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Chemical analysis of a-CSi:H and a-CSiO:H films
Olivová, Lucie ; Franta, Daniel (referee) ; Čech, Vladimír (advisor)
Plasma-enhanced chemical vapor deposition is a promising technology for the preparation of materials in the form of thin films with controlled physical-chemical properties, which can be affected by changing input precursors or deposition conditions as needed. In this thesis, plasma nanotechnology was used to synthesize thin films on silicon wafers. Tetravinylsilane was chosen as a precursor for the synthesis of the films. In addition to pure tetravinylsilane, mixtures of tetravinylsilane with argon and mixtures of tetravinylsilane with oxygen were also used as input precursors for film deposition, in different proportions of the individual component in the deposition mixture. Using chemical analyses, specifically infrared spectroscopy, photoelectron spectroscopy and selected ion techniques, the chemical structure of the prepared films was examined in detail and the dependence of this structure on deposition conditions and input precursors was studied. This thesis confirms, that by changing effective power supplied to the plasma discharge and selecting different input precursors, it is possible to control chemical structure, and thus the properties of the prepared nanolayers.
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Chemical structure of silicon-based thin films
Olivová, Lucie ; Franta, Daniel (referee) ; Čech, Vladimír (advisor)
This bachelor thesis deals with the characterization and preparation of thin polymer films deposited on silicon wafers by plasma-enhanced chemical vapour deposition. The main part of the work is background research in the field of plasma polymerization and infrared spectroscopy. Thin polymer films based on tetravinylsilane and tetravinylsilane with the addition of mixed gas (argon) were prepared in the experimental part. The prepared thin films of plasma polymers were characterized by the selected spectroscopic technique - infrared spectroscopy. Based on the evaluation of transmission infrared spectra, the chemical structure of the deposited polymer films was determined. The determined chemical structures of the prepared films were observed with respect to the deposition conditions and hence the possibility to prepare tailored films for a variety of applications.
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Chemical analysis of a-CSi:H and a-CSiO:H films
Olivová, Lucie ; Franta, Daniel (referee) ; Čech, Vladimír (advisor)
Plasma-enhanced chemical vapor deposition is a promising technology for the preparation of materials in the form of thin films with controlled physical-chemical properties, which can be affected by changing input precursors or deposition conditions as needed. In this thesis, plasma nanotechnology was used to synthesize thin films on silicon wafers. Tetravinylsilane was chosen as a precursor for the synthesis of the films. In addition to pure tetravinylsilane, mixtures of tetravinylsilane with argon and mixtures of tetravinylsilane with oxygen were also used as input precursors for film deposition, in different proportions of the individual component in the deposition mixture. Using chemical analyses, specifically infrared spectroscopy, photoelectron spectroscopy and selected ion techniques, the chemical structure of the prepared films was examined in detail and the dependence of this structure on deposition conditions and input precursors was studied. This thesis confirms, that by changing effective power supplied to the plasma discharge and selecting different input precursors, it is possible to control chemical structure, and thus the properties of the prepared nanolayers.
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Chemical structure of silicon-based thin films
Olivová, Lucie ; Franta, Daniel (referee) ; Čech, Vladimír (advisor)
This bachelor thesis deals with the characterization and preparation of thin polymer films deposited on silicon wafers by plasma-enhanced chemical vapour deposition. The main part of the work is background research in the field of plasma polymerization and infrared spectroscopy. Thin polymer films based on tetravinylsilane and tetravinylsilane with the addition of mixed gas (argon) were prepared in the experimental part. The prepared thin films of plasma polymers were characterized by the selected spectroscopic technique - infrared spectroscopy. Based on the evaluation of transmission infrared spectra, the chemical structure of the deposited polymer films was determined. The determined chemical structures of the prepared films were observed with respect to the deposition conditions and hence the possibility to prepare tailored films for a variety of applications.
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The phonological dialectal elements of the Southwest Bohemian Dialectal subgroup´s Western part on the example of the municipality Poleň´s (in Klatovy district) inhabitants´s language
FRANTA, David
The aim of the study is the analysis of the rural language of the inhabitants, born in the 1920´s to the 1960´s, of the municipality Poleň (villages Poleň, Poleňka, Zdeslav) in Klatovy district.This dialectal material was collected on the basis of author´s body of work. This included elements such as audio-recordings of speeches, oral history and of the responses to the survey conducted by the author. Its questions were concentrated on the phonological traits of the Southwest Bohemian dialectal subgroup. Taking into account the Jaroslav Voráč´s pieces of dialectal work, the dialectal elements were structured to the vowel and consonant system and differentiated to the categories reflected the Czech language´s historical development. This study focused with respect to equalizing phonic tendencies different of the contemporary Czech language standard. The individual dialectal traits´ frequency was measured by means of the tables and their state was evaluated. The research found out the some dialectal elements´ active knowledge in the responder´s language, but their total decrease compared with the analogous researches from the 1950´s. From a linguistic perspective, it is possible to conclude that the researched localities fall into the wider area of the Southwest Bohemian dialectal subgroup´s western part. Furthermore, this view takes into consideration the negligible influence of the dialectal micro-region with the centre in Domažlice.
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The national revivalist enlightened by romantism?
FRANTA, David
The aim of the study is the analysis and the interpretation of three different texts (occasional poetry, heroic epic and a record of dream), which hade taken a form in the late 1820? and in the course of 1830?, by Josef Franta Šumavský (1796-1857). The interest of the literary criticism concentrates on expressing markers of the literary discourses (the tendencies of the enlightement, romanticism and biedermeier) in all of these texts to decode the idea of these texts, on the intertextuality of iconography and poetics and also on their total historical context. On these texts, still ignored by literary criticism, it was able to describe the art syncretism of the Czech National Movement (Revival) and characterize the literary production of this time in its genesis thanks to the method inspired by new historicism, Peter Zajac?s and Dalibor Tureček?s pulse theory and Vladimír Macura?s semiotics. In the apendix, the list of the Franta?s literary and scientific works in the book, journal and hand-written form is attached.
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Deposition and Characerization of Protective DLC Coatings on Viscoelastic Substrates
Buršíková, V. ; Bochníček, Z. ; Franta, D. ; Sťahel, P. ; Kelar, L. ; Buršík, Jiří ; Klapetek, P. ; Bláhová, O. ; Peřina, Vratislav ; Zemek, J. ; Zajíčková, L.
Deposition and characerization of protective DLC Coatings on viscoelastic substrates.
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