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Application of metallic materials for selective growth
Němeček, Tomáš ; Rezek, Bohuslav (referee) ; Čechal, Jan (advisor)
The Si(100) surface and Ga surface phases up to 1 ML on their oxidation have been studied by XPS and LEED. The selective growth of Ga on the SiO2/Si structures fabricated by EBL has been analyzed using SEM and AFM methods. It was proved that Ga clusters grow in structures beside the oxide. The structure of alumina on Ni3Al(111) and NiAl(110) substrates was fully determined by combining the results of STM measurements and DFT simulations. It was determined the alumina/NiAl(110) does not form a suitable template for ordered Fe and Co clusters growth. However, the next research confirmed the alumina/Ni3Al(111) forms template appropriate to clusters growth purpose.
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Self-assembled molecular layers on epitaxial graphene
Kovařík, Štěpán ; Švec, Martin (referee) ; Čechal, Jan (advisor)
Samouspořádání organických molekul je spontánní proces tvorby nanostruktur, při kterém je výsledná struktura určena mezimolekulárními and molekulárně-substrátovými interakcemi. Pochopení principů samouspořádávání je klíčem k přípravě funkčních nanostruktur s atomární přesností. Tato diplomová práce se zaměřuje na přípravu a studium samouspořádaných molekulárních struktur 4,4’-diphenyl dikarboxylové kyseliny na povrchu grafenu připraveného na Ir(111). Pro studium vlastností molekulárních struktur je využito rastrovací tunelovací mikroskopie a nízkoenergiové elektronové mikroskopie. Tato kombinace umožňuje získat informace z oblastí o velikosti v řádu nanometrů až milimetrů. V práci je popsána molekulární strukuktura stabilní při pokojové teplotě. Vazebný motiv této struktury je dán interakcí karboxylových skupin sousedních molekul.
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System for Race Car Parameterization
Tiszai, Patrik ; Stančíková, Ivana (referee) ; Malinka, Kamil (advisor)
Cieľom práce je navrhnúť a implementovať aplikáciu na vytváranie konfigurácie správ a filtrov zariadení v CAN-bus zbernici pre školský vývjový tím TU Brno Racing. Aplikácia by mala predovšetkým zefektíniť a znížit chybovosť pri vytváraní nových konfigurácií. Pre úspešný vývoj, bola najskôr vykonaná analýza požiadaviek v spomínanom tíme a následný návrh a implementácia. Výsledkom je funkčná webová aplikácia, ktorá je otestovaná s ohľadom na použiteľnosť vytváranej konfigurácie a užívateľského rozhrania.
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Design and realization of data processing system from environmental sensors in IoT environment
Maraczek, Patrik ; Bastl, Michal (referee) ; Věchet, Stanislav (advisor)
The master’s thesis deal with design and realization of measuring station, which process data from environmental sensors in IoT environment. Thesis includes research of sensors, cloud services for IoT, microcontrollers and environmental data available online. Thesis contains detailed procedure for realization of designed system, including code description for microcontrollers STM32W55 and STM32 B-L475E-IOT01A2 Discovery kit, configuration of IBM Watson IoT Platform cloud service and procedure for correct programming of Node-RED application responsible for logic of whole system. Source code, which might be used for simple implementation of designed system, is attached to the master’s thesis.
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Design and optimization of piezoactuators
Jajtner, Jan ; Pavera, Michal (referee) ; Nováček, Zdeněk (advisor)
This bachelor’s thesis main concern is to develop and optimize a linear impact-drive piezoelectric actuator for scanning tunneling microscope working as vertical macroscopic manipulator of the conducting tip. UHV piezoelectric actuator issues are being discussed and analyzed on theoretical level in order to create adequate mathematical model. Based on expressed requirements a prototype is designed and measured, while seeking appropriate parameters of supply pulse and loading.
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Assembling and testing of low temperature STM microscope
Sojka, Antonín ; Páleníček, Michal (referee) ; Pavera, Michal (advisor)
This bachelor thesis addresses the problem of assebling the low temperature STM working in ultrahigh vacuum. The thesis deals with connecting the microscope and electronics. The desing of temperature stabilizers for fixing the low temperatures is described along with a construction of expanding the vacuum chamber to test STM in low temperatures. The thesis describes the construction of sample and tip holders to insert samples and tips into the STM. At the end there are brief instructions to use GXSM software and testing the microscope in atmospheric pressure.
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Examples in environment ARMmbed
Maraczek, Patrik ; Marada, Tomáš (referee) ; Zuth, Daniel (advisor)
The bachelor’s thesis contains basic information for working with microcontroller properly in ARMmbed integrated development environment. Thesis describe microcontroller, microchips, chip’s periphery, ARMmbed environment. Also manual is written for this environment. Four examples are solved at the end of thesis to explain how extended devices and sensors are working. Devices like 4-bit seven-segmented display, LED diodes, ultrasound sensor SRF02.
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Excitation and detection of plasmon polaritons
Brtek, Tomáš ; Kalousek, Radek (referee) ; Tomanec, Ondřej (advisor)
Behavior of surface plasmon polaritons and localized surface plasmons is strongly dependent on parametres of metalic surfaces and on parametres of structures created on the surfaces. This work deals with plasmonics mainly in the field of producing structures for plasmonics resonant systems, which might be suitable for excitation of surface plasmons by modified scanning tunneling microscopy. Final structures made for this purpose were described. Techniques for the excitation of plasmons are presented.
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