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The multimedia textbook of microelectronic technologies
Černík, Pavel ; Klíma, Martin (referee) ; Adámek, Martin (advisor)
In this bachelor's thesis, there is summary of technological process used in the manufacture of microelectronic circuits. For easier understanding of the processes, there are appended videos, animations and pictures of these technologies. Textbook is created as web pages, that are dynamicaly generated from data stored in MySQL database according to predefined HTML template. Articles and pictures can be added using simple administrative interface.
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Optimization of thick-film electrochemical sensor's electrode system
Cupal, Miroslav ; Adámek, Martin (referee) ; Prášek, Jan (advisor)
Master’s thesis deals with thick/film sensor’s electrodes optimization. The aim of this work is to determine how the geometric size and shape of the electrodes affect the output current response. Technology and electro-analytical method is described in the theoretical part. The practical part is aimed at thick-films electrodes and sensors optimalization. It is here each optimization TLV electrodes in terms of their impact on the size of the output current response three-electrode electrochemical system using standard electrodes. Similarly, there is a study of the effect size performed on one common electrode free-electrodes sensor. Finally, there are studied various forms of electrode area three-electrode thick-film sensor in terms of their effect on the output current response. Summarized results are described in the final part of the work.
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Hot plate with power regulation
Lacika, Marek ; Skácel, Josef (referee) ; Búran, Martin (advisor)
This thesis deals with issues of used hot plates and thick-film technology. The theoretical part of diploma thesis contains a theoretical analysis and description of corresponding technology and usage of materials. The practical part of the thesis focuses on the design of the resulting device, which forms design of the test and optimized hot element, the initial design of the device and the design of models for temperature simulations. Then follows description of the practical realization of the motifs and testing of the created thick-film structure on a ceramic substrate. In the last part are shown simulations of heat transfer in the proposed model of the device.
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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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Thick-film sensors for electrochemical detection of species in aqueous solutions
Martynek, Daniel ; Adámek, Martin (referee) ; Prášek, Jan (advisor)
This work deals with the theory, principles and characteristics of electrochemical sensors, thick-film technology and electrodes used in electrochemistry. Methods for the detection of substances matters in solutions are discussed here. Main emphasis is given to differential pulse voltammetry and the influence of the method setup parameters to the measurement results. Experimentally, the work deals with the modification of thick-film working electrode with carbon nanotubes and subsequent activation of the electrode by nitric acid to increase the detection limit and the current response to selected heavy metals ions. Finally, the obtained results are compared with special commercial paste and discussed with the data state in literature.
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Electrical properties of thick-film resistive pastes
Gajdoš, Jiří ; Buršík, Martin (referee) ; Řezníček, Michal (advisor)
This work deals with the technology of thick-film electronic circuits, describes the materials used for the implementation of a thick-film circuit and basic operations for their production. The content is also a proposal resistive pattern, which allows measurement of thick-film resistive inks. The practical part describes the creation of resistive pattern, creating measuring station, measurement of values of resistors, measurement temperature coefficient of resistance TCR and interpretation of evaluation.
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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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Thick-film amperometric sensor array
Růžička, Tomáš ; Prášek, Jan (referee) ; Adámek, Martin (advisor)
Supposed work deals with proposal and construction of thick-film amperometric sensor array. The reason of this proposal of sensor array is multiple increase of speed, increase of accuracy and enlargement of possibilities of measuring against current optical system. In theoretic part there is described method of seriography and electrochemical analytic method for determination of chemical elements in the solution. Practical part is composed of proposal of topology of electrochemical sensor electrodes, their comparison according to characteristics and subsequently of the proposal of sensor array. For testing of function of sensor array measuring by method of cyclical voltametry was done with the help of default electrochemical oxidative-reducing pair of potassium ferro-ferricyanide.
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Design of a thick-film temperature sensor array
Fojtík, Marek ; Skácel, Josef (referee) ; Otáhal, Alexandr (advisor)
The aim of the bachelor thesis is to study the issue of measuring temperature sensor arrays and then use the knowledge for design of a temperature sensor array. This thesis is divided into theoretical part and practical part. In the theoretical part of the thesis the aim is to obtain information about the types of temperature sensors implemented in the thick-film technology, categorization of cermet materials for temperature sensors by their accuracy and possible uses in different applications. In the practical part of the thesis, the array of temperature sensors was designed in topology of matrix. The design was customized to the requirements of cermet materials in order to achieve the required accuracy. Subsequently, the design was realized through the thick film technology. Suitable measurement methodology was proposed for the array of temperature sensors. Measurement of this field was made.
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