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Application of metal and semiconductor nanostructures for biodetection
Kejík, Lukáš ; Skládal, Petr (referee) ; Kolíbal, Miroslav (advisor)
The master’s thesis deals with two applications of gold discoidal nanostructures exhibiting plasmon resonance for biodetection. The first approach considers the detection of changes in the phase on plasmonic antennas using coherence-controlled holography microscope. It was found that the steepness of the phase is increasing with the illumination wavelength when plasmon resonance is excited in larger antennas. The sensitivity of the phase to refractive-index changes of the surrounding media was observed when the largest response was given by antennas in resonance with wavelength of illumination. Next part deals with plasmon resonance detection by means of optical spectroscopy combined with voltametry which characterizes the electrochemical activity. Changes in resonance wavelength induced by the presence of SSC buffer were observed, although this influence seems to diminish in time. Conducted experiments have also shown that oxygen-plasma cleaning is not suitable for sample surface cleaning because of oxidation of metals including gold as well.
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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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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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Application of metal and semiconductor nanostructures for biodetection
Kejík, Lukáš ; Skládal, Petr (referee) ; Kolíbal, Miroslav (advisor)
The master’s thesis deals with two applications of gold discoidal nanostructures exhibiting plasmon resonance for biodetection. The first approach considers the detection of changes in the phase on plasmonic antennas using coherence-controlled holography microscope. It was found that the steepness of the phase is increasing with the illumination wavelength when plasmon resonance is excited in larger antennas. The sensitivity of the phase to refractive-index changes of the surrounding media was observed when the largest response was given by antennas in resonance with wavelength of illumination. Next part deals with plasmon resonance detection by means of optical spectroscopy combined with voltametry which characterizes the electrochemical activity. Changes in resonance wavelength induced by the presence of SSC buffer were observed, although this influence seems to diminish in time. Conducted experiments have also shown that oxygen-plasma cleaning is not suitable for sample surface cleaning because of oxidation of metals including gold as well.
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