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Electrochemical Characterization of Nanostructured Surfaces Modified by Substancies with Thiol Bound
Urbánková, Kateřina ; Kynclová, Hana (referee) ; Hrdý, Radim (advisor)
This master thesis deals with nanotechnology, nanoparticles and nanostructured surfaces, electrochemical methods, especially voltammetry, cyclic voltammetry, electrochemical impedance spectroscopy and contact angle measurement. One part is focused on electrodes primarily nanostructured and modified by substancies with thiol bound. Tutorial for preparation of gold nanostructured electrods is introduced in practical section including SEM photos of electrode surface. Nanostructured and bare gold electrodes were modified by 11-mercaptoundecanoic acid, streptavidin, glycine and biotin and measured by cyclic voltammetry, electrochemical impedance spectroscopy and contact angle.
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Application of nanofiller in electroinsulating materials
Mohyla, Petr ; Rozsívalová, Zdenka (referee) ; Frk, Martin (advisor)
This project deals with calculation parts of complex permittivity varnish samples which is filled by nanoparticles of metal oxides. Opening of this project deals with theory of dielectric and effects in dielectric, theory of compounds and expressions in composite systems. Following topic is theory of nanoparticles and nanotechnologies and summarize adjusted results about this branch of knowledge. In practical part of work is include method which was use to make varnish samples filled by nanoparticles, prepare to measurement methods and whole results of measurement. In the end of work is analysis influence of filler particles each filler types to dielectric material and results verified mixture mathematical expressions.
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Preparation and Characterization of Drug Carrier Systems on the Basis of Magnetic Nanoparticles
Chvátalová, Barbora ; Burdíková, Jana (referee) ; Kalina, Michal (advisor)
This bachelor thesis deals with the study of magnetic nanoparticles, optimizing their preparation and stabilization. The nanoparticles with different ratios of Fe2+ and Fe3+ ions were prepared by coprecipitation by variously concentrated sodium hydroxide. Three samples of particles were selected and were further observed. Their stability in Milli-Q water, buffer, polyvinylalcohol, hyaluronic acid and chitosan was studied in function of time using methods of dynamic and electrophoretic light scattering. By UV-VIS spectrometry it was confirmed that the magnetic nanoparticles were actually prepared. Nanoparticles coated with chitosan and hyaluronic acid were then further characterized using FT-IR, XRD and SEM.
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Nanorobots
Haluza, Lukáš ; Vrbka, Martin (referee) ; Křupka, Ivan (advisor)
The point of Bachelor´s work is to illustrate Nanotechnology and Nanorbots to all. The first part concerns Nanotechnology as a science, description of nanoworld and its explanation a technical terms. The second part concerns nanorobots, their construction, succeses which was reached, areas of use, plans and problems that inhibit their full usage in ordinary life
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Application of nanofillers into thermoplastics
Žák, Luboš ; Žídek, Jan (referee) ; Kučera, František (advisor)
Bachelor thesis is focused on the search of the state of knowledge in the preparation, properties and applications of nanocomposites with thermoplastics polymer matrix and different types of nanofillers in theoretical part. Methods for the preparation of nanocomposites and techniques used for their characterization are clearly describes. The first method for preparing nanocomposites is an application of nanofiller to the polymer solution with subsequent removal of the solvent. The second method is the dispersion polymerization of nanofiller in the monomer. The last one is the application of nanofiller in the dispersion of ethanol into the polymer melt. The experimental part deals with the preparation of foils for characterization of rheological properties of nanocomposites at first. Polystyrene was polymer matrix and selected nanofillers was applied to the polymer solution and then it was removed the solvent. The second method was the preparation of nanocomposites dispersion polymerization of nanofillers in the monomer. The method in-situ preparation of nanocomposite is based on the thermal initiated polymerisation of styrene in the dispersion of nanofillers with the selected type radical initiator. The third proposed method was the application of ethanol dispersion of fillers into the polymer melt in the Brabender mixer.
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Potential risks of nano-particle materials utilization
Flimelová, Miroslava ; Šmejkalová, Daniela (referee) ; Kučerík, Jiří (advisor)
The thesis „Potential risks of nano-particle materials utilization“ summarizes scientific knowledge on nanotechnology, nano-particle and nano-chemistry. The aim of the work is the literature overview on potential problems associated with their utilization. Thesis is focused particularly on nanoparticles exploitation and limits connected with their understanding and prediction of their fate in the environment. The impact of nanotechnology on the society and every-day life is discussed with respect to various risk sources.
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Analysis of nanotechnology in the Czech Republic in the years 1993-2003 and its contribution to the economic growth
Konečný, Lukáš ; Štekláč, Jiří (advisor) ; Lukášová, Tereza (referee)
The goal of this paper is to analyse the development of nanotechnology in the Czech Republic in the years 1993-2013. The main focus is on contribution of nanotechnology to the economic growth of the Czech Republic. The first part of the paper is focused on history and importance of nanotechnology in the world. It contains a review of theories of economic growth in relation to technological progress. The second part describes the history of Czech nanotechnology and reveals its current state. The main section of this part provides an analysis of the Czech nanotechnology businesses and their development in the years 1993-2013.
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Novel foods
MIKLOŠOVÁ, Katarína
The contents of the Bachelor's thesis is the performance of novel foods. Since it is relatively new and not much known area of the food industry, is available to only a limited amount of information. The work shows how it looks on the Czech market legislation, approval, placing into circulation and food safety. It is also possible to read at work how consumers and retailers perceive novel foods. What range of novel foods is in our market? A new type of food is also genetically modified organisms, that work also deals with.
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