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THIN LUBRICANT FILMS STUDY USING SPECTROSCOPIC REFLECTOMETRY
Čudek, Vladimír ; Dzimko, Marián (referee) ; Navrátil, Karel (referee) ; Dobeš, Petr (referee) ; Křupka, Ivan (advisor)
ectroscopic reflectometry is measurement technique that enables the study of the thickness and refractive index of thin layers. This thesis deals with its use for the study of lubrication films within EHD contact and verifies a new approach suggested in recent publications. It is focused on the development of an optical arrangement and mathematical model for the lubrication film thickness measurement within the entire EHD contact. This technique brings the possibility to study the pressure distribution within the contact area through the evaluation of changes in lubricant refractive index.
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Ellipsometry of Thin Films
Novotný, Zbyněk ; Navrátil, Karel (referee) ; Nebojsa, Alois (advisor)
Diploma thesis deals with ageing process of thin films of Co and Cu on Si substrate, prepared by the IBAD method. The process of film ageing, which depends on time of exposition to the atmosphere at room conditions, was investigated with spectroscopic ellipsometry (VIS+UV) and atomic force microscopy. In case of thin Co films, approximately four days long incubation period was observed. During this time period, a change in the optical parameters of the film occurs without a measurable change of the film topography. Using non-contact atomic force microscopy, a growth of the transitional film in the island growth regime was observed. During the ageing of thin Cu films, two stages of growth of the transitional layer were observed - nucleation stage and growth stage. Both of these time periods of the transitional layer growth show direct logarithmic dependence. Using non-contact atomic force microscopy, the growth of the transitional film was observed. Using atomic force microscopy in non-contact regime, time dependent measurement was done and the process of forming of one monolayer of the transitional layer was documented. Within the diploma thesis, a series of experiments on ultra high vacuum system were performed in order to investigate phase transformation of thin Fe films (22 monolayers) on Cu(100) stabilized by CO absorption. The transformation from fcc phase to bcc phase was induced by Ar+ ion beam bombardment with the ion energy in the range (0.5-4) keV. The process of phase transformation was observed by surface magneto-optic Kerr effect, Auger electron spectroscopy and low energy electron diffraction.
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Measurement of thin films properties by imaging spectroscopy and magnetooptical Kerr effect
Plšek, Radek ; Navrátil, Karel (referee) ; Spousta, Jiří (advisor)
This thesis is divided into three main sections that deal with optical and magnetic thin films properties and their measurements techniques. Principles of the spectroscopic reflectometry and measurements of optical properties are described in the first part. Results of imaging reflectometry are most important. This technique is based on in situ monitoring of optical properties of SiO2 thin films during etching over the area cca 10 × 13 mm2. In next section magnetic properties of thin films and new apparatus built on the Institute of Physical Engineering of BUT are shown. Magnetic properties were observed by longitudinal magneto-optical Kerr effect. The construction of the device is based on a light beam with rectilinear polarization reflected from magnetic material with turned polarization. For investigation of local magnetic properties of microstructures a microscope objective focusing laser beam on the sample is used. The last part of the thesis is aimed on improving of a spin valve structure Co/Cu/NiFe. This work was done within the frame of the Erasmus project in Laboratoire Louis Néel in Grenoble. The goal was to achieve the value of GMR (Giant Magnetoresistance) as high as possible by changing of deposition parameters. This value describes the rate of resistances in different mutual directions of magnetization in trilayers.
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Selected parts of the Construction-technology Project for construction of Administration and Flat Buildings complex Sochorova
Dvořák, Marian ; Navrátil, Karel (referee) ; Motyčka, Vít (advisor)
Masters thesis is engaged of chosen parts of technological-buildig project of administrativ and housing complex of Sochorova in Brno, Žabovřesky. Contains technological-buildig study of first phase with brief description of advancement of construction with grafical scripts of particular steps, timetable and pecuniarytable of objects AB3, AB4, diagrams with various possibilities of using operatives. Thesis continous with calculation of entire first phase and item budged of object AB3(draft construction), statement of masurement, technical report of construction-technological AB3, plan of situaction of the building, technological manual of reiforced concrete ceiling of AB3 including plan of planking parts PERI, timetable, design of construction site equipment with technical report, proposal of machineries and crane, plane of inspections for chosen items, ecology and report about safety and health protecting on construction site.
