport mechanism in
Externí odkaz:
https://doaj.org/article/06e1e7a0993d420c91dd2629b10bae39
Autor:
Peter Baláž, Matej Baláž, María J. Sayagués, Ivan Škorvánek, Anna Zorkovská, Erika Dutková, Jaroslav Briančin, Jaroslav Kováč, Yaroslav Shpotyuk
Publikováno v:
Nanoscale Research Letters, Vol 12, Iss 1, Pp 1-10 (2017)
Abstract In this study, we demonstrate a one-pot mechanochemical synthesis of the nanocomposite composed of stannite Cu2FeSnS4 and rhodostannite Cu2FeSn3S8 nanocrystals using a planetary ball mill and elemental precursors (Cu, Fe, Sn, S). By this app
Externí odkaz:
https://doaj.org/article/15ca30dfa53d4eff80d3aba3af8dbc18
Autor:
Erika Dutková, Zdenka Lukáčová Bujňáková, Oleh Sphotyuk, Jana Jakubíková, Danka Cholujová, Viera Šišková, Nina Daneu, Matej Baláž, Jaroslav Kováč, Jaroslav Briančin, Pavlo Demchenko
Publikováno v:
Nanomaterials, Vol 11, Iss 1, p 69 (2020)
The CuInSe2/ZnS multiparticulate nanocomposites were first synthesized employing two-step mechanochemical synthesis. In the first step, tetragonal CuInSe2 crystals prepared from copper, indium and selenium precursors were co-milled with zinc acetate
Externí odkaz:
https://doaj.org/article/e423f8e804304f00bad4a3ae6a1af800
Autor:
Erika Dutková, Nina Daneu, Zdenka Lukáčová Bujňáková, Matej Baláž, Jaroslav Kováč, Peter Baláž
Publikováno v:
Molecules, Vol 24, Iss 6, p 1031 (2019)
In this study, CuInS2/ZnS nanocrystals were synthesized by a two-step mechanochemical synthesis for the first time. In the first step, tetragonal CuInS2 was prepared from copper, indium and sulphur precursors. The obtained CuInS2 was further co-mille
Externí odkaz:
https://doaj.org/article/226de822dbea4fab9f2d3553642dae52
Publikováno v:
Acta Montanistica Slovaca, Vol 16, Iss 2, Pp 149-153 (2011)
In this work mechanical activation of realgar As4S4 was studied. The addition of sodium chloride NaCl as a solid diluent intothe milling process substantially improved solid state properties of the obtained fines. However, the polymorphous transforma
Externí odkaz:
https://doaj.org/article/af6f28b0169b47eda131a43062fd4c91