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Epitaxial growth of cobalt islands via oxide mediated epitaxy
Stará, Veronika ; Kolíbal, Miroslav (referee) ; Čechal, Jan (advisor)
This bachelor thesis deals with preparation, growth and analysis of cobalt thin films. The films are formed on silicon (111) samples covered with a thin layer of native oxide SiO2. Cobalt thin films were prepared using oxide mediated epitaxy method with the effusion cell as a source of cobalt atoms. Composition and morphology of the resulting Co system was studied as a function of the annealing temperature. Another goal of this research was to determine the dependence of the final island shape on the amount of deposited material and substrate orientation. The prepared structures were analyzed using X-ray photoelectron spectroscopy, atomic force microscopy and scanning electron microscopy. To determine the thickness of subsurface islands the samples were etched in buffered hydrofluoric acid and analyzed using above mentioned methods.
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Identification and authentication technologies
Miklánková, Zuzana ; Lieskovan, Tomáš (referee) ; Dzurenda, Petr (advisor)
The bachelor thesis deals with the analysis of currently available RFID technologies and smart cards. Summarized are types of identification and authentication radio or contact systems. The practical part compares measured RFID functional outputs and describes the implementation of multi-attribute authentication system using RFID technology and smart cards. For example, the authentication system can provide employees with access to the building, necessarily demonstrated by both the smart card and RFID tags.The system also includes user privacy elements, where identity of the user cannot be detected by captured communication.
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Property record based on RFID technology
Černý, Jakub ; Dydowicz,, Petr (referee) ; Kříž, Jiří (advisor)
This bachelor work focuses on the study of the modern technology of RFID tags and its application at Faculty of Business and Management in Brno. The main subject of this work is to use this technology as a replacement of barcode technology with the intention of raising processing speed, effectiveness and protection against stealing.
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Network with capacitor microphone using FM modulation
Lapáček, Petr ; Říha, Kamil (referee) ; Káňa, Ladislav (advisor)
In bachelor's thesis I was interested in quality of the electrostatic transducer. I have described a theoretic pieces of knowledges in parts of FM modulations and the variables crystals oscillators. I have tried to propose a conception of the condenser mikrophone in the high-frequency circuit where one of the main part was the crystal oscillator, which part was the capacitor transducer, in capacity element representative uncertain capacities. By this way I have tried to create the modulator, whose modulation depend on the actual changes of capacities in the electrostatic changers. Finally I have interested in the demodulation in this way of creating the HF signal by the help of detection unit TDA7000 and likewise setup of integrated circuit.
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Measurement of HRV and consideration of physical load
Vyskočilová, Martina ; Kolář, Radim (referee) ; Janoušek, Oto (advisor)
This work examines the influence of load on heart rate variability, and a description of the mechanisms influencing changes in heart rate, response to load. There is a review of methods used to assess heart rate variability. In another part the data of the measurement are processed and described the proposed method using spectral power, generated by the algorithm description, presentation of results.
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Identification and authentication technologies
Miklánková, Zuzana ; Lieskovan, Tomáš (referee) ; Dzurenda, Petr (advisor)
The bachelor thesis deals with the analysis of currently available RFID technologies and smart cards. Summarized are types of identification and authentication radio or contact systems. The practical part compares measured RFID functional outputs and describes the implementation of multi-attribute authentication system using RFID technology and smart cards. For example, the authentication system can provide employees with access to the building, necessarily demonstrated by both the smart card and RFID tags.The system also includes user privacy elements, where identity of the user cannot be detected by captured communication.
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The Importance Of Specifying Rr Interval
Normalization Method
Milek, Jakub
The main objective of this article is to bring attention to RR intervals resampling. Many researchers dealing with HRV problematic neglect to mention which algorithm they are using in their research. Some of the commonly used methods are presented here and how an algorithm choice can affect final results of HRV spectral analysis is shown. Power spectrum for each method was computed and power of commonly used measures (HF & LF) is presented in table to highlight the possible differences.
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Measurement of HRV and consideration of physical load
Vyskočilová, Martina ; Kolář, Radim (referee) ; Janoušek, Oto (advisor)
This work examines the influence of load on heart rate variability, and a description of the mechanisms influencing changes in heart rate, response to load. There is a review of methods used to assess heart rate variability. In another part the data of the measurement are processed and described the proposed method using spectral power, generated by the algorithm description, presentation of results.
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Epitaxial growth of cobalt islands via oxide mediated epitaxy
Stará, Veronika ; Kolíbal, Miroslav (referee) ; Čechal, Jan (advisor)
This bachelor thesis deals with preparation, growth and analysis of cobalt thin films. The films are formed on silicon (111) samples covered with a thin layer of native oxide SiO2. Cobalt thin films were prepared using oxide mediated epitaxy method with the effusion cell as a source of cobalt atoms. Composition and morphology of the resulting Co system was studied as a function of the annealing temperature. Another goal of this research was to determine the dependence of the final island shape on the amount of deposited material and substrate orientation. The prepared structures were analyzed using X-ray photoelectron spectroscopy, atomic force microscopy and scanning electron microscopy. To determine the thickness of subsurface islands the samples were etched in buffered hydrofluoric acid and analyzed using above mentioned methods.
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