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Non conventional applications of HIC´s
Klíma, Martin ; Jankovský, Jaroslav (referee) ; Szendiuch, Ivan (advisor)
This thesis deals with non-conventional applications in the area of thick film technology, especially with indication of the temperature by thermodynamic sensors. The work summarizes thermodynamic sensors theory and also contains production data of the universal thermodynamic sensor realized on ceramic substrate, including measurement of its parameters and heat radiation.
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Capacitive sensor in low temperature co-fired Ceramic
Symerský, Tomáš ; Řezníček, Michal (referee) ; Kosina, Petr (advisor)
This bachelor thesis deals with theoretical knowledge of basic materials especially of a low-temperature ceramics, which enables creating multi-layer structures. Different defects occur by forming these structures, especially in the area of cavernas and micro-tubules. This thesis uses different methods which lead to an elimination of these defects. The thesis also deals with techniques which can be used to a realization of these sensors. Achieved knowledge helped to draft and realize the capacity sensor of flow and pressure in a low-temperature ceramics. The pressure sensor was tested by the load in the frequency spectrum, while the flow sensor was tested for different substances.
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Electrochemical sensor for ascorbic acid detection
Hlavička, Michal ; Kynclová, Hana (referee) ; Majzlíková, Petra (advisor)
This work deals with electrochemical detection of ascorbic acid using screen-printed three-electrode sensors. The work is divided into three parts, where the first describes the theory of thick-film technology, including the types and compositions of the pastes, fabrication and firing. The second part deals with the methods, measurement principles and the electrochemical detection of ascorbic acid. Experiments were done using screen-printed carbon electrodes in a solution of phosphate buffer and ascorbic acid. In conclusion the results are evaluated.
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Design of an electrochemical sensor for ethanol measurement
Božek, Jakub ; Jankovský, Jaroslav (referee) ; Otáhal, Alexandr (advisor)
This bachelor thesis deals with printed electrochemical sensors and the measurement of glucose and ethanol in blood solution. The theoretical part describes the sensors, their distribution and applications. Then the thesis focuses in detail on electrochemical sensors, measurements and their electrodes. Then, in the practical part, the sensor designs, fabrication of the sensors and the measurements made are presented.
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Prediction of resistivity for thick film rezistor
Kolařík, Jaroslav ; Otáhal, Alexandr (referee) ; Skácel, Josef (advisor)
This work deals with issue the thick-film technology. Especially this work focuses on trimming value of resistance thick-film resistors. First part is dedicated to create the thick-film and thick-film resistors, trim technology and trim cuts. Next part is design of thick-film resistor and test substrate with resistors. The following is a description of the production the test substrate. Next part thesis deals with practical creation cuts into thick-film resistors by AUREL ALS300. The following is an experimental part dealing with the simulation of thick-film resistor with different trim cuts in the ANSYS Workbench. The last part is for practical verification of simulations measurement by the FLIR SC660 thermovision camera. At the end are evaluated knowledge of the properties of the trim cuts.
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Electrochemical sensor for ascorbic acid detection
Hlavička, Michal ; Kynclová, Hana (referee) ; Majzlíková, Petra (advisor)
This work deals with electrochemical detection of ascorbic acid using screen-printed three-electrode sensors. The work is divided into three parts, where the first describes the theory of thick-film technology, including the types and compositions of the pastes, fabrication and firing. The second part deals with the methods, measurement principles and the electrochemical detection of ascorbic acid. Experiments were done using screen-printed carbon electrodes in a solution of phosphate buffer and ascorbic acid. In conclusion the results are evaluated.
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The influence of a pre-print thick layer paste viscosity on forming of layer
Ondráček, Michal ; Švecová, Olga (referee) ; Klíma, Martin (advisor)
This bachelor thesis deals with the theory of thick film technology and applying these layers. The work also includes basics of liquid rheology, methods of measurement viscosity and ways of mixing liquids. The main aim is to determine the influence of viscosity of thick film pastes for printing quality of the test structure using screen printing, in particular its flatness and sharpness. The aim is also measure the dependence of viscosity thick film pastes on mixing time.
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Electrical properties of thick film pastes measured in a wide temperature range
Gajdoš, Jiří ; Jankovský, Jaroslav (referee) ; Řezníček, Michal (advisor)
The aim of this master’s thesis is to investigate the electrical properties of various thick-film resistor pastes in a wider temperature range. The thesis mainly focuses on a change in electrical resistance depending on temperatures, which extend to the cryogenic region. To achieve this, there is an overview of the thick-film technology properties, major technological procedures, principles of resistive pastes conductivity, methods of electrical resistance measuring, possible errors in measurement and methods of their minimization. The content of this work is also familiar with the characteristics of a cryogenic station, on this foundation was proposed the measurement procedure and created thick-film circuits for this station. After measurement in the interval 10 K to 350 K, there are subsequently evaluated the data and explains the principles of the conductivity of used pastes.
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The pressure measuring using LTCC technology
Straka, Michal ; Řezníček, Michal (referee) ; Kosina, Petr (advisor)
This thesis deals with the problems of the pressure sensor made on a low temperature co-fired ceramics. The pressure sensor converts the measured physical quantity to the electrical signal. The strain-gauge, capacitive and optical sensors are used for scanning of the pressure. It is possible to construct the multilayer sensors with holes and cutouts, through the use of the 3D structure on LTCC sensors. The passive parts can be applied on this layer through the thin-layer or thick-layer technology, which creates conductible paths and contacts for parts and outlets. In the practical part of the work, a few construction types of pressure sensors are designed, implemented and measured. Emphasis is given to strain-gauge strip sensor and possible problems during its manufacture, lamination and deformation of burn-out.
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