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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

Description:: Dimensionally constrained material systems are at the forefront of current materials research because of their novel and often enhanced physical, chemical and biological properties. The dimensionality effects are pervasive through different classes of materials including ceramics, metals and polymers. Often times dimensionality effects are manifested as internal structure variations in...
Keyword:: Material Science and Engineering
Subject:: Materials Science and Engineering
Creator:: Suresh Kumar Donthu
Owner:: Scholarly Digital Publishing
Date Uploaded:: 08/27/2018
Date Modified:: 08/27/2018
Date Created:: 2007-12-06
Resource Type:: Dissertation

Description:: This thesis examines the effects of micro-alloying additions to Al-Sc alloys on the microstructure, coarsening resistance and creep properties. The overarching goal of this research is to develop castable, creep-resistant aluminum alloys which can be used at temperatures in excess of 300?C. Successful high-temperature application of aluminum based alloys offers...
Keyword:: Material Science
Subject:: Materials Science and Engineering
Creator:: Marsha Van Dalen
Owner:: Scholarly Digital Publishing
Date Uploaded:: 08/16/2018
Date Modified:: 08/16/2018
Date Created:: 2007-10-05
Resource Type:: Dissertation

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

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

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

Description:: Motivated by performance requirements of future medical stent applications, experimental research addresses the design of novel TiNi-based, superelastic shape-memory alloys employing nanoscale precipitation strengthening to minimize accommodation slip for cyclic stability and to increase output stress capability for smaller devices. Using a thermodynamic database describing the B2 and L21 phases...
Keyword:: Material Science and Engineering
Subject:: Materials Science and Engineering
Creator:: Matthew D. Bender
Owner:: Scholarly Digital Publishing
Date Uploaded:: 09/13/2018
Date Modified:: 09/13/2018
Date Created:: 2008-07-21
Resource Type:: Dissertation

Description:: In recent years, research has expanded the uses of triblock copolymer gels to a wide variety of applications including everything from ceramics processing to regenerative medicine and drug delivery. The research presented in this dissertation focuses on a physically crosslinked, block copolymers gel system in a selective solvent. This system...
Keyword:: Material Science and Engineering
Subject:: Materials Science and Engineering
Creator:: Rafael Edmundo Bras
Owner:: Scholarly Digital Publishing
Date Uploaded:: 09/13/2018
Date Modified:: 09/13/2018
Date Created:: 2008-06-23
Resource Type:: Dissertation

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