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Filtering by: Creator Prior, D. Remove constraint Creator: Prior, D. Academic Affiliation Physics Remove constraint Academic Affiliation: Physics Degree Level Bachelor's Remove constraint Degree Level: Bachelor's

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  • The contact value approximation to the pair distribution function for an inhomogeneous hard sphere fluid

    Creator:
    Lurie-Gregg, Paho
    Abstract:
    We construct the contact value approximation (CVA) for the pair distribution function, g(²)(r₁, r₂), for an inhomogeneous hard sphere fluid. The CVA is an average of two radial distribution functions, which each take as input the distance between the particles, |r₂ −r₁|, and the average value of the radial distribution...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    simulations that we have developed and run as well as to two prior approximations to the pair distribution

  • 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
    Full Text:
    without relying on any prior knowledge of the metric or symmetries. The papers which discuss this are

  • Modelling Gravitationally Coupled Modes of High Stellar Mass Protostellar Star-Disk Systems

    Creator:
    Ahmed, Aneeq
    Abstract:
    We computationally modeled protostellar star-disk systems with star to disk mass ratio of 10. Our computational models looked at the development of density perturbations in these systems for different geometries of the system. The ratio of the star’s height and radius (rₚ/rₑ) is varied between 0.1746 and 0.88095. We modeled...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    the gravitational potential energy. Prior research tells us that stellar barlike modes are unstable

  • 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
    Full Text:
    and highlight the need for numerical optimization of each cavity structure prior to fabrication. 3

  • Photodimerization of Organic Semiconductors in the Strong Coupling Regime

    Creator:
    Puro, Richard
    Abstract:
    Organic semiconducting materials have emerged in the last few decades as viable alternatives to inorganics in broad applications from field effect transistors to LEDs to solar cells. Organics provide many benefits over inorganics such as flexibility, sustainability, and reduced cost. However, these materials are more susceptible to degradation in the...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    tetracene, had been observed exclusively prior to this report. Optical properties and chemical structure

  • Fungal Photonics

    Creator:
    Spafford, Jasper
    Abstract:
    The spalting fungus Scytalidium cuboideum secretes a red pigment that produces naphthoquinonic crystals that are a photonic material candidate. The molecule can pack together in different configurations resulting in amazingly different optical properties. I developed a procedure (slowly evaporating the solvent) to preferentially grow two of these configurations, which have...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    ............................................................................................................................................3 Prior red pigment knowledge

  • Optoelectronic Properties of a Novel Fungi-derived Pigment

    Creator:
    Wiesner, Cameron
    Abstract:
    In industry, there is considerable interest in finding sustainable, renewable materials for use in electronic devices. Pigments derived from spalting fungi are of particular interest due to their longevity in diverse environmental conditions. The focus of my project was to characterizethe properties of a novel, fungi-derived pigment, and to discover...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    due to relaxation from a higher vibrational level to the 0 vibrational level prior to transition

  • Exploiting Diffraction Orders from a Phase Limited SLM to Remove and Model Zernike Aberrations

    Creator:
    Goschie, Aaron J.
    Abstract:
    Using a plastic bottle, we explore the capabilities of a reflective phase-only Spatial Light Modulator (SLM) in removing wavefront aberrations using a Zernike polynomial phase mask, with the modulators phase depth limited to 0.8π radians. Wavefront aberrations, which can be modeled with Zernike polynomials, distort image transmission through various optical...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    Aberration 5 C. Zernike Polynomials and Aberrations 6 D. Objective 8 II. Theory 10 A. Blazed Grating and

  • Characterizing a Coupled Photodiode-LED System for Neuro-Sensing Applications

    Creator:
    Stevens, Gregg
    Abstract:
    I investigate the feasibility of a micron-sized biosensor designed to measure neural activity. The circuitry of the biosensor is composed of graphene, some photodiodes, and a light-emitting diode. Many of these biosensors would be injected into a subject’s brain, and when powered by near-infrared light, they would glow in response...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    ...................................................................................................................... 5 1.3 Prior Research

  • Terahertz field enhancement in nanoantennas on gallium arsenide

    Creator:
    Brequigny, Victor
    Abstract:
    Terahertz (THz) spectroscopy is a great tool not only to study fundamental physical processes such as many-body Coulomb interaction but also to develop ultrafast electronic devices. More specifically, intense THz fields interacting with semiconductors have exhibited strong nonlinear effect involving extreme carrier dynamics. In this experiment, intense THz radiation was...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    l1 = 60µm, and w = 200nm. The thickness of the gold layer is d = 100nm and the thickness of the