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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Reactor for the preparation of nanoparticles in plasma discharge
 Brožek, Vlastimil ; Benešová, L. ; Mastný, L. ; Sýkora, V.
New variety of a plasmachemical reactor for the preparation of nanoparticles from liquid or aerosol precursors in which liquid precursors were brought into the current of plasma in the places where the temperature reached 4000K–5000K was reconstructed. As a generator of plasma was used the plasma torch WSP® which was developed and patented by IPP AS CR. We worked on liquid precursors which were H[AuCl4],AgNO3 and H2[PtCl6],that decomposed in the high temperature environment and so colloidal solutions of metallic nanoparticles of gold, silver and platinum were emerged in concentration of 5mg/l–50mg/l with the size of particles 25nm–100nm depending on the starting point of the precursor concentration. Further experiments for preparation so-called double oxides served us as a check of universality of this method but also its wide adaptability.That was the preparation of spinel MgAl2O4 and ferrite CoFe2O4 from the sulfate solutions.By the horizontal device arrangement it is possible to
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Depozice a charakterizace nanostrukturních diamantů podobných uhlíkových vrstev obsahujících oxid křemíku
 Buršíková, V. ; Zajíčková, L. ; Franta, D. ; Janča, J. ; Buršík, Jiří ; Klapetek, P. ; Bláhová, O. ; Peřina, V. ; Navrátil, V.
The aim present work was to deposit and study nanostructured diamond-like carbon coatings with silicon-oxide content on different substrate materials.The variation in SiOx content enabled to minimize the intrinsic compressive stress in coatings.The influence of the coating/substrate interface properties on the results of the indentation tests and its dependence on the coating thickness was studied.Complex analysis of the maesured coating/substrate response was done and the existing models for substrate influence were tested.
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