Index Catalog // Arch : Northwestern University Institutional Repository

Effect of Water on Thermoelasticity of Majoritic Garnet: Implications for the Seismic Structure at the Top of the Lower Mantle

Description:: High-pressure and high-temperature laboratory experiments on the physical properties of mantle minerals provide a window into the Earth’s interior chemistry and geodynamics. The measurement of material density, compressibility, and elasticity at high P-T conditions provides thermoelastic parameters necessary to model seismic velocities in the Earth’s mantle at regional and global...
Keyword:: Material Science
Subject:: Earth and Planetary Sciences
Creator:: John Daniel Lazarz
Owner:: Scholarly Digital Publishing
Date Uploaded:: 04/03/2019
Date Modified:: 04/03/2019
Date Created:: 2018-01-01
Resource Type:: Dissertation

Modeling thin film oxide growth.

Description:: Thin film oxidation is investigated using two modeling techniques in the interest of better understanding the roles of space charge and non-equilibrium effects. An electrochemical phase-field model of an oxide-metal interface is formulated in one dimension and studied at equilibrium and during growth. An analogous sharp interface model is developed...
Keyword:: Material Science
Subject:: Materials Science and Engineering
Creator:: Quentin Sherman
Owner:: Scholarly Digital Publishing
Date Uploaded:: 01/09/2019
Date Modified:: 01/09/2019
Date Created:: 2017-01-01
Resource Type:: Dissertation

Multi-Contextual Representation and Learning with Applications in Materials Knowledge Discovery

Description:: Data mining for materials discovery is concerned with representing materials science problems into a statistical framework, and learning models that describe observations about the processing, structure, and property of materials. The type of materials includes metals, ceramics, glass, polymers, and composites which are mixtures of multiple types. Observations come from...
Keyword:: Material Science, Applications, and Computer Engineering
Subject:: Computer Engineering
Creator:: Ruoqian Liu
Owner:: Scholarly Digital Publishing
Date Uploaded:: 02/13/2018
Date Modified:: 02/13/2018
Date Created:: 2016-01-01
Resource Type:: Dissertation

Experiment-Driven Modeling of Plasmonic Nanostructures

Description:: Plasmonic nanostructures can confine light at their surface in the form of surface plasmon polaritons (SPPs) or localized surface plasmons (LSPs) depending on their geometry. SPPs are excited on nano- and micropatterned surfaces, where the typical feature size is on the order of the wavelength of light. LSPs, on the...
Keyword:: Modelling, Nano structures,, Plasmonic, and Material Science
Subject:: Material Science and Engineering
Creator:: Alexander John Hryn
Owner:: Scholarly Digital Publishing
Date Uploaded:: 02/13/2018
Date Modified:: 02/13/2018
Date Created:: 2016-01-01
Resource Type:: Dissertation

Formwork Pressure of Self-Consolidating Concrete: Influence of Flocculation Mechanisms, Structural Rebuilding, Thixotropy and Rheology

Description:: While self-consolidating concrete (SCC) may no longer be considered a "new concrete", there are still significant challenges to overcome before there is broader acceptance of SCC. One of these challenges concerns the formwork pressure exerted by SCC. A major advantage of SCC is the accelerated casting process due to the...
Keyword:: Material Science and Engineering
Subject:: Civil and Environmental Engineering
Creator:: Raissa Patricia Ferron
Owner:: Scholarly Digital Publishing
Date Uploaded:: 10/02/2018
Date Modified:: 10/02/2018
Date Created:: 2008-12-09
Resource Type:: Dissertation

Nanoscale Investigation of Platinum Nanoparticles on SrTiO3 Grown via Physical Vapor Deposition and Atomic Layer Deposition

Description:: This dissertation examines growth of platinum nanoparticles from vapor deposition on SrTiO3 using a characterization approach that combines imaging techniques and X-ray methods. The primary suite of characterization probes includes atomic force microscopy (AFM), grazing-incidence small-angle X-ray scattering (GISAXS), X-ray fluorescence (XRF), scanning electron microscopy (SEM), and X-ray absorption spectroscopy...
Keyword:: Material Science and Engineering
Subject:: Materials Science and Engineering
Creator:: Steven Christensen
Owner:: Scholarly Digital Publishing
Date Uploaded:: 10/01/2018
Date Modified:: 10/01/2018
Date Created:: 2008-12-08
Resource Type:: Dissertation

