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Plasmon enhanced photoluminescence
Édes, Zoltán ; Kůsová,, Kateřina (referee) ; Šikola, Tomáš (advisor)
Diplomová práce se zabývá fotoluminiscencí polovodičových materiálů zesílené plazmonovými polaritony. Je popsána základní teorie interakce mezi lokalizovanými povrchovými plazmonovými polaritony a fotoluminiscenčními látkami. Dva mechanismy, které mohou vést k fotoluminiscenci zesílené plazmonovými polaritony jsou diskutovány. Následně je popsán návrh aparatury pro měření fotoluminiscence a způsob její realizace. Funkčnost aparatury je ověřena měřením fotoluminiscenčních spekter objemového GaN, nanokrystalického Si a CdTe kvantových teček. Nakonec je zkoumána metoda přípravy vzorků sestávajících z kovových nanokuliček a fotoluminiscenčně aktívních CdTe kvantových teček.
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Localized Surface Plasmons: Principles and Application
Kvapil, Michal ; Schmidt, Eduard (referee) ; Šikola, Tomáš (advisor)
The diploma thesis deals with plasmonic nanostructures for visible eventually near-infrared region of electromagnetic spectrum. At first, there are discussed basic terms which are necessary for description of plasmonic nanostructures and their properties. Then the resonant properties of gold nanoantennas on a fused silica substrate and in proximity of nanocrystalline diamond are addressed. FDTD simulations are used for an assesment of resonant properties and local electric field enhancement of these nanostructures. Possible manufacturing methods of the antennas and techniques for the measurement of their properties are mentioned at the end of the thesis.
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Excitation and Detection of Plasmon Polaritons
Šustr, Libor ; Schmidt, Eduard (referee) ; Kalousek, Radek (advisor)
The diploma thesis is aimed to excitation and detection of surface plasmon polaritons by visible light. First of all, we will briefly remind some basic principles like waves, electromagnetic wave, light on the interface and optical properties of metals. By using these principles we show presence of surface plasmon polaritons states. After the explanation of their properties there will be clearly visible reasons for aplications of the special excitationand detection methods. We will describe especially the prism coupling, periodic grating coupling and SNOM. Two last sections deal with computer simulations and experiments related to these methods. This means we can exemplify some knowledge presented in previous chapters. Results of simulations are compared with the experiment where we study the excitations of surface plasmon polaritons by periodic grating on aluminium surface.
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Plasmonic Resonant Antennas
Břínek, Lukáš ; Schmidt, Eduard (referee) ; Šikola, Tomáš (advisor)
Tato diplomová práce se zabývala plazmonickými anténami pro infračervenou oblast spektra elektromagnetického záření. K hledání zesílení pole bylo použito FDTD (Finite-Difference Time-Domain Method) simulací. Podle očekávání, byla shledána lineární závislost rezonanční vlnové délky na délce raménka platinové antény na křemíkovém povrchu. Diplomová práce se také zabývala výrobou antén pomocí fokusovaného iontového svazku (FIB) a následným měřením rezonančních vlastností pomocí mikroskopické metody FT-IR (Fourier Transform Infrared Spectroscopy). Posun rezonanční vlnové délky byla registrována pouze pro negativní antény. Nakonec se tato práce zabývala vysvětlením saturace křivky závislosti rezonanční vlnové délky na rozměru raménka platinové antény na substrátu ze SRONu (silicon-rich oxynitride).
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Optical properties of infrared plasmonic antennas fabricated by FIB technique
Biolek, Vladimír ; Dvořák, Petr (referee) ; Kvapil, Michal (advisor)
The bachelor thesis deals with plasmonic nanostructures for mid-infrared region of electromagnetic spectrum. In the first part, there are discussed theoretical description of electromagnetic field and description of properties of plasmonic nanostructures. Then the manufacturing methods of the plasmonic nanostructures for mid-infrared region of electromagnetic spectrum are discussed using focused ion beam, and measurement of these nanostructures are discussed using Fourier transform-infrared spectroscopy.
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SNOM probes with special properties
Slabý, Vít ; Kalousek, Radek (referee) ; Spousta, Jiří (advisor)
This bachelor thesis deals with scanning near-field optical microscopy. With SNOM we examined experimentally the near field of the interference of surface plasmon polaritons (PPP) on plasmonic structures consisting of slits in a metal layer a we discuss the effect of probe characteristics on the measurement results.Effect of few characteristics is simulated numerically. Findings obtained in the previous experiments are used for the construction designing of an experimental device called NanoGIS, which should serve for the nanostructure manufacturing.
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Detection of Localized Surface Plasmons on Metal Nanostructures
Konečná, Andrea ; Dub, Petr (referee) ; Kalousek, Radek (advisor)
This bachelor's thesis deals with theoretical and experimental study of localized surface plasmons excited on metal nanostructures. Analytical calculations were compared to simulations and measurements using assembled apparatus and Fourier-transform infrared spectroscopy (FT-IR) in infrared range. Obtained results were discussed considering both validity of performed approximations and quality of manufactured nanostructures.
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Study of Properties of Surface Plasmon Polariton by Using Scanning Near-Field Optical Microscopy
Neuman, Tomáš ; Kalousek, Radek (referee) ; Dvořák, Petr (advisor)
This bachelor`s thesis deals with the study of properties of surface plasmon polaritons (SPPs) propagating along the metal - dielectric interface. The interference of SPPs was experimentally examined by a scanning near-field optical microscope (SNOM) on plasmonic structures prepared by focused ion beam (FIB) etching. Interference patterns caused by SPPs propagating from prepared excitation slits were observed. Detected interference patterns were theoretically discussed. Finally, the sensitivity of the SPP coupling on the polarization of the excitation laser beam was experimentally confirmed.
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