Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. "x̳", "1̳-x", and "3̳" are subscripts. Abstract. Includes bibliographical references (leaves 120-128). Also available via the Internet.

Thesis (M. Sc.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references. Also available via the World Wide Web.

Thesis (Ph. D.)--University of Oregon, 2004. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 185-196). Also available for download via the World Wide Web; free to University of Oregon users.

Thesis (M.S.)--Rutgers University, 2007. / "Graduate Program in Chemistry and Chemical Biology." Includes bibliographical references (p. 24-25).

Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references (leaves 101-110). Also available in electronic version.

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Nitrogen-doped carbon materials such as carbon nanotubes and graphene have garnered much interest due to their abilities to behave as electrocatalysts for reactions important in energy production (e.g. oxygen reduction) and biosensing (e.g. hydrogen peroxide reduction). Electrocatalytic properties of these materials have been attributed to enhanced electron transfer ability exhibited by surface nitrogen atoms compared to typical carbon structures. Screen-printing has been widely employed in the production of low-cost carbon-based electrodes for sensors and biosensors. Here, we develop nitrogen-doped screen-printed carbon (N-SPCE) electrodes for detection of hydrogen peroxide - an important analyte in biosensing. Conductive ink was formulated in the lab from nitrogen-doped graphite that was produced using a simple urea-based soft nitriding technique. N-SPCEs exhibited electrocatalytic activity towards hydrogen peroxide reduction, while SPCEs prepared from unmodified carbon showed no ability to electrocatalytically reduce H2O2. Amperometric detection of H2O2 using N-SPCEs at an applied potential of -0.4 V (vs. Ag/AgCl) displayed a wide linear range of 20 µM to 5.3 mM, and a low limit of detection (2.4 µM). These performance characteristics compare favorably to other electrodes for H2O2 sensing and indicate that the low-cost, easy-to-prepare N-SPCEs described here are promising platforms for the development of biosensors.

Piezoceramics BaTiO3 doped with ZrO2 was studied in this thesis. Six different compositions were prepared from base powders of BaTiO3 and ZrO2. with 10, 20, 40, 60, 80 and 90 wt% ZrO2. These mixtures were sintered using convetional sintering method and by Spark Plasma Sintering. Resuting ceramic compacts were subjected to measuring of density, dielectric constant, permitivity, polarization P-E curves, piezoelekctric faktor, loss factor and dilatometric measurements. From these results can be said that i tis possible to create piezoceramic BaTiO3 doped by ZrO2 with relative density higher than 94 %t.d. and these ceramics can possess piezoelectric properties. Value of highest piezoelectrick factor 33=9 / was achieved with addition of 20 wt% ZrO2. Dilatometric measurements discovered effect of increasing ammount of ZrO2 in BaTiO3. Rising amount of ZrO2 had a lowering effect on initial sintering temperature and materials achieved higher relative densities. This was also true for samples sintered using SPS, where it was less obvious. Measuring of electrical properties discoverad electric conductivity for SPS sintered samples, which was most probably caused by carbon introduced into samples during SPS cycle.

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