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Local characterization of electronic devices
Müller, Pavel ; Škarvada, Pavel (referee) ; Tománek, Pavel (advisor)
The development of micro and nanoelectronics and nanophotonics needs novel characterization techniques to ensure higher quality of designed devices. The thesis describes a use of Scanning Near-field Optical Microscopy (SNOM) in dimensional control and in local investigation of diverse physical parameters. As example of its potential, the correlation between object topography and reflection measurement of capacitors is shown.
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Reconstruction of Data from Damaged CD/DVD
Jarolím, Jordán ; Zbořil, František (referee) ; Drahanský, Martin (advisor)
This bachelor thesis deals with the reconstruction of data from a damaged CD/DVD. The aim is to create an application which will be able to get a bitstream from an image (scanned fragments of a disc) acquired by an optical or electron microscope. This thesis also examines a data representation on the disc, process of preparation of specimens of CD and DVD and scanning of these specimens. The algorithm of the created software, its testing and results are described in this thesis as well.
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Use of water jet technology in a company
Faltus, Tomáš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This thesis focuses on water jet technology. In the theoretical part of the thesis, the principle and classification of this technology, the quality of the cut surfaces after water jet cutting, the types of bevels, and the equipment needed for this technology are described and analyzed. It also describes the use of an abrasive water jet in machining and summarizes the advantages and disadvantages of this technology. Additionally, the thesis presents the machinery of the company with which the author of the diploma thesis worked, as well as its production range. The practical part of the work is devoted to the experiment, which consists in selecting a component for the production of samples using two abrasive nozzles, with subsequent assessment of the quality of the machined surfaces in relation to the size of the diameter of the abrasive nozzles as well as in relation to the materials and their thickness. Two materials of two different thicknesses were used for the samples. The quality of the machined surfaces was measured using two roughness meters. The average arithmetic deviation of the profile Ra and the largest height of the profile Rz were measured. At the end of the thesis, the deflection of the beam is measured using a microscope, and the consumption and the price of the abrasive for individual sample components were also calculated.
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Research-like education in primary schools
Svátková, Barbora ; Vančata, Václav (advisor) ; Skýbová, Jana (referee)
In this thesis, we assume a pan-European issue of the decline of interest in science and science education. In connection with this issue we conducted a literature search. We have also mapped the literature related to the issue of education research in the Czech Republic and the rest of the world. In an effort to increase pupils' interest, increase enthusiasm for science, we deal with activation teaching methods that compare with frontal teaching. As a motivational method we chose a research method of teaching. We prepared a lesson, which we tested among pupils of secondary school. In this work we watched 16 hours in 6 classes. Those lectures were inquiry and frontal way led. The results are presented in the practical part of this thesis. During lectures we wanted to stimulate students' interest in science and science research. Keywords academic instruction, frontal teaching, science education, cooperation, sensors Pasco, microscope, pupil, elementary school, Key Competencies
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Testing the influence of newly created learning materials for the fluorescent microscope on students` knowledge
Filipová, Jana ; Janštová, Vanda (advisor) ; Mourek, Jan (referee)
Among students, interest in Science is decreasing, despite the fact that knowledge of Science can be useful in many real life situations, such as medicine, conservation etc. Science education can also simply help to form a positive attitude towards nature. There are many possibilities of increasing students' interest in Science that could increase their motivation to study. Apart from Inquiry Based Education or Prescribed Practical Activities, working with devices used in research practice is one of the possibilities. If a school doesn't own such devices, there is a possibility to borrow them, or to work with them via the Internet. Possibilities of remote access to these devices are subject to research abroad, and this trend is also starting to appear in the Czech Republic. One example of a device that can be borrowed by schools is a fluorescence microscope at the Department of Didactics and Education of Biology, Faculty of Science, Charles University in Prague. In my thesis, I was investigating the influence of the presence or absence of this fluorescence microscope on the knowledge of students. Research was carried out in four different classes at two secondary schools in Prague. Students who took part in this research were from the first year of a four year secondary school or from the third...
