Index Catalog // ScholarsArchive@OSU

Aberration Correction of Optical Wavefronts with Sequential, Genetic, and Deep Learning Algorithms

Creator:: Weller, Jesse A.
Abstract:: In this work, we systematically explore the effectiveness of optical aberration correction over a wide range of optical depths using the Segmented and Zernike Polynomial bases. We manufacture a set of 16 optical phantom samples consisting of a clear polyester resin substrate embedded with varying concentrations of aluminum oxide (Al₂O₃)...
Resource Type:: Masters Thesis
Full Text:: Wavefronts with Sequential, Genetic, and Deep Learning Algorithms Abstract approved: David H. McIntyre In

Development of Diagnostic Assays for Race Differentiation of Podosphaera macularis

Creator:: Block, Mary H.
Abstract:: Hop powdery mildew (Podosphaera macularis) was confirmed in the Pacific Northwest in 1996. Before 2012, the most common race of P. macularis was able to infect plants that possessed powdery mildew resistance based on the R-genes Rb, R3, and R5. Post 2012, two additional races of P. macularis were discovered...
Resource Type:: Masters Thesis
Full Text:: approved: ______________________________________________________ David H. Gent Hop powdery

The Influence of Nitrogen Fertility on Hop Quality, Pest Management, and the Stability of Biological Control

Creator:: Iskra, Anne E.
Abstract:: A multi-year field study was conducted in Oregon and Washington to evaluate the influence of nitrogen fertilization rate and timing on cone quality, nitrate accumulation in cones, severity of powdery mildew (caused by Podosphaera macularis), arthropod pests, and the stability of conservation biological control of the twospotted spider mite (Tetranychus...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ David H. Gent A multi-year field study was conducted in Oregon and Washington to

Light Transmittance Properties of Biological Tissues of the Red-sided Garter Snake, Thamnophis sirtalis parietalis, Between 450 and 850 Nanometers

Creator:: Bixby, Eric M.
Abstract:: Using a spectrometer and photomultiplier tube, I measured the electromagnetic radiation transmittance properties of three types of tissue-- ventral skin, cardiac muscle, and liver tissue--in the red-sided garter snake Thamnophis sirtalis parietalis between the wavelengths of 450 and 850 nanometers (nm). Control readings were taken using a 10⁻² neutral density...
Resource Type:: Honors College Thesis
Full Text:: sirtalis parietalis, Between 450 and 850 Nanometers. Abstract approved: Dr. David H. Mcintyre Using

Applications of Holographic Optical Tweezers: Multiplexed Fluorescence Spectroscopy and the Micromechanics of Type-I Collagen

Creator:: Cibula, Matthew A.
Abstract:: The development and some applications of holographic optical tweezers (HOT) are presented. Our HOT system uses a spatial light modulator (SLM) to control the location and properties of the optical trap. We have developed a method for optimizing the diffraction efficiency of a SLM that can be applied in situ...
Resource Type:: Dissertation
Full Text:: Type-I Collagen Abstract approved: David H. McIntyre The development and some applications of

Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

Creator:: Wolfenbarger, Sierra N.
Abstract:: Podosphaera macularis, causal agent of hop powdery mildew, is known to produce cleistothecia (syn. chasmothecia) in eastern North America and Europe, but ascocarps are not reported from the Pacific Northwestern region of North America. Reasons for the apparent absence of cleistothecia in the Pacific Northwest are unknown. We established that...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ David H. Gent Podosphaera macularis, causal agent of hop powdery mildew, is known to

Measurement of optical bandgap energies of semiconductors

Creator:: Russell, Joshua A.
Abstract:: A method for bandgap energy determination using di use re ection is presented and compared to the traditional integrating sphere method. We have found the bandgap energies of ZnO, TiO₂, Cu₂O, Si, SnZrS₃, SnZrSe₃, Sn₂S₃, and BiCuOSe powders with both methods and found they agree within 0.03 eV. We have...
Resource Type:: Masters Thesis
Full Text:: Energies of Semiconductors Abstract approved: David H. McIntyre A method for bandgap energy

Applied Computing Techniques for Holographic Optical Tweezers

Creator:: Gruss, Daniel
Abstract:: Optical tweezers are capable of trapping micron sized particles through the transfer of the momentum of light. These capabilities are expanded through the use of computer controlled holograms for beam shaping. This hologram creation is facilitated through the use of a spatial light modulator, which is a liquid crystal device...
Resource Type:: Honors College Thesis
Full Text:: : _____________________________________________________ David McIntyre Optical tweezers are capable of trapping micron sized particles

The effect of transverse shifts on the LIGO interferometer (simulation study)

Creator:: Fettig, Doug J.
Abstract:: The LIGO interferometers have reached their designed sensitivity level which is greater than any other interferometer ever built. At this point, it is important to have a proper understanding of small perturbations that might still exist (until now these issues did not come to the forefront because other more critical...
Resource Type:: Honors College Thesis
Full Text:: Interferometer. Abstract approved: ____________________________________________ David McIntyre The LIGO

Optical Characterization of Transparent Conductive Thin Films

Creator:: Tucker, Derek A.
Abstract:: The optical characterization of transparent conductive thin films is demonstrated. The basics of transparency and conductivity, as they relate to transparent conductor research, are explained. A functional model of the reflectance and transmittance of a sample film, including interference fringes, is derived from the Fresnel electric field amplitude coefficients. The...
Resource Type:: Honors College Thesis
Full Text:: providing professional and academic advice. • Dr. David Mcintyre, Thesis advisor - For always providing

ScholarsArchive@OSU

Aberration Correction of Optical Wavefronts with Sequential, Genetic, and Deep Learning Algorithms

Development of Diagnostic Assays for Race Differentiation of Podosphaera macularis

The Influence of Nitrogen Fertility on Hop Quality, Pest Management, and the Stability of Biological Control

Light Transmittance Properties of Biological Tissues of the Red-sided Garter Snake, Thamnophis sirtalis parietalis, Between 450 and 850 Nanometers

Applications of Holographic Optical Tweezers: Multiplexed Fluorescence Spectroscopy and the Micromechanics of Type-I Collagen

Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

Measurement of optical bandgap energies of semiconductors

Applied Computing Techniques for Holographic Optical Tweezers

The effect of transverse shifts on the LIGO interferometer (simulation study)

Optical Characterization of Transparent Conductive Thin Films

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