Index Catalog // ScholarsArchive@OSU

Investigating Grain Boundaries in BaCuS1-xSexF Using Impedance Spectroscopy

Creator:: Horgan, Briony
Abstract:: Impedance spectroscopy is a method of modeling materials with equivalent circuits to determine electrical properties, such as the resistivity and the dielectric constant. We explore impedance spectroscopy, both theoretically and experimentally through applying the method to samples of BaCuS1-xSexF. Grain boundary effects were dominant in the results, and although they...
Resource Type:: Undergraduate Thesis

Neutron Capture Cross Sections of Cadmium Isotopes

Creator:: Gicking, Allison
Abstract:: The neutron capture cross sections of ¹⁰⁶Cd, ¹⁰⁸Cd, ¹¹⁰Cd, ¹¹²Cd, ¹¹⁴Cd and ¹¹⁶Cd were determined in the present project. Four different OSU TRIGA reactor facilities were used to produce redundancy in the results and to measure the thermal cross section and resonance integral separately. When the present values were compared...
Resource Type:: Undergraduate Thesis

Use of a digital micromirror array as a configurable mask in optical astronomy

Creator:: Gilliam, Shawn
Abstract:: High resolution images of a dim companion in a binary star system can be obtained using a Digital Micromirror Array (DMA) as an optical mask. Imaging can be problematic because the intense light from the main star can saturate the detector and leave the companion unnoticed. Placement of the DMA...
Resource Type:: Undergraduate Thesis

Calibration of Laser Induced Fluorescence Thermometry using 2'7' Dichlorofluorescein and Sulforhodamine B

Creator:: Ulbricht, Jaryd and Narayanan, Vinod
Abstract:: An apparatus and method for calibrating planar laser induced fluorescence using a two-dye, two-color method was developed. A laser sheet was expanded from a 473 nm laser to excite dye solutions into higher energy states then fluoresced through spontaneous emission. The two fluorescent dyes selected for research and development were...
Resource Type:: Undergraduate Thesis

Discrete-time quantum walk with two-step memory

Creator:: Jones, Christopher
Abstract:: We examine a discrete-time quantum walk with two-step memory for a particle on a one- dimensional infinite space. The walk is defined with a four-state memory space analogous to the two-state coin space commonly used in discrete time quantum walks, and a method is presented for calculating the time evolution...
Resource Type:: Undergraduate Thesis

Measuring Neutron Absorption Cross Sections of Natural Platinum via Neutron Activation Analysis

Creator:: Petersen, Nicholas
Abstract:: This thesis presents a measurement of the resonance integral and thermal cross section – which together represent the total neutron absorption cross section – of the naturally occurring isotopes of platinum that emit gamma radiation upon neutron absorption. The measurements were made via neutron activation analysis. Platinum samples were bombarded...
Resource Type:: Undergraduate Thesis

Optical Tweezer Trapping of Colloidal Polystyrene and Silica Microspheres

Creator:: Peters, Kyle C.
Abstract:: Optical trapping is a tool used throughout a wide variety of disciplines rang- ing from precisely probing and manipulating sub-micron organisms in biol- ogy to analyzing fundamental charge transfer in colloidal physics. This thesis presents research involving optical tweezer force measurements of polystyrene and silica microspheres. In addition, preliminary work...
Resource Type:: Undergraduate Thesis

Measuring Low Intensity Light Reflections of High Temperature CO₂ Adsorbed on SiO₂ Near Brewster's Angle

Creator:: Ferron, Thomas J.
Abstract:: This investigation expands on earlier methods of using surface polarization reflection (SPR) to characterize the first few monolayers of a surface. Past research measured intensities of light reflecting off an SiO₂ optical flat inside a vacuum. Pressure of applied gas was changed to view a change in reflection. In an...
Resource Type:: Undergraduate Thesis

Min protein oscillations in E. Coli

Creator:: Zeto, Rene
Abstract:: The Min protein system in Escherichia coli helps the cell division process by identifying the center of the cell [1, 7]. This system has been modeled succesfully computationally under standard conditions. There has been recent experimental interest in the cell division process for signiﬁcantly perturbed cell shapes. We take the...
Resource Type:: Undergraduate Thesis

Measurement and Modeling of Zinc Sulfide Thin Films using Ellipsometry and Reflection Spectroscopy : A Comparison of Optical Characterization Techniques

Creator:: Kratzer, Aaron and Kratzer, Aaron C.
Abstract:: Zinc sulfide thin films on silicon wafers were analyzed for layer thickness, refractive index, and absorption using reflection spectroscopy (RS), spectroscopic ellipsometry (SE), and modeling programs. RS and refractive index values from literature were used to model film thickness based on reflection and the SCOUT modeling program was used to...
Resource Type:: Undergraduate Thesis

ScholarsArchive@OSU

Investigating Grain Boundaries in BaCuS1-xSexF Using Impedance Spectroscopy

Neutron Capture Cross Sections of Cadmium Isotopes

Use of a digital micromirror array as a configurable mask in optical astronomy

Calibration of Laser Induced Fluorescence Thermometry using 2'7' Dichlorofluorescein and Sulforhodamine B

Discrete-time quantum walk with two-step memory

Measuring Neutron Absorption Cross Sections of Natural Platinum via Neutron Activation Analysis

Optical Tweezer Trapping of Colloidal Polystyrene and Silica Microspheres

Measuring Low Intensity Light Reflections of High Temperature CO₂ Adsorbed on SiO₂ Near Brewster's Angle

Min protein oscillations in E. Coli

Measurement and Modeling of Zinc Sulfide Thin Films using Ellipsometry and Reflection Spectroscopy : A Comparison of Optical Characterization Techniques

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