Index Catalog // ScholarsArchive@OSU

Predicting the Percentage: Relating the Refractive Index to Effective Medium Theory in Combination Dielectric Films

Creator:: Farmer, Skylar
Abstract:: Transparent conductive oxides (TCO) are at the forefront of technology with their uses in touch screen phones and televisions, solar cells and more. Titanium dioxide and tin dioxide are two TCOs that have been studied in depth on their own, so to further explore these TCOs, this project focuses on...
Resource Type:: Undergraduate Thesis

Checking for Noise Model Consistency Between the NANOGrav 12.5- and 15-Year Data Sets

Creator:: Ashby, Andrew
Abstract:: The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) is an international collaboration that seeks to use perturbations in the time of arrivals of pulsar signals to detect gravitational waves in the nanohertz range of frequencies. The 15-year data set will be released as of June 2023. It is a...
Resource Type:: Undergraduate Thesis

Computational study of the structure of indium alloys at low temperatures using ab initio methods

Creator:: Shin, Hongsik (Jay)
Abstract:: Crystals are solid materials with periodic and symmetric molecular patterns. The structure of a crystalline solid determines its properties, making it essential to study its structures. From the principle of minimum energy, a crystal will choose a structure with the lowest free energy F = U – TS. At low...
Resource Type:: Undergraduate Thesis

Using the Langevin Equation to Verify a Single-Particle Brownian Motion Simulation

Creator:: Snyder, Brendan
Abstract:: Brownian motion is the movement of a particle in a fluid resulting from collisions with surrounding molecules. It has modern applications in simulating fluid dynamics and the motion of proteins in biophysics. Brownian motion simulations generally evolve the initial state by applying Newton’s second law to every particle. These simulations...
Resource Type:: Undergraduate Thesis

Time resolved terahertz spectroscopy of photocarrier dynamics in WSe2

Creator:: Johnson, Nathan
Abstract:: Semiconductors serve an integral role in our technologies today. However, with new advancements in ultra-fast electronics, we are approaching the fundamental speed limits of traditional silicon-based semiconductors. Silicon-based semiconductors typically exhibit photocarrier dynamics in nanosecond timescales. Transition metal dichalcogenides (TMDs) are 2D materials shown to exhibit photocarrier dynamics in picosecond...
Resource Type:: Undergraduate Thesis

Computational study of the electrostatic interaction between kinesin-5/BimC and the microtubule

Creator:: Chen, Zishi
Resource Type:: Undergraduate Thesis

Modeling optical reflection and electric field intensity in organic semiconductor microcavities

Creator:: Munk, Rebecca
Abstract:: Organic semiconductors are a promising alternative to the traditional inorganic semiconductors, such as silicon. Organics are solution-processable, low-cost, sustainable, and have interesting optoelectronic properties. One such property is the formation of exciton-polaritons, quantum quasi-particles formed by an electron-hole pair in the semiconductor and a photon. This process can be induced...
Resource Type:: Undergraduate Thesis

Interannual variability of oceanographic conditions on the continental shelf outside of Sermilik Fjord

Creator:: Glickman, Abbie A.
Abstract:: Freshwater flux from the Greenland Ice Sheet has the capacity to affect regional and global circulation as well as contribute to sea level rise. Outlet glaciers are an important part of this process. They provide pathways for inland glaciers and ice sheets to melt and drain into the surrounding oceans....
Resource Type:: Undergraduate Thesis

Early Prediction of Student Performance using Neural Networks: An exploratory study on the efficacy of a neural network model at predicting students’ final grades in a flipped classroom environment

Creator:: Bailey, Derrick
Abstract:: With the unique conceptual and mathematical backgrounds of every introductory physics student, there is no way to design a rigid curriculum that anticipates and meets every student’s needs. We can employ machine learning to explore the correlations that exist in the voluminous data from educational settings. That is, institutional, gradebook,...
Resource Type:: Undergraduate Thesis

The Two Wells System: A Benchmark for Monte Carlo Methods in Statistical Mechanics

Creator:: Sprueill, Henry
Abstract:: Computational statistical mechanics leans heavily on the class of Markov Chain Monte Carlo Algorithms. Many such algorithms exist, and simulations can run for several weeks, making the selection of algorithms a difficult, but critical task. In this work, we introduce a benchmark system of two quadratic wells with an analytical...
Resource Type:: Undergraduate Thesis

Characterizing Optical Signatures of TiO₂ Amorphous Precursors

Creator:: Berry, Patrick
Abstract:: TiO₂ typically crystallizes into three polymorphs: brookite, rutile, and anatase. The phase selection problem in TiO₂ is the lack of understanding what conditions cause amorphous TiO₂ to crystallize into one of its three polymorphs during an annealing process. It has been recently shown that phase selection in TiO₂ is highly...
Resource Type:: Undergraduate Thesis

Molecular Dynamics on REX-GECO1 Reveal Structural Features Governing Fluorescence

Creator:: Rozanov, Nikita
Abstract:: Fluorescent proteins have emerged as an essential toolset for bioimaging, creating a demand for engineering proteins with new and improved fluorescent properties. In this thesis, I explore the atomistic structure of REX-GECO1, a newly engineered protein biosensor that has unique optical properties. Since this protein has no available crystal structure,...
Resource Type:: Undergraduate Thesis

