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Design of Artificial Muscle for Robotics Area
Závodný, Tomáš ; Kočiš, Petr (referee) ; Knoflíček, Radek (advisor)
The diploma thesis is structured with regard to the design and use of artificial muscle in robotics. The thesis starts with a theoretical section where different types of artificial muscles are described with their advantages and disadvantages. After considering all the types of described muscles, one species was selected for further processing. Vacuum-controlled origami muscles were chosen for use in a small manipulation device. After the design of the whole machine, the risk analysis and the economic evaluation of the whole design were carried out.
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Conceptual design of a precision manipulator
Stuchlík, Petr ; Pavlík, Jan (referee) ; Vetiška, Jan (advisor)
This diploma thesis deals with the problems of analysis and the subsequent design of a precision manipulator used as a microscope table. The first part od the final thesis deals with the problems associated with the movement of the test sample within the electron microscope. Subsequently, possiblle design variants were proposed, further developing the next steps fot the correctness and functionality of manipulator. The individual force loads of the components were calculated. The result of the work was constructed as a CAD model with subsequent transfer to the assembly drawing.
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Transitional motion analysis of the optically trapped particle in under-damped regime
Sűsserová, Martina ; Damková, Jana (referee) ; Harabiš, Vratislav (advisor)
This bachelor thesis deals with the analysis of the transition phenomenon, which occurs when the nanoparticles enter the laser beam. Thereafter the particle is anchored around the point of focus of this beam. The main objectives of the thesis were to illustrate the dependence of the trajectory positions in relation to its instantaneous values and to obtain the parameters of the attenuated harmonic oscillator whose character is characteristic for the particle inserting the beam. Another objective of the thesis was to apply frequency filters to signal data and to observe their effects on phase diagrams and also to visualize the behavior of the particle in the vicinity of the focus in the stationary state.
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Investigation of high voltage influence on different materials in high and low vacuum
Šedivý, Matúš ; Šandera, Josef (referee) ; Hejátková, Edita (advisor)
The beginning of this thesis contains an overview of properties of the insulators, and description of insulators that were used for in depth research of surface breakdown in vacuum. Furthermore, this work focuses on mechanisms of an electric breakdown initiation at the interface of the solid insulator and surrounding low pressure gas. Multiple methods for measurements of dielectric strength are examined. The experimental part describes the measurements performed in the vacuum chamber. The results of these measurements are then analysed. In conclusion, used insulators are compared and suggestions for further work are given.
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Implementace vypařovacího systému pro depozice tenkých vrstev
CIFREUND, David
This thesis focuses on gas dispensing for PECVD proceses in low temperature plasma. Key to succesful depositions is an accurate and stable flow rate of precursor to reactor, where discharges are used for depositions of thin films. Liquid can be also an admixture of the precursor, but it has to be mixed with the carrier gas and finaly evaporated. For this purpose was chosen CEM evaporating system from Bronkhorst High-Tech B.V., which is composed of gas mass flow controller, liquid mass flow controller, evaporating device and control unit. Main goal of this thesis is to implement evaporating system to plasma chemical reactor, calibrate it and do measuring tests.
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Drying of moist materials at low temperatures
Gregor, Jakub ; Neuberger, Pavel (advisor) ; Adamovský, Radomír (referee)
The aim of this work was to develop a literature review on the issue of drying moist materials at low temperatures. The first part is devoted to an overview of drying theory, distribution and classification of dryers and a brief analysis of the most common of them. There is also addressed the issue of the effect of temperature on the dried material and the nature of low-temperature drying.
The second part of the research is concerned with the broadest current method of drying at a low temperature, which is called lyophilisation. There is mentioned principle of the method, the process of drying, processing equipment, methods and examples of activities and overview of key manufacturers.
The third part is devoted to other drying techniques that can be used for effective drying at low temperature and their comparison.
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Special technical solutions in vacuum technology
SZABÓ, Robin
This thesis is focussed on the realisation of various technical solutions for microwave plasma apparatus. The theoretical part focuses on vacuum and general terms that are related. Attention was paid for example to definition of pressure, to pressure and central free track, units of measurement of pressure and their conversions. This part includes the classification of vacuum according to pressure. The next section of the dissertation is concerned with achieving vacuum including a description of rotary oil and turbo molecular pump. Part of the thesis includesa description of plasma microwave apparatus CX22 which was used during realisation of this dissertation. There is also a description of vacuum chamber, gas pump system, system of gas lead, microwave source, evaporator of liquid precursor and mixing apparatus. In the practical section a measurement of physical and technological quantity included. This part covers the inflow of apparatus measurement and temperatures of substrate during plasma process. In the next part there is a description of specific technical solutions suggested by the dissertation author. Amongst suggested technical solutions in this paper there is vacuum isolator, heating system of evaporator pipe, box of an evaporator of liquid precursor, ''gas ring'' and tablet equipment. Vacuum isolator was designed by 3D simulation and serves as a connection to detection technology. Heating of pipes of an evaporator were constructed to improve quality of the plasma process. The box of an evaporator was suggested for maintaining fresh air in a lab. A Gas ring was also designed by 3D simulation and serves as a specially adjusted pipe for bringing vapour of precursor near the substrate. The tablet equipment was constructed for unified preparation of compressed powder cellulosic tablets. Also from the available vacuum pumps, multilevel pumping was constructed that helped achievement of reduced lowest pressure.
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