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Study of velocities of nanoparticles produced by means gas aggregation source
Škorvánková, Kateřina ; Solař, Pavel (advisor) ; Nikitin, Daniil (referee)
A mechanical time-of-flight filter designed for measuring velocities of nanoparticles produced by gas aggregation source has been developed. The emphasis is placed on the resolution and accuracy maximization as well as on simplicity of use. It is shown that the experimentally measured data (influenced by the design of the filtr) may be converted to the real velocity distribution and a method of conversion is presented. Subsequently, the filter is used to measure velocities of nanoparticles produced under various experimental conditions and the dependence of the velocity on given conditions is shown. Furthermore, a sample for every experimental setup has been prepared for SEM analysis to determine size distribution of the nanoparticles. Finally, the size dependence of velocity is illustrated.
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Nanostructured films based on plasma polymers
Solař, Pavel
In this thesis we have studied growth and properties of thin films prepared by tilted deposition using sputtering. The construction of low pressure magnetron is presented. The influence of deposition conditions on formation of columnar structure using scanning electron microscope was studied. Formation of columnar structures of metals, composites metal-plasma polymer and plasma polymer is described. The influence of deposition conditions on surface roughness obtained by AFM is discussed. Chemical structure of composite and plasma polymer films has been determined using XPS and infrared spectroscopy.
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Preparation of nanostructured and nanocomposite thin films with plasma polymer matrix
Solař, Pavel ; Biederman, Hynek (advisor) ; Novák, Rudolf (referee) ; Tichý, Milan (referee)
Title: Preparation of nanostructured and nanocomposite thin films with plasma polymer matrix Author: Pavel Solař Department: Department of Macromolecular Physics, MFF, UK Supervisor of the doctoral thesis Prof. RNDr. Hynek Biederman, DrSc., Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University in Prague Abstract: This thesis is devoted to study of nanostructured thin films implementing metal and plasma polymer particles and columns. Process of formation of particles from various materials has been studied. The particles size, shape and chemical composition has been characterized relative to the deposition conditions. Transport of metal and plasma polymer particles inside the particle source and from the particle source to substrate has been investigated. The particles were used in composite films especially to produce films with controlled roughness e.g. for investigation of influence of roughness on adhesion of cells. Preparation of columnar films by Glancing Angle Deposition has been studied and the particles have been used as seeds for the columnar growth. Keywords: Nanoparticles, Glancing Angle Deposition, plasma polymer, composite thin film
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Nanostructured films based on plasma polymers
Solař, Pavel
In this thesis we have studied growth and properties of thin films prepared by tilted deposition using sputtering. The construction of low pressure magnetron is presented. The influence of deposition conditions on formation of columnar structure using scanning electron microscope was studied. Formation of columnar structures of metals, composites metal-plasma polymer and plasma polymer is described. The influence of deposition conditions on surface roughness obtained by AFM is discussed. Chemical structure of composite and plasma polymer films has been determined using XPS and infrared spectroscopy.
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Nanostructured films based on plasma polymers
Solař, Pavel ; Shukurov, Andrey (advisor) ; Vyskočil, Jiří (referee)
In this thesis we have studied growth and properties of thin films prepared by tilted deposition using sputtering. The construction of low pressure magnetron is presented. The influence of deposition conditions on formation of columnar structure using scanning electron microscope was studied. Formation of columnar structures of metals, composites metal-plasma polymer and plasma polymer is described. The influence of deposition conditions on surface roughness obtained by AFM is discussed. Chemical structure of composite and plasma polymer films has been determined using XPS and infrared spectroscopy.
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New Versions of Classical Automata and Grammars
Soukup, Ondřej ; Solár, Peter (referee) ; Meduna, Alexandr (advisor)
Tato diplomová práce se zabývá zkoumáním nových verzí automatů a gramatik a je proto rozdělena do dvou částí. První část definuje a studuje čisté více zásobníkové automaty a navíc zavádí úplná uspořádání nad jejich zásobníky nebo zásobníkovými symboly. Práce dokazuje, že zavedená omezení snižují vyjadřovací sílu automatů. Ve druhé části práce jsou definovány a popsány nové derivační módy gramatik s rozptýleným kontextem, které zobecňují relaci přímé derivace. Je dokázáno, že jejich použití nesnižuje vyjadřovací sílu gramatik.
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Systems of Sequential Grammars Applied to Parsing
Repík, Tomáš ; Solár, Peter (referee) ; Meduna, Alexandr (advisor)
This thesis examines Grammar systems as the potentially more powerful tool for parsing as the simple grammars. The intention is to adapt theoretical models of grammar systems for parsing. New methods are introduced, with focus on determinism in order to prevent backtracking during parsing. The basis for the parser is a cooperating distributed grammar system. The implementation uses predictive, top-down parsing method, LL(1)Tables, and recursion as well. The parser is universal, usable for any LL-Grammar and for any grammar system based on them.
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Parsing Based on Matrix Grammars
Bednář, Petr ; Solár, Peter (referee) ; Meduna, Alexandr (advisor)
This thesis is researching parsing based on matrix grammars. Introduces automata controled parsing method. It discusses problems of deterministic parsing of matrix grammars. Thesis is focusing on deterministic parsing of non-deterministic languages. It studies strength of this deterministic method.
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