Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"effects of doping"”.
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Effects of doping on the electronic properties of niobium triselenide
The results of magnetization, Electron Spin Resonance(ESR), and electrical resistivity measurements on both undoped and doped samples of the Charge Density Wave (CDW) material NbSe3 are reported. The magnetic studies show that both magnetic(V) and nonmagnetic(Ta) impurities may be introduced into …
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Effects of doping single and double walled carbon nanotubes with nitrogen and boron
Controlling the diameter and chirality of carbon nanotubes to fine tune their electronic band gap will no longer be enough to satisfy the growing list of characteristics that future carbon nanotube applications are starting to require. Controlling their band gap, wall reactivity and mechanical …
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Effects of doping and microstructural variables on hydrogen generated via aluminum-water reactions enabled by a liquid metal
… power or heating infrastructure, and lack of CO₂ emissions upon conversion of hydrogen's chemical energy into electricity. However, 96% of hydrogen is currently produced through steam methane reformation, which emits ~12 tons of CO₂ for every 1 ton of hydrogen produced. Consequently, …
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Experimental observations on some reduced-oxygen Chevrel-phase compounds
… SnMo6Sg, PbMo6Sg, and Cu1.gMo6Sg. Measurements of the temperature dependence of the magnetic susceptibility have been made on these gettered Chevrel compounds, and comparisons have been made between the Pauli susceptibility of gettered and ungettered compounds. The Pauli susceptibility is …
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Improvement in the Growth and Superconducting Properties of Bulk Sm-Ba-Cu-O Superconductors Fabricated in Air
Sm-Ba-Cu-O (SmBCO), which is a member of rare-earth barium cuprate [(RE)BCO] high-temperature superconductors, has significant potential for practical applications due to its higher critical transition temperature (Tc), higher critical current density (Jc), the so-called ‘peak effect’ …
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Study of the Valence Tautomer Complex [Co(sq)(cat)(3-tpp)2] for Applications in Molecular Spintronics
… electronic devices. Two similar classes of materials, known as spin crossover (SCO) and valence tautomers (VT) respectively, are of particular interest due to their multifunctional properties, which are controllable via several external parameters, such as temperature, light irradiation, …
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Doping in sport: an interdisciplinary study of its management and prevention.
This thesis addresses aspects of two key fields of research. One component addresses the areas of medicine and science, whilst the second addresses the areas of law and policy. This research contributes new results regarding effects of doping on sport achievements, the widespread nature of doping …
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Effects of transition metal doping on multiferroic ordering in ni3v2o8 and fevo4
<p>We have studied the effects of doping both non-magnetic and magnetic ions on the phase transitions and multiferroic ordering in two multiferroic oxides; Ni3V2O8 and FeVO4. Magnetic, dielectric, specific heat, polarization and AC susceptibility measurements were used to track changes in phase …
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Electronic, optical, mechanical and thermoelectric properties of graphene
Graphene, a two-dimensional allotrope of graphite with sp^2 bonded carbon atoms, is arranged in honeycomb structure. Its quasi one-dimensional form is graphene nanoribbon (GNR). Graphene related materials have been found to display excellent electronic, chemical, mechanical properties along with …
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Thermal and Optical Properties of Oxide Coatings for High-Temperature Applications
… to provide thermal insulation on account of their low thermal conductivity. However, many of them that are currently used, such as zirconia, mono- and disilicates, and zirconates, are translucent to thermal radiation up to 3 – 6 microns, the spectral range over which radiation from objects …
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Growth of V2O5 films for electrochromic and battery applications
… Particular interest is in the production of electrochromic coated windows for energy saving purposes. Over the past year’s scientists have struggled to develop electrochromic coated windows which would be of low cost, acceptable optical characteristics, long-term durability and at the same …
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Advanced simulations of cross-linked thermoset and conjugated polymers for multifunctional applications
… the structure–property relationships of these materials remain challenging due to complex molecular interactions and hierarchical structure. This dissertation presents a unified multiscale modeling framework that integrates coarse-grained molecular dynamics (CG-MD), density functional …
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Biofuels Production Via Catalytic Hydrocracking Of Ddgs Corn Oil And Hydrothermal Decarboxylation Of Oleic Acid Over Transition Metal Carbides Supported On Al-Sba-15
<p>The purpose of this research is to minimize the gap between the production of biofuels and the production of petroleum-based fuels by developing catalysts that can utilize renewable non-food based feedstocks (waste vegetable oils, algal oil, brown grease, etc.) and have great performance under …