Index Catalog // ScholarsArchive@OSU

A theoretical and experimental study of self-propagating high-temperature synthesis of titanium carbide

Creator:: Huque, Ziaul
Abstract:: Self-propagating high-temperature synthesis (SHS) is a new method of producing advanced ceramic materials and offers an attractive alternative to conventional methods of materials processing. An experimental investigation was carried out to determine the SHS reaction wave propagation speed in a vertical cylindrical compact made from a mixture of titanium and...
Resource Type:: Dissertation

An experimental study of fluid flow and heat transfer in rectangular microchannels

Creator:: Popescu, Aristotel
Resource Type:: Dissertation

Electroluminescent and photoluminescent phosphor development and a facile approach to synthesis of refractory silicates at low temperatures

Creator:: Clark, Benjamin L.
Resource Type:: Dissertation

Flow characteristics of co-flowing, laminar streams in a rectangular microchannel

Creator:: Oak, Jason
Abstract:: The effects of varying flow rate ratio and Reynolds number on the momentum diffusion and flow development of two co-flowing, laminar streams in a rectangular microchannel are presented. The microchannel has an aspect ratio of approximately 16 with a width of 1006 μm and a height of 63 μm. A...
Resource Type:: Masters Thesis

Laminar natural convection within long vertical uniformly heated parallel-plate channels and circular tubes

Creator:: Vorayos, Nat
Abstract:: The problem of simple mathematical models of laminar natural convective flow within a long vertical parallel-plate channels and circular tubes kept at uniformly heated walls is revisited to seek a clear physical understanding of heat transfer mechanisms. A series solution method to analyze the fully developed flow and an integral...
Resource Type:: Dissertation

A new trigonal huntite material and subgroup relationships between crystallographic space groups

Creator:: Hruschka, Michael Archimedes and Hruschka, Michael A.
Abstract:: The use of an adjacency matrix to determine distant (not maximal or minimal) subgroup and supergroup relationships between crystallographic spacegroup types is described. Full lists of space-group types that are supergroups and subgroups for every space-group type were compiled. A list of the space-group types connected to each space-group type...
Resource Type:: Dissertation

Adhesive microlamination protocol for low-temperature microchannel arrays

Creator:: Paulraj, Prawin
Abstract:: A new adhesive bonding method is introduced for microlamination architectures, for producing low-temperature microchannel arrays in a wide variety of metals. Sheet metal embossing and chemical etching processes have been used to produce sealing bosses and flow features, resulting in approximately 50% fewer laminae over traditional methods. These lamina designs...
Resource Type:: Dissertation

Hydrogen production via a sulfur-sulfur thermochemical water-splitting cycle

Creator:: AuYeung, Nicholas J.
Abstract:: Thermochemical water splitting cycles have been conceptualized and researched for over half a century, yet to this day none are commercially viable. The heavily studied Sulfur-Iodine cycle has been stalled in the early development stage due to a difficult HI-H₂O separation step and material compatibility issues. In an effort to...
Resource Type:: Dissertation

Effects of fluid axial conduction on liquid metal natural circulation and linear stability

Creator:: Sabharwall, Piyush
Abstract:: The effect of fluid axial thermal conduction on one-dimensional liquid metal natural circulation and its linear stability was performed through non-dimensional analysis, steady-state assessment, and linear perturbation evaluation. The Nyquist criterion and a root search method were employed to find the linear stability boundary of both forward and backward circulations....
Resource Type:: Masters Thesis

Measurement of optical bandgap energies of semiconductors

Creator:: Russell, Joshua A.
Abstract:: A method for bandgap energy determination using di use re ection is presented and compared to the traditional integrating sphere method. We have found the bandgap energies of ZnO, TiO₂, Cu₂O, Si, SnZrS₃, SnZrSe₃, Sn₂S₃, and BiCuOSe powders with both methods and found they agree within 0.03 eV. We have...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

A theoretical and experimental study of self-propagating high-temperature synthesis of titanium carbide

An experimental study of fluid flow and heat transfer in rectangular microchannels

Electroluminescent and photoluminescent phosphor development and a facile approach to synthesis of refractory silicates at low temperatures

Flow characteristics of co-flowing, laminar streams in a rectangular microchannel

Laminar natural convection within long vertical uniformly heated parallel-plate channels and circular tubes

A new trigonal huntite material and subgroup relationships between crystallographic space groups

Adhesive microlamination protocol for low-temperature microchannel arrays

Hydrogen production via a sulfur-sulfur thermochemical water-splitting cycle

Effects of fluid axial conduction on liquid metal natural circulation and linear stability

Measurement of optical bandgap energies of semiconductors

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