Seminary, Bc., M.Sc. and Ph.D. theses
Seminary theses
Preparation and characterization of ITO layers prepared by deposition from colloids
tutor - J. Mrázek, NEW TOPIC, OPEN
The goal of the work is to find optimal parameters for preparation of trasparent ITO layers with low resistivity for optics and photo-voltaics applications.
The work will comprise deposition of ITO layers onto glass planar and fiber substrates by a dip-coating method. Mechanical and electrical properties of the prepared samples will be studied in dependence of of deposition conditions and thermo-chemical treatment in 100-600°C range. The results will be compared to those measured for layers prepared by magnetron sputtering and to commercially available samples.
Characterisation of hollow optical fibers and optimaliziation of the drawing process parameters
tutor - O. Podrazky, NEW TOPIC, OPEN
The goal of the work is finding of the relation of hollow fibres dimensions to the drawing process parameters (temperature, drawing speed, pressure).
The work will comprise introduction into fibre-drawing process and manipulation with a fiber-cleaver and an optical microscope equiped with a digital camera. Then a detailed characterisation of capillary-or micro-structured fiber and defining a relation between process parameters and fiber geometry will follow.
BC theses TiO2 nanoparticle layers on optical fibers and their photocatalytic activity Institute of Chemical Technology in Prague, 2008-2010, tutor - V. Matějec, BC student Ivo Bartoň The goal of the thesis is a preparation of stable layers containing anatas nanoparticles on glass slides and optical fibers, characterization of their optical properties and morphology and testing of their photocatalytic activity during methylene blue decomposition. MSc. theses Choice and characterization of optochemical transducers of selected chemical parameters for a fiber-optic sensor Czech Technical University FBMI, tutor M.Pospíšilová, NEW TOPIC, OPEN Familiarize yourself with both - steady state and time resolved fluorescence spectropy methods. Select suitable fluorescent commercially available optical trasducers(dyes) for selected chemical parameters in biologic samples. Immobilize the dyes to thin layers and charcterize the layers by a fluorescence spektrophotometer. The influence of geometry of a fiber-optic element sensitive layer to sensitivity of bioluminescence (bio-sensor) Czech Technical University FBMI, 2009-2010, tutor M.Pospíšilová, MS student Hana Vrbová The goal of the thesis is a comparison of influence of various types of optical elements, connected to an optical fiber, and influence of active layers to the amount of detected bio-luminescence. An optical element was designed, allowing two-order increase of bio-luminescence detection. The work was awarded by "Young Investigator Award" at a czech-slovak conference. Influence of a matrix and pH-transducer concentration to fluorescence intensity as a function of teh excitation energy for a pH fiber-sensor Charles University, 2009-2010, tutor M.Pospíšilová, MS student Pavel Škrabal The thesis is focused on pH-determination in palnt cells. A suitable optical pH-transducer and a tapered optical fiber, smaller than teh cells, are used for the measurement. The goal of the thesis will be spectral (absorption and fluorescence) characterization of selected pH-transducers, entrapped in various materials, measured in various configurations. PhD. theses Faculty of science Charles University in Prague in co-operation with Université de Rennes 1, 2006-2010,tutor -D.Nižňanský, L.Spanhel, V. Matějec, PGS student - J.Mrázek The thesis deals with the sol-gel synthesis of novel metalic and ceramic materials and their application in the field of optical sensors, opto-electronic converters and active materials for light generators. Recently the thesis is focuse to the preparation of nanoceramic materials based on ZnxTiyOz, titanates and zirconates of rare earth elements and their applications in photovoltaic and photocatalytic devices and laser systems. Related Ph.D. themes: Thulium doped fiber lasers, tutor P.Peterka (dpt.210) Passively Q-switched fiber-lasers, tutor P.Peterka (dpt.210)
Lectures International Karel de Grote-Hogeschool Hoboken, Belgium, "Technology of optical fibers", I.Kašík, O.Podrazký Ecole Nationale Supérieure d'Ingénieurs Limoges, France, "Technology of optical fibers", J.Mrázek Advanced Study Course on Optical Sensing (ASCOS), "Optical fibers for optical sensing", I.Kašík Czech Republic Optical Fibers (optoelectronics, photonics), Czech Technical University FJFI, FEL, I.Kašík, T.Martan Fiber Optics for Biomedicine, Czech Technical University FBMI, M.Pospíšilová Optical (fiber) sensors, Charles University MFF, I.Kašík Co-accreditations for following fields of study: Material Chemistry and Technology (Institute of Chemical Technology, Prague) Electrotechnics and Informatics (Czech Technical University FEL, FJFI). Preparation of metalic nanoparticles and their photonic application