ŠEDIVÝ, M. Realizace víceúčelového měřícího systému pro (sub)terahertzovou elektronovou spinovou rezonanční spektroskopii [online]. Brno: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. 2024.
Overall evaluation of the doctoral thesis and study period of the doctoral student: Ing. Matúš Šedivý has carried out his Ph.D. research at Dept. of Microelectronics of FEEC and mostly at CEITEC BUT in the EPR Spectroscopy Laboratory of the Magneto-Optical and THz Spectroscopy RG under my guidance and two supervising specialists doc. Petr Neugebauer and Dr. Oleksii Laguta, from September 2017 to April 2024. During the study, Matúš has worked in the team of the EPR Spectroscopy Lab and shared on the design, construction, and verification of the unique scientific equipment in the field of ultra-high frequency electron paramagnetic resonance. His special effort was focused to a software solution developed in LabVIEW for this home-built High-Frequency Electron Paramagnetic Resonance (HF-EPR) spectrometer. He applied a modular approach to control the spectrometer subsystems and simplify the adaptation to hardware changes during the development. His solution implements measuring procedures for conventional Continuous Wave EPR (CW-EPR), Frequency-Swept EPR (FS-EPR), and Two-Dimensional EPR (2D-EPR) mapping, which are relevant in different cases. Matúš has tested the software's automation capabilities in several trial measurements to obtain CW-EPR spectra of Silicon Carbide doped by vanadium (SiC + V) at various temperatures and microwave frequencies, multi-frequency spectra via 2D-EPR mapping, and dense FS-EPR data of a lithium phthalocyanine crystal rotated in a magnetic field. The spectrometer and the software are currently deployed and utilized in the Laboratory of EPR Spectroscopy at Central European Institute of Technology (CEITEC) in Brno, and data obtained by it has been already used in a number of publications. Also, Matúš has successfully completed all the required coursework for his Ph.D. and cleared the state doctoral exam in 2022. Notably, he has published his significant outcomes in four research papers in impacted journals (in one being the first author) and presented research results at various international conferences. In addition to his research contributions, Matúš has been actively engaged in educational endeavours at the Dept. of Microelectronics. He also co-supervised diploma thesis of Jan Dubský focused on low energy excitations in oriented graphite by THz magneto-optical spectroscopy. Based on my evaluation, Matúš Šedivý fulfills all the requirements expected of a Ph.D. candidate. Consequently, I highly recommend his dissertation for oral defence.
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