Index Catalog // ScholarsArchive@OSU

Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

Creator:: Han, Jae-Kyung
Abstract:: High-pressure torsion (HPT) is an effective severe plastic deformation (SPD) technique to produce bulk nanostructured materials (BNMs). These BNMs often show a combination of exceptional mechanical and physical properties. Processing of single metals and alloys by HPT has been understood that the homogenous microstructures can be achieved throughout the disk...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jae-Kyung Han for the degree of Doctor of Philosophy in

Development and Trial of a Usability Testing Protocol for Biomass Cookstoves : An Interdisciplinary Approach

Creator:: Moses, Nicholas D.
Abstract:: Improved cookstoves have been designed and disseminated for several decades in an effort to address the human health and environmental issues caused by the inefficient, traditional biomass cooking and heating methods used by 40% of the world’s people. Engineers and designers working on these improved stoves have tended to focus...
Resource Type:: Masters Thesis
Full Text:: be adapted to create the most appropriate evaluation for a specific context (Kwahk and Han 2002

Computational Design for Metal Organic Responsive Frameworks (MORFs)

Creator:: Manion, Charles A.
Abstract:: Metal organic Frameworks (MOFs) that experience stimuli induced structural transformation could enable a whole new class of materials with remarkable properties. Photoactuating moieties in the structure could effect changes in the pore space or macroscale shape change enabling light driven gas separation and actuators. Here, we present a novel approach...
Resource Type:: Dissertation

Determination of Mass Flow Rate through Plain Mesh Wick and Nano- Structured Mesh Wick for the Design of Thermal Compressor Systems

Creator:: Uwaoma, Ifeanyi A.
Abstract:: Wicking action refers to the movement of a liquid through a porous or a structured surface via capillary action. This phenomenon is affected by surface geometry, such as the wick thickness and pore size of the wick, as well as fluid properties, such as viscosity and surface tension of the...
Resource Type:: Masters Thesis

Reaction Pathways of Oxo-Hydroxo Group 5 Clusters to Metal Oxide Thin Films

Creator:: Mansergh, Ryan H.
Abstract:: Oxo-hydroxo Group 5 metal clusters are an untapped resource to study and advance aqueous solution processing of metal oxide thin films. The tetramethylammonium (TMA) hexatantalate salt (TMA6[H2Ta6O19]) yields dense Ta2O5 films (~95% of the bulk ß-Ta2O5 density) with atomically smooth surfaces (<4 Å root mean square surface roughness). This same...
Resource Type:: Dissertation

Robotic Actuation and Control with Programmable, Field-Activated Material Systems

Creator:: Bira, Nicholas P.
Abstract:: This dissertation presents novel, field-activated smart material systems for the actuation and control of autonomous robots. Smart materials, a type of material whose properties can be changed with an external stimuli, represent a promising direction to expand upon existing robotic control and actuation methods, particularly in the sub-fields of soft...
Resource Type:: Dissertation

Pre-Prototyping Framework: An Early Design Prototyping Methodology for Human-Centered Products and Workplaces

Creator:: Ahmed, Salman
Abstract:: Prototyping is a crucial step in product design and development, but it is also known as the highest sunk cost. The top 20 Research and Development (R&D) department spends 142 billion dollars, yet 40 to 46 percent of this money goes into developing products that cannot even make to the...
Resource Type:: Dissertation

Optical sensing for nondestructive structural evaluation and additive manufacturing process monitoring

Creator:: Hu, Xiaochen
Abstract:: Sensing is a significant engineering science which quantify parameters from the physical world and discover the physics running behind the measurement process. Optical sensing makes use of electromagnetic waves from infrared to ultraviolet on the light spectrum as a medium to measure variables, such as position, temperature and strain. Image...
Resource Type:: Dissertation

Characterization and Development of Ni-based Superalloys for Supercritical Carbon Dioxide Applications

Creator:: Adam, Benjamin M.
Abstract:: The advent of supercritical CO2 as a new heat-exchange medium has seen strong interest from the power industry and the energy research field recently. It is advan- tageous in comparison with other heat-exchange cycles, as it can be operated safely at much higher temperatures and pressures, thus increasing the thermal...
Resource Type:: Dissertation

Photonic Sintering of Nanoparticle Inks : Experimental Characterization, Computational Modeling and System Design for Additive Manufacturing

Creator:: MacNeill, William D.
Abstract:: Photonic sintering of nanoparticles is a relatively new process for sintering of nanoparticles, deposited on a substrate, into functional solid structures. The working principle of this process is the incidence of large-area broad-spectrum light onto deposited nanoparticles, which results in heat generation in the nanoparticles and their subsequent densification. Key...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

Development and Trial of a Usability Testing Protocol for Biomass Cookstoves : An Interdisciplinary Approach

Computational Design for Metal Organic Responsive Frameworks (MORFs)

Determination of Mass Flow Rate through Plain Mesh Wick and Nano- Structured Mesh Wick for the Design of Thermal Compressor Systems

Reaction Pathways of Oxo-Hydroxo Group 5 Clusters to Metal Oxide Thin Films

Robotic Actuation and Control with Programmable, Field-Activated Material Systems

Pre-Prototyping Framework: An Early Design Prototyping Methodology for Human-Centered Products and Workplaces

Optical sensing for nondestructive structural evaluation and additive manufacturing process monitoring

Characterization and Development of Ni-based Superalloys for Supercritical Carbon Dioxide Applications

Photonic Sintering of Nanoparticle Inks : Experimental Characterization, Computational Modeling and System Design for Additive Manufacturing

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