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Liquid analysis sensor
Hanus, Martin ; Adámek, Martin (referee) ; Kosina, Petr (advisor)
This thesis deals with the mixing of liquids issues. The simulation of structure for mixing of liquids and evaluation of parametres which have most significant influence on mixing of liquids was made with help of COMSOL programm. In the next section of thesis the quality of electrodes used for cyclic voltammetry made on LTCC by thick layer technology was determined. In the end of this thesis the 3D structure for mixing of liquids was made. The quality of mixing was controlled by cyclic voltammetry.
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The remote control workplace of electrochemical sensors
Cieslar, Jakub ; Šteffan, Pavel (referee) ; Adámek, Martin (advisor)
This master’s thesis deals with the design of automated workplase for measurement with electrochemical sensors. Design and realization of a device, which communicates with computer and which can be controlled via WAN or LAN nets, are the main aims of this work. This thesis describes the process of designing, realization and optimalization of designed preparation adjustment. It also describes created software of a device, driver for service PC and programme of a web client.
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The system for measurement of little flow
Karásek, Eduard ; Prášek, Jan (referee) ; Adámek, Martin (advisor)
Diploma thesis solves how to create system for measurement of little liquid flows. The basic types of liquid flowmeter, which are possible used for measurement of little liquid flows, are described in the introduction part of thesis. The limit for little flow is often determined as flow 100 mg.min-1 and low. Second part of this thesis describes the ways of capillary production and practical experiments with them. Thesis is focused to thick film technology and LTCC technology. Next part of this work is solution of simple measuring unit for measurement of little flows less than 100 mg.min 1, which is controlled by microprocessor ATmega16. The measuring unit can be worked separately or can be connected to PC. The next possibility of flowmeter optimisation is summarized in end of thesis.
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Carbon nanotubes utilization for fabrication of thick-film sensors electrodes
Polický, Jiří ; Adámek, Martin (referee) ; Prášek, Jan (advisor)
This work covers an area of heavy metals detection by miniaturized thick film sensors. Working electrode of these sensors was fabricated using thick film paste that was prepared as a nanocomposition of carbon nanotubes powder, suitable vehicle and a thinner. The response of fabricated electrodes to cadmium and lead ions was measured using differential pulse voltammetry in an acetate buffer solution using a three electrode sytem. The results were compared with the carbon electrode made from special commercial thick film polymer paste. Finally the possibility of working electrode surface activation with nitric acid and heavy metals on real biological sample detection is described here.
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Electrochemical sensor array
Šulc, Jakub ; Prášek, Jan (referee) ; Adámek, Martin (advisor)
In recent years (Of late year)microelectronic technology significantly affected in the field of sensor technology, especially in the field of electrochemical sensors. This thesis deals with design and construction of thick-film voltammetric sensors array. The reason for proposal of voltammetric sensors array is to increase of speed, increase the accuracy and extension possibilities measurement compared with common systems.By reason of increase of sensitivity of these sensors it is efficient use the potentiostat chip for measurement output signal. Created sensors must fulfill the specified parameters and also requirements of thick-film technology. Next step is design the basic blocks of electronic circuit used to evaluate the measured values.
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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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The remote-control workplace of sensor technology
Knopp, Daniel ; Vaško, Cyril (referee) ; Adámek, Martin (advisor)
This thesis is focused on a specific virtual laboratory support, which is designed and created as a device capable of data transferring to display and/or computational unit via serial port. Both the device and common PC are generally a corner stone of each virtual laboratory, which can be also accessed via internet. Technique, significant factors with impact of analog disturbances on digital communication and realization of standalone virtual laboratory are described in detail.
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The lead detection in solders
Macháň, Ladislav ; Prášek, Jan (referee) ; Adámek, Martin (advisor)
This work deals with issues of lead detection in solder irons used in electrotechnics. The general aim is to study principles of quantitative heavy metal detection by the electrochemical methods, optimal method selection and construction of detecting instrument.
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The design of electrochemical sensor with integrated potentiostat chip
Uhlár, Martin ; Novotný, Marek (referee) ; Adámek, Martin (advisor)
The research on electrochemical sensor applications in combination with application-defined electronic circuits is a very fast developing field of modern sensorics. Device designing of unique integrated systems with specific properties and parameters is now becoming the everyday practice for producers of devices based on the latest technology progress in microelectronics. In the process of realization of a new device type, the main objective consists in increasing the possibility of detecting very low concentrations of heavy metals in the given chemical solution, extending the signal-to-noise ratio, and measuring the potential of a sensor. The general aim of this Master’s thesis is to design the topology of a sensor based on the thick film technology, to materialize the sensor, and to make experimental measurement using the sensor prototype. The practical reason for basing the measurement on the application of this thick film sensor is to find out whether the operational integration of the sensor and the circuit has been achieved according to the original hypothesis. Importantly, it is also necessary to determine whether the reproducibility of measured results has been reached. The innovative aspect of the created device consists in the improvement of output characteristics given by the integration of ASIC (IMAM CHIP). The integration of ASIC on the surface of the sensor eliminates the huge parasitic influence that affects the accuracy of measurement.
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