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The Building of the Research Center in Brno - Preparation of Building Process
Dvorník, Pavel ; Navrátil, Karel (referee) ; Motyčka, Vít (advisor)
The purpose of the bachelor thesis is to develop selected parts of technologically-building project of the Masaryk university´s campus in Brno, Hall A29. The building will be used as a research establishment. It has eleven building sites and the main one is tackled in detail. The bachelor thesis includes a technical report about the technologically-building project, the time schedule, suggestion of the realization of the main stages of its construction, including recommendation of the major building machines. The bachelor thesis also includes the project of site equipment, technological regulations for carrying out the pilotage, the check and test plan, the plan of safety and health protection during work, the budget of fabric and specialization in the field of building construction.
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Capacity extension of nursery school Slavkov u Brna - construction technology project
Durčák, Petr ; Navrátil, Karel (referee) ; Biely, Boris (advisor)
The object of diploma thesis is a construction technology project capacity extension of nursery school Zvidalek in Slavkov u Brna. Work includes facilities of building site, technological rule of waterproofing, schedule, item budget, plan of checks and tests, design of machinery, safety and health at work and economic, time and transport evaluation of two versions of ceiling construction.
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Construction of school Rajhrad – construction and technological preparation
Kijonka, Jakub ; Navrátil, Karel (referee) ; Biely, Boris (advisor)
Subject of this master thesis is the structural and technological background for the construction of high school in Rajhrad. This consists of time and finanical plans, technological instructions for the reinforced concrete monolithic skeleton, time schedule, item budget, construction site layout, machinery configuration , audit and evaluation plans, work place safety protocols, environmental plan of the construction site.
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Construction and technological project of reconstruction of the Pavilion "A" the hospital Havlíčkův Brod
Klofáč, Radek ; Navrátil, Karel (referee) ; Novotný, Michal (advisor)
The main construction work is subject to technological reconstruction project Pavilion "A" hospital Havlickuv Brod. On this subject will be processed the necessary documents for construction preparation of the construction. For the reconstruction of this object will be processed: Time and financial plan of the building, building a detailed schedule SO01 (technological normals), the balance of the major sources for the construction, inspection and test plan for the reconstruction ceilings, technological prescription for reconstruction ceilings, reconstruction basement, thermal technical assessment of perimeter constructions
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Futurama Business Park - object C, technological preparation of construction
Okrouhlý, Petr ; Navrátil, Karel (referee) ; Biely, Boris (advisor)
The subject of the thesis is the solution of technological preparation of new building construction Futurama Business Park - the object C. In this thesis, is solved by the implementation of earthwork, foundation structures and reinforced concrete monolithic skeleton. Establishment of the building will be made on the concrete foundation slab. The building is designed as a reinforced concrete frame with perimeter steel columns and glass façade. The work also includes a timetable and financial plan (budget) building, technological regulations, technical report of building equipment, mechanical design assembly, inspection and test plan, design of site facilities, safety plan, impact of technological stage on the environment.
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Hotel in Čeladná - Construction technological project
Janek, Stanislav ; Navrátil, Karel (referee) ; Novotný, Michal (advisor)
This thesis is focused on the developing of the implementation phase of the Hotel MIURA in the village of Čeladná. The project is describing particular stages of technological realization of this construction, technology, implementation of the main subject of hydro-insulation system, including design control and test plan for its implementation, design and description of site equipment, the draft contract for realization. The work is further supplemented by an objects schedule and detailing schedule of the main hotel building, a description of major equipment and materials used, budget for the main calculations of the object and other objects.
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