A Generalized Scheme for Creating Regge Calculus Models of General Relativity

Creator:: Hanson, Ben R.
Abstract:: Solutions to Einstein's equations are usually found by considering ideal, simplified models. However, if the real world always matched ideal physics models, then farmers would milk black and white spheres. To combat this, Regge calculus was developed as a numerical approximation scheme for general relativity. In Regge calculus curved manifolds...
Resource Type:: Undergraduate Thesis

Calculating characteristic timescales for environmental decoherence in the presence of thermal gravitons

Creator:: Nelson, Hunter
Abstract:: Different models show the effects of environmental decoherence on a quantum system due to various environments of interest. One important quantity within these models is the decoherence time, which tells us how quickly environments wash away the coherence of local measurements. We can describe this effect as the quantum system...
Resource Type:: Undergraduate Thesis

Scattering Mechanisms and Transport Properties of Semiconductors at Low Temperatures

Creator:: Kakepoto, Rohal
Abstract:: The purpose of this project is to verify scattering mechanisms in semiconductors by measuring transport properties and producing data that reflects existing research. The Hall effect is utilized to measure the resistivity, mobility and charge carrier concentration of the semiconductors: indium tin oxide (ITO), p-type silicon, and n-type silicon. By...
Resource Type:: Undergraduate Thesis

Development of a Brownian Motion Experiment for an Undergraduate Laboratory Course

Creator:: Wennstrom, Elena
Abstract:: A new class at Oregon State, PH 317: Experimental Physics, is designed to simulate a traditional laboratory research experience for undergraduate students. Several weeks of the class is devoted to Brownian motion experiments. Although this is a common topic for undergraduate lab classes, the experiment still needed some basic exploration...
Resource Type:: Undergraduate Thesis

Detecting Nanohertz Gravitational Waves by Searching for and Timing Millisecond Pulsars

Creator:: Nye, Brandon J.
Abstract:: Detecting gravitational waves is a topic at the forefront of physics. The first gravitational wave was detected by LIGO in 2015. This wave had a frequency in the 10s of Hz. This project is focused on detecting gravitational waves on the nanohertz spectrum using a pulsar timing array. This array...
Resource Type:: Undergraduate Thesis

Effect of Solar System Models on Pulsar Timing Experiments

Creator:: Nicolaysen, Cooper
Abstract:: Gravitational wave (GW) astronomy is a key ingredient in confirming Einstein’s theory of General Relativity and showing how the universe sends ripples through spacetime, distorting distances between two points. The confirmation of high-frequency GWs observed by The Laser Interferometer Gravitational-Wave Observatory (LIGO) in 2015 was a breakthrough in our understanding...
Resource Type:: Undergraduate Thesis

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

Optical Modelling of Thin Films: Applying Effective Medium Theory to Mixtures of TiO₂ and SnO₂

Creator:: Wulf, Julian J.
Abstract:: This study used SCOUT optical modelling software to create models of the reflectance and transmittance spectra generated by mixtures of titanium dioxide (TiO2) and tin oxide (SnO2). These models enabled identification of how altering the ratio of a mixture changes the optical response. By being able to identify how altering...
Resource Type:: Undergraduate Thesis

ScholarsArchive@OSU

Predicting the Percentage: Relating the Refractive Index to Effective Medium Theory in Combination Dielectric Films

Checking for Noise Model Consistency Between the NANOGrav 12.5- and 15-Year Data Sets

Computational study of the structure of indium alloys at low temperatures using ab initio methods

Using the Langevin Equation to Verify a Single-Particle Brownian Motion Simulation

Time resolved terahertz spectroscopy of photocarrier dynamics in WSe2

Computational study of the electrostatic interaction between kinesin-5/BimC and the microtubule

Modeling optical reflection and electric field intensity in organic semiconductor microcavities

Interannual variability of oceanographic conditions on the continental shelf outside of Sermilik Fjord

Early Prediction of Student Performance using Neural Networks: An exploratory study on the efficacy of a neural network model at predicting students’ final grades in a flipped classroom environment

The Two Wells System: A Benchmark for Monte Carlo Methods in Statistical Mechanics

Characterizing Optical Signatures of TiO₂ Amorphous Precursors

Molecular Dynamics on REX-GECO1 Reveal Structural Features Governing Fluorescence

A Generalized Scheme for Creating Regge Calculus Models of General Relativity

Calculating characteristic timescales for environmental decoherence in the presence of thermal gravitons

Scattering Mechanisms and Transport Properties of Semiconductors at Low Temperatures

Development of a Brownian Motion Experiment for an Undergraduate Laboratory Course

Detecting Nanohertz Gravitational Waves by Searching for and Timing Millisecond Pulsars

Effect of Solar System Models on Pulsar Timing Experiments

Investigating Grain Boundaries in BaCuS1-xSexF Using Impedance Spectroscopy

Optical Modelling of Thin Films: Applying Effective Medium Theory to Mixtures of TiO₂ and SnO₂

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search