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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 20 of 21 for “"oxide substrates"”.
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Synthesis and Characterization of Pyrrole Based Adhesion Promoter Systems on Oxide Substrates
… were studied for their adsorption behavior on oxide substrates and chemical or electrochemical deposition of polypyrrole over modified oxide surface or electrodes. Several analytical techniques such as contact angle measurement, surface plasmon resonance spectroscopy (SPR), UV-VIS Spectroscopy, …
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Synthesis and Characterization of Thin films of Novel Functionalised 2,5-Dithienylpyrrole Derivatives on Oxide Substrates
… This easy peeling of the PPY layer from the oxide substrate was circumvented by design of novel adhesion promoters, which compatibilise the two incompatible surfaces- the polymer film and the oxide substrate. The first part of the research was focused on the synthesis of different classes of …
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Understanding the molecular-level chemistry of H2O plasmas and the effects of surface modification and deposition on a selection of oxide substrates
… investigated through characterization of metal oxides (SiOxNy, nat-SiO2, and dep-SiO2) following their exposure to a range of plasma discharges. Here, emphasis was placed on the surface wettability, surface charge, and isoelectric point (IEP). The results demonstrate that 100% Ar, H2O, and NH3 …
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Giant Magnetoresistance in Magnetic Multilayers Using a New Embossed Surface
Previous research on new novel substrates for giant magnoresistance structures has indicated that a net increase in the effect is present. The substrates studied were V-grooved or stepped, however research presented in this thesis used an embossed surface manufactured from alumina oxide which …
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Substrate Dependence on the Growth and Texture of Lead Titanate and Lead Zirconate Titanate Thin Films by Metal Organic Chemical Vapor Deposition
Substrates employed for PT and PZT film growth in this study can be categorized as the single crystalline substrates, polycrystalline substrates, and the amorphous substrates. The PT films grown on the single crystal oxide substrates (MgO(100) and LaAlO$\sb3$(100)) are single crystalline and …
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Thermal transport across interfaces with molecular layers
… with controllable surface chemistry onto oxide substrates such as quartz and sapphire. A self-assembled monolayer (SAM) of silane molecules is also grown on sapphire to make the third variety of molecular interfaces. The technique of transient absorption (TA) is used to probe the evolution …
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Electrodeposited macroporous vanadium oxide Li-ion battery materials
… the electrodeposition of 3D macroporous vanadium oxide inverse opals and binary inverse opals on transparent conducting oxide substrates and stainless steel and thermally oxidized stainless-steel substrates. The electrodeposition follows a diffusion limited growth mode to form 3D porous …
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The Study of Zirconium Hydroxide and Zirconium (IV) Metal-Organic Frameworks as Reactive Substrates for the Decomposition of Chemical Warfare Agents
… study investigates the efficacy of zirconium hydroxide, Zr(OH)<sub>4</sub>, and Zr(IV) Metal-Organic Frameworks (MOFs) in the uptake and decomposition of the gas phase nerve agent simulant dimethyl methylphosphonate, DMMP. This investigation was carried out using two different methods: 1) with the …
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Kinetics of Methyl Ketone and Levulinic Acid Oxidative Scission Over Supported Vanadium Oxide Catalysts
… oxidative scission over supported vanadium oxide catalysts. However, the high selectivity of methyl scission during LA oxidation appears to be unexpected according to the trends observed during the analogous oxidative scission of methyl ketones (e.g., 2-butanone and 2-pentanone). The impacts …
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Investigation of solution-phase and on-chip binding of C-reactive proteins and antibodies
… of CRP antibody to silanised silicon-silicon oxide substrates implemented using the organosilane APTES and the subsequent binding of CRP antigen to this immobilised CRP antibody was explored. The binding event of CRP antigen to surface immobilised CRP antibody was electrically characterised in …
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Electronic properties and surface chemistry of vanadium oxide systems: New insights from synchrotron X-ray techniques
Vanadium oxides are considered exemplary materials within both fundamental condensed matter physics and heterogeneous catalysis research. The metal-insulator transition (MIT) inVO2 has been at the centre of attempts to understand the role of electron correlations in transition metal oxides since …
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Design and Development of Sustainable, Low-Cost, High-Performance Nanomaterials for Thermoelectric and Solar Hydrogen Applications
… doping and deposition on fluorine doped tin oxide substrates were employed to partially decouple charge transport pathways, enabling enhanced Seebeck coefficients, reduce thermal conductivity while maintaining electrical conductivity. The materials were comprehensively characterised, and …
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Research and development of CuInSe[2]-based photovoltaic solar cells.
… of window materials (ZnSe and CdS) on glass/TCO substrates following the conditions prior-established at Sheffield Hallam University has been achieved. CuInSe[2] films have been successfully grown on glass/TCO by electrodeposition. The semi-conducting layers were characterised to investigate …
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II-VI Core-Shell Nanowires: Synthesis, Characterizations and Photovoltaic Applications
… nanowire array were synthesized on indium-tin-oxide substrates. Their structures and optical properties have been investigated in detail, which revealed that, despite highly mismatched interfaces between the core and shell, both systems exhibited an epitaxial growth relationship. The quenching …
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Size Controlled Metal Oxide Nanoparticles:Synthesis, Characterization, and Application to Catalysis
… on the synthesis of size-controlled metal oxide nanoclusters (< 10 nm) on amorphous silica and their catalytic performance in thermal degradation of chlorinated benzenes with regard to the cluster size effect. Furthermore, with the concern that metal can condense as the nano-size nuclei …
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Structural and electronic properties of noble metals on metal oxide surfaces
Noble metals on metal oxide surfaces play crucial roles in many catalysis applications. Due to extreme complexity of the interfaces and catalytic reaction processes, basic science studies of model systems are needed to guide the construction and optimization of new industrial catalysts. We have …
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Growth and Characterization of Epitaxial Oxide Thin Films
Epitaxial oxide thin films are used in many technologically important device applications. This work deals with the deposition and characterization of epitaxial WO3 and SrBi2Ta2O9 (SBT) thin films on single crystal oxide substrates. WO3 thin films were chosen as a subject of study because of recent …
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Sintering of metal nanoparticles on model substrates
… exhaust gases from automobiles contain carbon monoxide, nitrogen oxide compounds, and other hydrogen compounds, which are detrimental to the atmosphere, and a catalyst is required to convert these gasses into less harmful gases, such as nitrogen, carbon dioxide, and water vapor. These reactions …
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Growth of V2O5 films for electrochromic and battery applications
Vanadium pentoxide (V2O5) is an electrochromic material. Research into electrochromic devices has become more popular with the renewed interest in environmentally-friendly ‘green’ technologies. Particular interest is in the production of electrochromic coated windows for energy saving purposes. …
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Atomic resolution studies of oxide superlattices and ultrathin films
… first for semiconductors, and now with oxides. In the oxides thin film research community, there have been concerted efforts recently to develop a number of epitaxial oxide systems grown on single crystal oxide substrates that display a wide variety of novel interfacial functionality, …
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