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  • Fabrication and characterization of p-type CuO / n-type ZnO heterostructure gas sensors prepared by sol-gel processing techniques

    Creator:
    Ravichandran, Ram
    Abstract:
    Increased interest in the field of sensor technology stems from the availability of an inexpensive and robust sensor to detect and quantify the presence of a specific gas. Bulk p-CuO/n-ZnO heterocontact based gas sensors have been shown to exhibit the necessary sensitivity and selectivity characteristics, however, low interfacial CuO/ZnO contact...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Thomas K. Plant Increased interest in the �eld of sensor technology stems from the

  • Fiber Bragg grating-tunable diode laser

    Creator:
    Ericksen, Doug
    Abstract:
    Continuously tunable diode laser sources coupled to single-mode fiber are useful sources for fiber Bragg grating (FBG) strain sensors. This paper describes the development and fabrication of such a device. An introduction is given describing applications of tunable lasers and some of the different methods of creating a tunable diode...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________ Thomas K. Plant Continuously tunable diode laser sources coupled to single-mode fiber

  • Fabrication and characterization of thin-film electromagnetic coils and heaters for microchannel applications

    Creator:
    Dehuff, Nicole L.
    Abstract:
    The focus of this thesis involves developing general fabrication processes relevant to the manufacture of two new devices for the Microscale technology Energy and Chemical Systems (MECS) program at Oregon State University. The two MECS devices developed, capture dots and transparent thin-film heaters (TTFHs), require unique process development for successful...
    Resource Type:
    Masters Thesis
    Full Text:
    . Plant The focus of this thesis involves developing general fabrication processes rele- vant to the

  • Electro-optic characterization of SrS-based alternating current thin-film electroluminescent devices

    Creator:
    Nevers, Corey A.
    Abstract:
    Two methods of electro-optically characterizing alternating-current thin-film electroluminescent (ACTFEL) devices are investigated: photo-induced transferred charge (PIQ) and luminescence (PIL), and subthreshold voltage-induced transferred charge (VIQ) techniques. Both techniques provide information related to traps within the phosphor layer. PIQ/PIL experiments monitor the transport of electrons and holes across the phosphor layer...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved- Thomas K. Plant Two methods of electro-optically characterizing alternating-current

  • Deep ultraviolet solid-state laser development

    Creator:
    Dutton, David A. (David Adam)
    Abstract:
    There is a new possibility of generating deep ultraviolet laser radiation from a solid-state source. With recent advances in material development, a new nonlinear optical crystal provides a greater damage threshold than current materials making higher conversion efficiencies possible. This thesis examines the possibility of using this crystal to generate...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: _____________________________________________________________________ Thomas K. Plant

  • The construction and computational modeling of a fiber Bragg grating tunable laser diode

    Creator:
    Winz, Michele W.
    Abstract:
    The widespread adoption of wavelength division multiplexing to increase the bandwidth of optical fiber communication systems has provided a major impetus for research on low cost, single-mode, wavelength stable tunable diode lasers for use in optical telecommunications due to the large volume of lasers required. Other applications, such as demodulation...
    Resource Type:
    Dissertation
    Full Text:
    Modeling ofa Fiber Bragg Grating Tunable Laser Diode. Abstract approved: Thomas K. Plant The widespread

  • Alternating-current thin-film electroluminescent device optical excitation experiments

    Creator:
    Cleary, Bradford A.
    Abstract:
    This thesis investigates two methods of optical excitation of alternating-current thin-film electroluminescent (ACTFEL) devices. The two experimental methods investigated in this thesis are the photo-induced charge (PIQ) and luminescence (PIL), and the subthreshold-voltage induced transferred charge (VIQ) techniques. PIQ/PIL experiments utilize an above-bandgap laser pulse to investigate the transport properties...
    Resource Type:
    Masters Thesis
    Full Text:
    - Thomas K. Plant This thesis investigates two methods of optical excitation of alternating-current thin

  • A fistful of Astragalus : phenotypic and genotypic basis of the most taxon rich species in the North American flora

    Creator:
    Knaus, Brian J.
    Abstract:
    The study of the infra-specific ranks (i.e., subspecies and variety) can be considered the study of the process of speciation. Astragalus lentiginosus Douglas ex Hooker (Fabaceae) is the most taxon rich species in the U.S. flora currently including 40 taxonomic varieties. These varieties were described using traditional taxonomic methods primarily...
    Resource Type:
    Dissertation
    Full Text:
    Brian J. Knaus for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

  • Exposure of ionic hyper-regulated artemia to chlorine – 36 in a marine system

    Creator:
    Shaw, Christopher Glenn
    Abstract:
    Chlorine – 36 (36Cl) is produced naturally, through neutron activation of stable chlorine during nuclear weapons detonation, or from neutron capture on residual chlorine in graphite piles. It has a half-life of 301,000 years and decays by the means of beta decay with an average energy of 236.33 keV. Due...
    Resource Type:
    Masters Thesis
    Full Text:
    
 
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  • Candidate Genes Associated with Blister Rust Resistance in Whitebark Pine (Pinus albicaulis) Revealed through de novo Transcriptome Assembly and Differential Gene Expression Analysis

    Creator:
    Bair, Zolton J.
    Abstract:
    Whitebark pine (Pinus albicaulis) is an iconic North American high-elevation tree species currently threatened by climate change, mountain pine beetle, and white pine blister rust (WPBR), a lethal disease caused by the non-native fungal pathogen Cronartium ribicola. In collaboration with the USDA Forest Service Dorena Genetic Resource Center, germplasm was...
    Resource Type:
    Dissertation
    Full Text:
    in Botany and Plant Pathology presented on March 15, 2017. Title: Candidate Genes Associated