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  • Mode patterns in quadrupole resonator with anisotropic core

    Creator:
    Thongrattanasiri, Sukosin
    Abstract:
    This thesis deals with applications of uniaxial anisotropic crystals for microcavity resonators with partially chaotic underlying ray dynamics. We develop an implementation of the scattering matrix formalism, and relate the eigenvalues and eigenvectors of the scattering matrix to the field distribution of inside the system. Using the developed technique, we...
    Resource Type:
    Masters Thesis
    Full Text:
    type the horizontal axis. s of aces. is aligned parallel to the optical axis, and surf zk 7

  • BaCuChF (Ch = S, Se, Te) p-type transparent conductors

    Creator:
    Zakutayev, Andriy
    Abstract:
    BaCuChF (Ch = S, Se, Te) materials are chalcogen-based transparent conductors with wide optical band gaps (2.9 – 3.5 eV) and a high concentration of free holes (10¹⁸ – 10²⁰ cm⁻³) caused by the presence of copper vacancies. Chalcogen vacancies compensate copper vacancies in these materials, setting the Fermi level...
    Resource Type:
    Dissertation
    Full Text:
    : BaCuChF (Ch = S, Se, Te) p-type Transparent Conductors Abstract approved

  • Evaluation of amorphous oxide semiconductors for thin film transistors (TFTs) and resistive random access memory (RRAM) applications

    Creator:
    Rajachidambaram, Jaana Saranya
    Abstract:
    Thin-film transistors (TFTs) are primarily used as a switching element in liquid crystal displays. Currently, amorphous silicon is the dominant TFT technology for displays, but higher performance TFTs will become necessary to enable ultra-definition resolution high-frequency large-area displays. Amorphous zinc tin oxide (ZTO) TFTs were fabricated by RF magnetron sputter...
    Resource Type:
    Masters Thesis
    Full Text:
    : Gregory S. Herman ABSTRACT Thin-film transistors (TFTs) are primarily used as a switching element in

  • Hydrogen/deuterium exchange mass spectrometry as a technology platform for studying conformational dynamics in large protein complexes

    Creator:
    Nirudodhi, Sasidhar N.
    Abstract:
    Proteins are essential to all biological systems. Proteins participate in numerous cellular processes by interacting with other proteins, other metabolites and membranes in a dynamic environment. Studying the structural and conformational properties of proteins in the solution phase is necessary to understand their protein folding and interaction dynamics. This research...
    Resource Type:
    Dissertation
    Full Text:
    Conformational Dynamics in Large Protein Complexes Abstract approved: Claudia S. Maier Proteins are essential

  • Total Synthesis of Isotopologues of Xanthohumol and its Congeners for Biological Studies

    Creator:
    Plagmann, Layhna S.
    Abstract:
    Xanthohumol [XN, (E)-6´-methoxy-3´-(3-methylbuten-2-yl)-2´,4´,4´´-trihydroxychalcone], the principal prenylated chalcone from hops, and its 2,3-dihydro- (DXN) and O6-desmethyl-2,3-dihydro- (DDXN) congeners, are of potential utility for the amelioration of metabolic syndrome; however, their complex bioactivity profiles cannot be properly studied and understood without access to appropriately produced synthetic materials. In the first part of...
    Resource Type:
    Masters Thesis
    Full Text:
    prenylflavonoid from hops, Duncan C. Ellinwood, Mohamed F. El‐Mansy, Layhna S. Plagmann, Jan F. Stevens

  • Analysis of the mechanism of sulfoxide-lithium exchange and the reactive intermediate in stereospecific reagent-controlled homologation (StReCH)

    Creator:
    Hoyt, Amanda
    Abstract:
    The stereospecific reagent-controlled homologation (StReCH) of boronic esters with enantioenriched carbenoid species generated in situ by the addition of organolithium initiators to stereodefined α-chloroalkyl aryl sulfoxides was previously reported. The reaction of an organolithium with an α-chloroalkyl aryl sulfoxide ostensibly generates an α-chloroalkyllithium via sulfoxide-lithium exchange; however, the true nature...
    Resource Type:
    Masters Thesis
    Full Text:
    ), 2.73 (3H, s) ppm; 13C NMR (700 MHz, CDCl3)  31 145.9 (0), 131.2 (1), 129.6 (2C, 1), 123.8 (2C

  • Electronic and Optical Properties of Defects in Amorphous Oxide and Transition Metal Dichalcogenide Semiconductors

    Creator:
    Vogt, Kyle
    Abstract:
    The optical and electronic properties of amorphous oxide thin films depend crucially on chemical composition, and deposition process variations which give rise to sub-gap defect states. Consequently, there is a need for a reliable, high-throughput method to extract sub-gap defect densities of states in amorphous oxide thin films. We present...
    Resource Type:
    Dissertation
    Full Text:
    electron (hole) mobility of only 0.129 (0.031) cm2 V-1 s-1; nonetheless, efficient photocarrier

  • Total synthesis of sparteine alkaloids from a common tetraoxobispidine intermediate

    Creator:
    Melbardis, John
    Abstract:
    In previous work (Blakemore et al. Org. Lett. 2005, 7, 4721; Heterocycles 2006, 70, 609), successful elaborations of the lupine alkaloids (±)-α-isosparteine (dl-2) and (±)-β-isosparteine (dl-3) were realized from a common tetraoxobispidine precursor, 3,7-diallyl -2,4,6,8-tetraoxo-3,7-diazabicyclo[3.3.1]nonane (93). Herein, the tetraoxobispidine approach to lupine alkaloids was extended to a total synthesis of...
    Resource Type:
    Masters Thesis
    Full Text:
    (93) to hemiaminal 97……………... 39 2 Characterization data for the by-product(s) of

  • Cis-2,5-diaminobicyclo[2.2.2]octane : a novel C₂-symmetric scaffold for asymmetric catalysis

    Creator:
    Shaw, Subrata
    Abstract:
    This thesis describes the development of a new enantioselective synthetic method employing chiral cis-2,5-diaminobicyclo[2.2.2]octane-based organometallic catalysts. The significance of this new method to organic synthesis is illustrated with preparation of enantioenriched products that are transformed to important pharmaceutical agents. Chapter 1 provides a brief historical overview of asymmetric catalysis, especially...
    Resource Type:
    Dissertation
    Full Text:
    defects.3 It was later discovered that only the (S)- enantiomer of the drug is teratogenic. Since that

  • Synthesis and catalytic applications of derivatives of 7,7'-dihydroxy-8,8'-biquinolyl (azaBINOL)

    Creator:
    Wang, Chao
    Abstract:
    The synthesis of axially chiral polyfunctional derivatives of 8,8'-biquinolyl was explored and the catalytic action of appropriate derivative types investigated in three separate processes: (1) the silylcyanation of carbonyl groups and imines, (2) alkylation of a glycine Schiff-base via phase transfer-catalysis, and (3) direct amide bond formation from simple amines...
    Resource Type:
    Dissertation
    Full Text:
    synthesis of highly substituted 8,8´-biquinolyl In the 1980’s, a variety of methods were used to