Index Catalog // ScholarsArchive@OSU

Wind-current Interactions of the Sri Lanka Dome and Tropical Indian Ocean

Creator:: Cullen, Kerstin
Abstract:: The southwest monsoon, which may be idealized as the northward movement of the intertropical convergence zone in the Indian Ocean associated with differential heating of land and ocean, brings a seasonal reversal of currents and winds in the Bay of Bengal and the Arabian Sea. Atmospheric convection from monsoon activity...
Resource Type:: Dissertation
Full Text:: meant a lot to me. Finally, I would like to thank my graduate committee representative David MacIntyre

Use of Targeted and Non-Targeted Analysis to Study Complex PAH Environmental Mixtures

Creator:: Chibwe, Leah
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous contaminants formed from the incomplete combustion of organic material. These contaminants are of concern because of their widespread presence in the environment and toxic properties. In addition, PAHs encompass a class of diverse compounds with varying physicochemical properties and exist in the environment as...
Resource Type:: Dissertation
Full Text:: additionally thank the members of my graduate committee, Drs. David McIntyre, Claudia Maier, Neal Sleszynski

The optical properties of multi-scale plasmonic structures and their applications in optical characterization and imaging

Creator:: Kuhta, Nicholas Anthony
Abstract:: The optical response of metallic structures is dominated by the dynamics of their free electron plasma. Plasmonics, the area of optics specializing in the electromagnetic behavior of heterogeneous structures with metallic inclusions, is undergoing rapid development, fueled in part by recent progress in experimental fabrication techniques and novel theoretical approaches....
Resource Type:: Dissertation

The energy extraction performance of an oscillating rigid and flexible foil

Creator:: Totpal, Alexander D.
Abstract:: The aerodynamic performance of an oscillating pitching and plunging foil operating in the energy harvesting mode is investigated. Experiments are conducted in a closed-loop recirculating wind tunnel at Reynolds numbers of 24,000 to 48,000, and reduced frequencies (k = fc/u) of 0.042 to 0.083. Foil kinematics are varied through the...
Resource Type:: Masters Thesis
Full Text:: , Gess, and McIntyre, for all of your support and guidance during the course of this degree. Drs. David

Subwavelength light confinement and quantum chaos in micro- and nano-structured metamaterials

Creator:: Govyadinov, Alexander A.
Abstract:: This dissertation concerns a broad range of unique phenomena related to the light propagation at nano- and micro-scales. To access the nano-domain, we introduce anisotropy-based waveguides with positive- and negative-index modes. These novel structures allow energy propagation in subwavelength regions and, in contrast to surface waves, have the mode structure...
Resource Type:: Dissertation

Substitutional Effects on the Electromechanical Properties of Lead-free, Piezoelectric (Na₀.₅Bi₀.₅)TiO₃-BaTiO₃ (NBT-BT)

Creator:: McQuade, Ryan R.
Abstract:: This work investigates the effect of cation substitution on the properties of the lead-free, solid solution (Na₀.₅Bi₀.₅)TiO₃-BaTiO₃ (NBT-BT). Substitution into NBT-BT increases disorder and increases the relaxor ferroelectric properties. These relaxor ferroelectric materials show large piezoelectric strains that can be utilized in actuator applications. Ceramic samples were prepared using standard...
Resource Type:: Dissertation
Full Text:: second highest strain performance (d33* = 570 pm/V). The 4% BiAlO3 substituted sample uniquely

Substitution Effects on the Structure and Electronic Behavior of Ternary Precious Metal Oxides

Creator:: Flynn, Joshua
Abstract:: Due to the high cost of precursor materials, complex oxides of 4d and 5d transition metals are under-studied compared to their 3d counterparts. Recent studies have shown that oxides containing heavier transition metals can exhibit exotic electronic states due to presence of strong spin-orbit coupling. The goal of this dissertation...
Resource Type:: Dissertation
Full Text:: show Curie-Weiss behavior for x = 0.2–0.6, which arises from near 50:50 ratio of Ir(V) and Ir

Structure-property relationships of YbFe₂O₄-type layered transition metal oxides

Creator:: Grajczyk, Rosa
Abstract:: The structure–property relationships of solid solutions within the YbFe₂O₄ family of compounds have been studied in relation to their optical, dielectric and magnetic properties. This family of compounds is of recent interest because of the trigonal bipyramid coordination that is rarely observed in transition metal oxides. The systematic study of...
Resource Type:: Dissertation
Full Text:: . Arthur Sleight, Dr. Michael Lerner, Dr. David Cann, and Dr. David McIntyre. Thank you for your

Structural Elucidation of Metal-Oxo Systems by X-Ray Scattering Methods

Creator:: Kozma, Karoly
Abstract:: Metal-oxo clusters are discrete molecular metal-oxides. Most metals form numerous cluster compounds that can be ligated, unligated, charged or neutral, controlling their solubility in water and/or organic solvents. They are important species to study reaction pathways from the monomeric building units to the bulk metal oxides, and have many application...
Resource Type:: Dissertation

Semiconductor Nanocrystals as Detection Components in Microfluidic Analytical Systems

Creator:: Pengpumkiat, Sumate
Abstract:: Miniaturized and portable microfluidic analytical platforms have been widely explored in the broad field of chemical analysis. The concept of microfluidics offer a number of important advantages, including low reagent consumption, low-cost detection, high sample throughput, and shorter analysis time. Semiconductor nanocrystals or quantum dots have been extensively utilized in...
Resource Type:: Dissertation
Full Text:: , Dr. David McIntyre and Dr. Neal Sleszynski for their insightful comments, valuable time and

ScholarsArchive@OSU

Wind-current Interactions of the Sri Lanka Dome and Tropical Indian Ocean

Use of Targeted and Non-Targeted Analysis to Study Complex PAH Environmental Mixtures

The optical properties of multi-scale plasmonic structures and their applications in optical characterization and imaging

The energy extraction performance of an oscillating rigid and flexible foil

Subwavelength light confinement and quantum chaos in micro- and nano-structured metamaterials

Substitutional Effects on the Electromechanical Properties of Lead-free, Piezoelectric (Na₀.₅Bi₀.₅)TiO₃-BaTiO₃ (NBT-BT)

Substitution Effects on the Structure and Electronic Behavior of Ternary Precious Metal Oxides

Structure-property relationships of YbFe₂O₄-type layered transition metal oxides

Structural Elucidation of Metal-Oxo Systems by X-Ray Scattering Methods

Semiconductor Nanocrystals as Detection Components in Microfluidic Analytical Systems

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