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Strong Coupling in Plasmonic Structurers
Gryga, Michal ; Brzobohatý, Oto (referee) ; Šikola, Tomáš (advisor)
This diploma thesis deals with numerical simulations of the optical response of plasmonic infrared antennas placed on silicon substrates with thin film of silicon dioxide and subsequently with fitting of scattering spectra by model of coupled harmonic oscillators. In this work, we study an influence of length of antennas on the strength of coupling of localized surface plasmons in the antennas with phonons in silicon dioxide film. Also, the influence of silicon dioxide film thickness on this coupling is investigated.
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Transport Properties of Graphene Layers during Their Transfer
Gryga, Michal ; Lišková, Zuzana (referee) ; Procházka, Pavel (advisor)
This bachelor thesis is focused on the measurement of the transport properties of graphene, which was produced by chemical vapor deposition (CVD) method on a copper foil and subsequently transferred onto a silicon substrate covered by 280 nm of silicon dioxide. In this work we studied an influence of different types of copper etchants and influence of plasma cleaning of silicon substrates prior to the graphene deposition.
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Hybrid plasmonic waveguides
Kulič, Martin ; Gryga, Michal (referee) ; Kvapil, Michal (advisor)
Optical waveguides have been used for information transfer for many years. Their use in modern applications is however severely limited by the diffraction limit. Plasmonic waveguides, on the other hand, offer significant miniaturisation at the cost of large attentuation. Hybrid plasmonic waveguides offer a solution benefitting from both of these approaches, i.e. significant miniaturisation with fairly large propagation lengths. These structures have not been studied enough for their widespread use yet. This thesis focuses on current applications of hybrid waveguides and outlines the analytical a numerical methods of their study. The second part of this thesis is aimed at simulation and optimization of selected geometries with regards to propagation length and mode area. The influence of basic dimensions and material selection is studied. Detailed optimization of these structure allows their widespread use in modern scientific and technological applications.
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Strong Coupling in Plasmonic Structurers
Gryga, Michal ; Brzobohatý, Oto (referee) ; Šikola, Tomáš (advisor)
This diploma thesis deals with numerical simulations of the optical response of plasmonic infrared antennas placed on silicon substrates with thin film of silicon dioxide and subsequently with fitting of scattering spectra by model of coupled harmonic oscillators. In this work, we study an influence of length of antennas on the strength of coupling of localized surface plasmons in the antennas with phonons in silicon dioxide film. Also, the influence of silicon dioxide film thickness on this coupling is investigated.
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Transport Properties of Graphene Layers during Their Transfer
Gryga, Michal ; Lišková, Zuzana (referee) ; Procházka, Pavel (advisor)
This bachelor thesis is focused on the measurement of the transport properties of graphene, which was produced by chemical vapor deposition (CVD) method on a copper foil and subsequently transferred onto a silicon substrate covered by 280 nm of silicon dioxide. In this work we studied an influence of different types of copper etchants and influence of plasma cleaning of silicon substrates prior to the graphene deposition.
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