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  • Platinum Nanoparticles in Transition Alumina: An Atomic Resolution Study of Interfaces

    Creator:
    Clauser, Arielle L.
    Abstract:
    The phases of transition alumina are scientifically interesting due to their high specific surface area, favorable acid/ base characteristics, and chemical and hydrothermal stability which make this metallic oxide a prime candidate for use as a support for metallic nanoparticles (NPs) in heterocatalysis. Interactions at alumina/Pt interfaces are important for...
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    Dissertation
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    applied to finely filter exhausts [1], manufacture petrochemicals [2], synthetic materials [3], convert

  • Novel Approaches to Porous Material Discovery

    Creator:
    Sturluson, Arni
    Abstract:
    Uses for materials with a large surface area and high porosity have grown sig-nificantly in recent years. Porous materials have found usage in applications such as separation, gas storage, sensing, purification and more, prompting researchers to find and discover numerous new porous materials to suit a specific purpose. Hundreds of...
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    Dissertation
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    Porous Material Discovery Abstract approved: Cory M. Simon Uses for materials with a large surface

  • 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...
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    Dissertation
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    : Joseph Davidson This dissertation presents novel, field-activated smart material systems for the ac

  • The Effect of Surface Finish on Ball Grid Array Lead Free Solder Joints

    Creator:
    Casali, Dick R.
    Abstract:
    As microelectronic parts trend smaller so do their solder joints. The surface finish on a copper pad is expected to become a significant part of the total solder joint volume and therefore affect mechanical properties of the smaller solder joints. Two sample geometries and four different surface finishes for tin-silver-copper...
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    Dissertation
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    the degree of Doctor of Philosophy in Materials Science presented on September 30, 2020. Title

  • Light soaking in metal-halide perovskites

    Creator:
    Watts, C. Lowell
    Abstract:
    Despite climate change requiring the cutback of fossil fuel consumption, the world continues to increase its energy demands each year. To meet the ambitious goals outlined during the Paris Agreement in 2015, which set a goal to limit global warming to 1.5°C [1], changes in energy production methods are necessary....
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    Dissertation
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    carrier concentration. Chapter 10 summarizes the presented material. References to cited materials

  • Potential Additive-Manufacturing of Ablative Thermal Protection Systems

    Creator:
    Hazell, Kenya K.
    Abstract:
    Electrodeposition is a versatile polymer deposition technique to create nano-microscale materials using an electrical field generated from a charged droplet of solution and a grounded collector. Electrospinning or electrospraying can occur during electrodeposition, leading to the creation of nanofibers or bead-like materials depending on the process parameters. Photopolymerization of the...
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    Dissertation
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    materials are applied.3,9 2.1.1 Ablative Mechanism Ablative TPS are an effective shielding material due

  • Chemistry of High-Resolution Organotin Patterning Materials

    Creator:
    Kenane, Nizan
    Abstract:
    Organotin clusters have attracted notable attention for use as inorganic photoresists. This dissertation discerns dimeric and dodecameric organotin clusters, [(n-C₄H₉Sn)(OH)(H₂O)Cl₂]₂ (Sn₂) and [(n-C₄H₉Sn)₁₂O₁₄ (OH)₆ ]+ (Sn₁₂), both of which are stable hydrolysis and condensation products of n-C₄H₉SnCl₃. This work identifies Sn₂ as a superior precursor choice for solution deposition of...
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    : Chemistry of High-Resolution Organotin Patterning Materials. Abstract approved

  • Crystallization and Growth of TiO2 Polymorphs from Pulsed Laser Deposited and RF-Sputtered, Amorphous Thin-Film Precursors

    Creator:
    Agirseven, Okan
    Abstract:
    TiO2 is a versatile wide bandgap transparent semiconducting oxide with three well known polymorphs: Anatase, Rutile and Brookite. These crystal structures are desired for many industrial applications mainly for their photocatalytic activity, oftentimes in thin-film form. Thin-film crystalline polymorphs of TiO2 are often made by physical vapor deposition on a...
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    Dissertation
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    literature: • “In materials science, polymorphism is the ability of a solid material to exist in more than

  • Atomic Layer Processing for Next-Generation Microelectronic Materials

    Creator:
    Holden, Konner E. K.
    Abstract:
    Atomic layer deposition (ALD) is an enabling technique for many new micro- and nanoscale technologies. The self-limiting surface chemical reactions by which ALD fundamentally operates give rise to uniquely high precision (atomic) control over deposited film thickness, uniformity over large areas, and conformality over complex and extreme topographies. One such...
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    Dissertation
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    , and C.H. Winter, ACS Applied Materials & Interfaces 10, 14200 (2018). 15 K.E.K. Holden, C.L

  • Predicting the Effect of Local Conditions on Metal-oxides: Pt/γ-Al₂O₃ Interface and Degradation of α-Cr₂O₃ Passive Film

    Creator:
    Oware Sarfo, Kofi
    Abstract:
    Metal-oxides are very important in industrial applications such as thermal barrier coatings, corrosion protection, and heterogeneous catalysis. The wide variety of applications for metal-oxides are derived from the array of properties of metal-oxides. It is, therefore, important to understand and predict the conditions of synthesis and operation to optimize the...
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    Dissertation
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    calculations of Pd/ZnO interface reported atomically flat interfaces of Zn and O termination of Pd/ZnO(0001