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Technological challenges in the fabrication of MoS.sub.2./sub./diamond heterostructures
Varga, Marián ; Sojková, M. ; Hrdá, J. ; Hutar, P. ; Parsa Saeb, S. ; Vanko, G. ; Pribusova Slusna, L. ; Ondič, Lukáš ; Fait, Jan ; Kromka, Alexander ; Hulman, M.
Nowadays, 2D materials are one of the most studied classes of materials. In addition to the most famous graphene, progress has been achieved in studying and using fundamental properties of transition metal dichalcogenides (TMD). Complementary, diamond as a representative of 3D materials has gained a reputation as an extremely versatile material due to its extraordinary combination of physical/chemical/electrical/optical properties. Besides these particular forms of 2D and 3D materials, their heterostructures have become very attractive due to new phenomena and functions (bandgap engineering, enhanced charge transport, optical interaction, etc.). However, individual technological procedures are still minimally investigated and described. Here, we will demonstrate a proof-of-concept for the preparation of MoS2/diamond heterostructures, where two different strategies were employed: a) growth of MoS2 layers on diamond films, and b) growth of diamond films on Si/MoS2 substrates.
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Enhanced growth rate of diamond films at low temperature in focused microwave plasma system
Babčenko, Oleg ; Bydžovská, Irena ; Fait, Jan ; Shagieva, Ekaterina ; Ondič, Lukáš ; Kromka, Alexander
The low temperature (< 500 °C) diamond film deposition on fused silica in two different focused microwave plasma systems, i.e. a multimode clamshell cavity (MCC) and a rotational ellipsoid cavity (REC) reactor, was investigated. During the experiments, the methane to hydrogen ratio, in the hydrogen-rich process gas mixture, varied from 1 % to 15 % for MCC and from 1 % to 9 % for REC. The grown films were analyzed by scanning electron microscopy and Raman shift measurements. The outcomes of the study and enhanced diamond growth at low temperatures is advantageous for overcoating of fused silica as well as thermally sensitive substrates, e.g. optical elements, photonic crystals, sensors, etc.
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Analýza činností a výkonů Českých aerolinií, a.s.
Fait, Jan ; Eisler, Jan (vedoucí práce) ; Zelený, Lubomír (oponent)
Bakalářská práce se zabývá popisem a analýzou vývoje ve společnosti České aerolinie a.s. v letech 2003 -- 2007, kterou dává do kontextu s mezinárodní situací v civilním obchodním letectví. Práce je tematicky rozčleněna do jednotlivých kapitol, kde je postupně probírána organizační struktura, lidské zdroje, letadlový park, obchodní strategie, nebo doplňkové podnikatelské činnosti společnosti. Na závěr je proveden rozbor za pomoci relevantních ukazatelů z finanční analýzy a ukazatelů používaných pouze v dopravním sektoru či obchodním letectví. V přílohách k práci lze najít kompletní rozvahu, výkaz zisků a ztrát a výkaz cash flow za roky 2003 -- 2007.
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