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Design of manipulator of the sample for CCHM microscope
Špaček, Matěj ; Brada, Michal (referee) ; Dostál, Zbyněk (advisor)
In the Laboratory of the Experimental Biophotonics at Brno University of Technology, a new generation of the Coherence-Controlled Holographic Microscope (CCHM) is being developed. Because of the automation of certain microscope procedures, a fully motorized three axis computer controlled manipulator of the sample is to be employed. A fast and accurate lateral positioning in a range of several centimeters is required. For the focusing capability, very precise positioning in the optical axes is required as well. Initially, the basics of microscope manipulator design are presented. Then, commercially available solutions are introduced and compared with special focus on its possible implementation in the new generation of CCHM. However, due to the specific design of the new CCHM, available manipulators are not suitable. Therefore, a new optimized manipulator design is introduced in the second part of the thesis. A selection of its appropriate elements, especially actuators, is based on a review. For the new manipulator design, a technical documentation was made and a testing software was developed. A crucial part of the manipulator was assembled and tested.
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Measurement of the properties of cells grown in hydrogel
Belák, Daniel ; Janoušek, Oto (referee) ; Čmiel, Vratislav (advisor)
Main subject of this work is to present the possibilities of cultivation of cells in cultivation medium – hydrogel. Topic of the following part is introduction to the problematics of processing of the pictures made by light field microscopy and fluorescence microscopy. It studies the influence of parametres used in the process of stacking the pictures to reach the highest depth of field as possible. Last part is dedicated to measurement of the properties of cell cultures, its statistical processing and analysis.
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Microscopic Practice for Elementary School
Švajcrová, Lenka ; Dvořáková, Radka (advisor) ; Poupová, Jana (referee)
The main aim of my thesis was to come up with a manual for microscopic practices for elementary school's biology classes that are useful and easy to understand. The practices were drawn from ordinary textbooks (such as Fortuna, Fraus, Jinan, Natura, Nová Škola, Prodos, Scientia, SPN) that are often used for teaching pupils from 6th to 9th grade of elementary school. I also added interesting facts and practices which were drawn from the internet. I also focused on the pupil's attitude to microscoping using special questionnaires. Pupils wrote that their relationship with microscoping is positive and it helps them to understand the biology curriculum more. Furthermore, I gained information about the frequency that they practice microscoping at school. Although there are not enough biology lessons overall, I find out that most teachers usually manage to practice microscoping in class once every two weeks. In the theoretical part of the thesis, I focused on the structure of the optical microscope, which is used in classes and on the making of a temporary and permanent preparation. I also clarified the importance of microscoping practices and the pupil's opinions about it. Lastly, I added an overview of biology textbooks used in primary schools and grammar schools. Keywords: microscope, laboratory...
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Measure the impact of wireless technologies on TEM
Prokop, Martin ; Čudek, Pavel (referee) ; Polsterová, Helena (advisor)
The purpose of this diploma thesis is to research and compare available wireless communication technologies (frequency, modulation type, transmission speed and consumption). Describe transmission electron microscopes theory and deduce the most sensitive microscope parts to high frequency distortion. Investigate effect of wireless technology on CE standards and come up with, perform and evaluate the influence measurement of chosen technologies on base parameters of transmission electron microscope.
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Využití metalografie ve strojírenství
Nejedlý, Tomáš
This thesis focuses on practical use of metallography in machine engineering. First part devotes to the technical material characteristics, their chemical composition and its application in machine engineering. This chapter also includes the issue of internal defects and practical demonstrations of internal microstructure. The following section describes the metallographic samples preparation. Phases are sorted chronologically according to their nature and technological process. Significant part of this chapter focuses on the final procedures of metallographic samples treatment, namely the polishing and etching. Major impact on phase structures image quality is the proper chemical composition of the etchant. Final part of the thesis describes the principle and nature of the light and electron microscopy. Based on the approach of image analysis the macroscopic but also lattice defects can be determined considering the selected magnification.
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