Self-Assembly of Organic Semiconductors and their Mineralization into Hybrid Nanostructures

Description:: This dissertation demonstrates how self-assembly can direct nanoscale ordering and optimize electronic properties of organic semiconductors, as well as organic-inorganic hybrids. In excitonic solar cells, controlling the ordering and interfaces between electron-transporting (n-type) and hole-transporting (p-type) domains is crucial. In addressing this challenge, hybrid nanostructures were designed by mineralization of...
Keyword:: Material Science and Engineering
Subject:: Materials Science and Engineering
Creator:: Marina Sofos
Owner:: Scholarly Digital Publishing
Date Uploaded:: 08/30/2018
Date Modified:: 08/30/2018
Date Created:: 2007-12-10
Resource Type:: Dissertation

Optical and Magneto-Optical Properties of Ferromagnetic InMnAs Thin Films and its Alloys

Description:: The optical and magneto-optical properties of the ferromagnetic semiconductors, InMnAs and its alloy InMnAsP were investigated to determine the band structure and nature of the ferromagnetism in these materials. Alloys were grown by metal-organic vapor phase epitaxy. Infrared absorption of InMnAs was investigated to determine the presence and properties of...
Keyword:: Material Science and Engineering
Subject:: Materials Science and Engineering
Creator:: Phillip Tang Chiu
Owner:: Scholarly Digital Publishing
Date Uploaded:: 05/22/2018
Date Modified:: 05/22/2018
Date Created:: 2007-04-18
Resource Type:: Dissertation

Examination and Mitigation of Electron Interception Processes in Dye-sensitized Solar Cells through Redox Shuttle and Photoelectrode Modification

Description:: With the dual challenges of meeting global energy demand and mitigating anthropogenic climate change, significant effort is being applied to generating power from renewable sources. The dye-sensitized solar cell (DSC) is a photovoltaic technology capable of generating electricity from sunlight, but suffers losses in efficiency due to deleterious electron transfer...
Keyword:: Alternative Energy, Material Science, and Physical Chemistry
Subject:: Chemistry
Creator:: William L. Hoffeditz
Owner:: Scholarly Digital Publishing
Date Uploaded:: 03/13/2018
Date Modified:: 03/13/2018
Date Created:: 2017-01-01
Resource Type:: Dissertation

Characterizing and Modeling Transient Photoconductivity in Amorphous In-Ga-Zn-O Thin Films

Description:: Amorphous In-Ga-Zn-O (a-IGZO) and other amorphous oxide semiconductors are attracting increasing attention from the display industry for their high electron mobility, ease of large-area manufacture, and potential for future flexible electronics. However, such amorphous materials often show instability under gate voltage bias, temperature, and illumination stress, with extremely slow relaxation...
Keyword:: Modelling, Material Science, Thin Films, and Photoconductivity
Subject:: Electrical Engineering
Creator:: Jiajun Luo
Owner:: Scholarly Digital Publishing
Date Uploaded:: 02/13/2018
Date Modified:: 02/13/2018
Date Created:: 2016-01-01
Resource Type:: Dissertation

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Effect of Water on Thermoelasticity of Majoritic Garnet: Implications for the Seismic Structure at the Top of the Lower Mantle

Modeling thin film oxide growth.

Multi-Contextual Representation and Learning with Applications in Materials Knowledge Discovery

Experiment-Driven Modeling of Plasmonic Nanostructures

Formwork Pressure of Self-Consolidating Concrete: Influence of Flocculation Mechanisms, Structural Rebuilding, Thixotropy and Rheology

Nanoscale Investigation of Platinum Nanoparticles on SrTiO3 Grown via Physical Vapor Deposition and Atomic Layer Deposition

Self-Assembly of Organic Semiconductors and their Mineralization into Hybrid Nanostructures

Optical and Magneto-Optical Properties of Ferromagnetic InMnAs Thin Films and its Alloys

Examination and Mitigation of Electron Interception Processes in Dye-sensitized Solar Cells through Redox Shuttle and Photoelectrode Modification

Characterizing and Modeling Transient Photoconductivity in Amorphous In-Ga-Zn-O Thin Films

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