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  • Investigation of the Initial Stages of SiGe(001) Dry Thermal Oxidation Using Ambient-Pressure X-ray Photoelectron Spectroscopy

    Creator:
    Lorona, Shane P.
    Abstract:
    Ambient-pressure X-ray photoelectron spectroscopy has been used to study the initial stages of dry thermal oxidation of Si₀.₆₀Ge₀.₄₀(001) grown epitaxially on Si(001). Chemical state resolved AP-XPS was performed at temperatures up to 300 ˚C and O₂ pressures up to 1 mbar. Comparisons were made to Si(001) and Ge(001). The Si...
    Resource Type:
    Masters Thesis
    Full Text:
    ...................................................................................................................... 32 Chapter 2: Experimental Review of Ambient Pressure X-ray Photoelectron Spectroscopy ........ 36

  • Molecular origins of peptide entrapment in polyethylene oxide layers

    Creator:
    Wu, Xiangming
    Abstract:
    A more quantitative understanding of peptide entrapment and elution from otherwise protein-repellent polyethylene oxide (PEO) brush layers will provide direction for development of new strategies for drug storage and delivery. Here we describe criteria for peptide integration and structural change within the PEO brush, and discuss the reversibility of peptide...
    Resource Type:
    Dissertation
    Full Text:
    Molecular Origins of Peptide Entrapment in Polyethylene

  • Molecular origins of surfactant-mediated stabilization of protein

    Creator:
    Lee, Hyo Jin
    Abstract:
    Nonionic surfactants are commonly used to stabilize proteins during upstream and downstream processing and drug formulation. Surfactants stabilize the proteins through two major mechanisms: (i) their preferential location at nearby interfaces, in this way precluding protein adsorption; and/or (ii) their association with protein into "complexes" that prevent proteins from interacting...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on September 4, 2012 Title: Molecular origins of surfactant- mediated stabilization

  • Spherical Au Nanoparticle Interaction with Lipid Monolayers Probed with Sum Frequency Generation Spectroscopy

    Creator:
    Faase, Ryan A.
    Abstract:
    Nanoparticles have become more prevalent from their use in sunscreen to antimicrobial agents in socks. In light of these applications, gaining a fundamental understanding of how NPs interact with humans is crucial for their future. Specifically, how cells interact with NPs and what factors drive the modes of cellular uptake....
    Resource Type:
    Masters Thesis
    Full Text:
    alveolar macrophages. American journal of respiratory cell and molecular biology 1995, 12 (6), 676-683

  • Characterization of CoGe Thin Films and Powders

    Creator:
    Pfau, Andrew James
    Abstract:
    Cobalt germanides have been widely studied as semiconductor contact materials, but recent theoretical studies suggest that they may also be excellent catalysts for methane steam reforming with stabilities and activities comparable to noble metal catalysts. In order to study the catalytic activity of cobalt germanides, it is critical to first...
    Resource Type:
    Masters Thesis
    Full Text:
     edited the  manuscript. J. Trey Diulus assisted with the collection of X‐ray photoelectron spectroscopy

  • Design Principles of Transition Metal X-ide Catalysts for Electrochemical Oxygen Reduction and Evolution Reactions: In-Situ X-ray Spectroscopy Studies

    Creator:
    Wang, Maoyu
    Abstract:
    Hydrogen is the green fuel that can be produced from water through electrolysis and used via hydrogen fuel cells to generate electricity with zero carbon dioxide emission. The commercialization of electrolyzers and fuel cells is the critical step to achieving global carbon neutrality. However, it is severely hampered by the...
    Resource Type:
    Dissertation
    Full Text:
    spectroscopy, and density of function theory suggested that the Co9S8 would completely restructure to form

  • Characterization and Investigations of Thin-Film Materials with X-ray Photoelectron Spectroscopy

    Creator:
    Diulus, J. Trey
    Abstract:
    Surface characterization of materials is widely utilized over a range of disciplines and essential to the development of new materials, technology, or processes. Metal oxide nanoclusters have shown promise as potential new generation photoresist materials for extreme ultraviolet (EUV) nanolithography. Organotin clusters have been proposed as potential candidates for resist...
    Resource Type:
    Dissertation
    Full Text:
    : Characterization and Investigations of Thin-Film Materials with X-ray Photoelectron Spectroscopy Abstract

  • The mobilization of heavy metals from contaminated soil using low molecular weight organic acids

    Creator:
    Kang, Sun Ki
    Abstract:
    More than 30,000 potential Superfund sites have been identified. Heavy metals are contaminants at many of these Superfund sites. The average cost of cleanup a single-typical Superfund site currently stands at $20 million, and it is expected that the cost may escalate to $50 million within the next decade. Problems...
    Resource Type:
    Dissertation
    Full Text:
    Mobilization of Heavy Metals from Contaminated Soil Using Low Molecular Weight Organic Acids

  • Kinetic and molecular effects of sulfate reduction on a dechlorinating culture under chemostat growth conditions

    Creator:
    Berggren, Dusty Rose V.
    Abstract:
    Chlorinated ethenes are common groundwater contaminants that may be treated through in-situ bioremediation. Relationships between the reducing environment, available electron donors and acceptors, reaction kinetics, and microbial community composition must be further understood to successfully engineer remediation schemes in the complex subsurface environment. This thesis work investigated the effect of...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Kinetic and Molecular Effects of Sulfate Reduction on a Dechlorinating Culture under Chemostat

  • Amorphous In-Ga-Zn-O thin-film transistors fabricated by microcontact printing

    Creator:
    Du, Xiaosong, Frederick, Ryan T., Li, Yajuan, Zhou, Zheng, Stickle, William F., and Herman, Gregory S.
    Abstract:
    The authors present a facile, low-cost methodology to fabricate high-performance In-Ga-Zn-O (IGZO) bottom contact, bottom gate thin-film transistors (TFTs) by soft lithography. The IGZO channel and indium tin oxide (ITO) source and drain were patterned using microcontact printing of an octadecylphosphonic acid self-assembled monolayer (SAM). A polymer stamp was used...
    Resource Type:
    Article
    Full Text:
    -Ga-Zn-O thin-film transistors fabricated by microcontact printing. Journal of Vacuum Science