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Intrinsic Disorder Effects and Persistent Current Studies of YBCO Thin Films and Superconducting Tunnel Junctions
DownloadFall 2009
This thesis studies the intrinsic disorder effects and the transport and magnetic properties of ring-shaped epitaxial thin films and superconducting tunnel junctions (STJs) of the high temperature superconductor YBa$2$Cu$3$O${7-\delta}$. We used an unconventional contactless technique that allows...
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Surface modification of zirconium implants via electrochemical anodization and wet chemical techniques
DownloadFall 2011
Metals such as titanium (Ti) and zirconium (Zr) have been widely applied in the orthopaedic and orthodontic field for construction of joint replacement prostheses and teeth implants due to their lower cytotoxicity, excellent mechanical properties, and corrosion resistance. However, the current...
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Spring 2013
Research was undertaken into the organic semiconductors tris(8- hydroxyquinoline)aluminum (Alq3) as well as bis(8-hydroxyquinoline)zinc (Znq2) to the effect of improving achievable morphological control using an inexpensive evaporation based solution synthesis method. By varying experimental...
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Highly Ordered Methanofullerene Nanotube Array: Fabrication and Implications for Room Temperature Organic Spintronics
DownloadFall 2013
Organic semiconductors have come to the forefront of research in physics, chemistry and electronics due to their impressive properties and low cost of device production. Presented here is a novel centrifuge assisted organic nanowire growth technique and its application in the fabrication of...
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Fall 2013
Rosette nanotubes (RNTs) are bio-inspired nanomaterials generated from the self-assembly of a guanine-cytosine motif called the “G∧C” base. These nanotubular architectures are promising 2-D coating materials for bone tissue engineering applications, and delivery scaffolds for hydrophobic drug...
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Fall 2014
In this thesis, a new technique named vapour-liquid-solid glancing angle deposition (VLS-GLAD) will be used to enhance structural control over branched nanowire (NW) arrays. NWs are 1D crystals that have been extensively applied in sensors, photovoltaic devices, and transistors. The functional...
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Fall 2014
Nanoscale materials offer opportunities to employ unique physical phenomena and performance enhancement in many applications, including energy conversion. The coupling of functional materials properties and nanoscale morphologies is paramount for the successful implementation of nanostructured...
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Synthesis and Characterization of TiO2 Nanowire and Nanotube Arrays for Increased Optoelectronic Functionality
DownloadFall 2014
The n-type semiconducting, vertically oriented TiO2 nanotube and nanowire arrays constitute a mechanically robust, high surface area, easily functionalized architecture with vectorial electron percolation pathways and have been the focus of interest for variety of applications including but not...
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Fall 2014
Metamaterials are artificially engineered materials with tailored properties for applications in imaging, sensing, waveguiding and quantum optics. Even though they hold the potential for transformative impact, industrial applications have been impeded by large absorption losses in material...
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High Performance Germanium-based Anode Materials for Lithium-ion and Sodium-ion Rechargeable Batteries
DownloadFall 2014
In this thesis the electrochemical performance of germanium nanowires (GeNWs) as anode for lithium-ion batteries (LIBs) and tin-germanium-antimony (Sn-Ge-Sb) thin films as anode for sodium-ion batteries (NIBs) have been investigated. Scientific literature shows a substantial study-to-study...