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Nanostructures and Nanosensors
Křečková, Jitka ; Haupt, Jaromír (referee) ; Ellederová, Eva (advisor)
Cílem této bakalářské práce je představit využití nanotechnologie ve snímacích zařízeních, poskytnout základní informace o nanotechnologii, včetně popisu a klasifikace nanostruktur, a zdůraznit možnost vylepšení výkonu senzoru prostřednictvím nanotechnologie. Tato práce se také zabývá využitím nanodrátu jako součástí senzoru s konfigurací unipolárního tranzistoru. Kvantové tečky a jejich využití v optické detekci jsou také zahrnuty v této práci. Výhody i současná omezení nanosenzorů jsou shrnuty v závěru práce.
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Molecular Communication in Nano-networks Utilizing Diffusion Process
Kupka, Lukáš ; Mašek, Pavel (referee) ; Hošek, Jiří (advisor)
The bachelor thesis is focused on theoretical desription of diffusion-based molecular communication in nanonetworks, description of simulation framework N3Sim and building a model of nanocommunication in this simulator. Second part of thesis is focused on molecular communication based on electromagnetic waves. In this case simulator NS-3 and Nano-Sim module has been used. Practical part contains detail analysis of simulators adjustment and results of simulations. Simulations are performed with different settings in several scenarios. Their comparison and results is summarized in conclusion.
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Novel approaches to chemical modification of diamond surface
Bartoň, Jan ; Cígler, Petr (advisor) ; Řezanka, Pavel (referee) ; Stehlík, Štěpán (referee)
1 Abstract Diamond is a unique material for its physical and chemical stability. However, many advance applications rely on surface functionalisation. Here, two types of diamond were modified on the surface - thin layer of chemical vapor deposition (CVD) and nanodiamond particles (NDs) high pressure and high temperature (HPHT). The aim of CVD surface modification was to prepare photosensitised, conductive, diamond electrodes for dye sensitized solar cells (DSSC). For this purpose, a thin diamond layer doped with boron was deposited on the silicon wafer. Boron doping provided p-type (semi)conductivity to diamonds. The surface of the diamond was hydrogenated with H-plasma, and a short carbon linker with a protected amino group was UV-photografted to the surface. In another study, a photoconverting dye (P1) was covalently attached to the amine-linker. Furthermore, a dye designed based on donor-π-acceptor (D-π-A) concepts was attached to the surface. Finally, a systematic study was done for differently conductive diamond layer and the underlying silicon wafer These experiments gradually lead to the highest ever reported photocurrents of 6.6 µA cm2 for a flat photosensitised boron-doped-diamond (BDD) electrode. Monomolecular layer surface functionalizations on CVD diamond are difficult to detect or even quantify...
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Nanostructures and Nanosensors
Křečková, Jitka ; Haupt, Jaromír (referee) ; Ellederová, Eva (advisor)
Cílem této bakalářské práce je představit využití nanotechnologie ve snímacích zařízeních, poskytnout základní informace o nanotechnologii, včetně popisu a klasifikace nanostruktur, a zdůraznit možnost vylepšení výkonu senzoru prostřednictvím nanotechnologie. Tato práce se také zabývá využitím nanodrátu jako součástí senzoru s konfigurací unipolárního tranzistoru. Kvantové tečky a jejich využití v optické detekci jsou také zahrnuty v této práci. Výhody i současná omezení nanosenzorů jsou shrnuty v závěru práce.
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Molecular Communication in Nano-networks Utilizing Diffusion Process
Kupka, Lukáš ; Mašek, Pavel (referee) ; Hošek, Jiří (advisor)
The bachelor thesis is focused on theoretical desription of diffusion-based molecular communication in nanonetworks, description of simulation framework N3Sim and building a model of nanocommunication in this simulator. Second part of thesis is focused on molecular communication based on electromagnetic waves. In this case simulator NS-3 and Nano-Sim module has been used. Practical part contains detail analysis of simulators adjustment and results of simulations. Simulations are performed with different settings in several scenarios. Their comparison and results is summarized in conclusion.
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Photoluminiscent diamond nanoparticles - new diagnostic and visualization probes
Cígler, Petr
Selected problems connected with surface modification of nanosized diamond crystals, attachment of chemical sensing architectures to them and their colloidal stability were addressed. Fluorescent nanodiamonds modified by proper functional structures were shown as unique unbleachable nanoprobes for construction of future sensors useful in biological and medicinal applications.
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