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Filtering by: Creator Kearsley, Anthony J. Remove constraint Creator: Kearsley, Anthony J. Committee Member Schneider, Guenter Remove constraint Committee Member: Schneider, Guenter

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  • The optical properties of multi-scale plasmonic structures and their applications in optical characterization and imaging

    Creator:
    Kuhta, Nicholas Anthony
    Abstract:
    The optical response of metallic structures is dominated by the dynamics of their free electron plasma. Plasmonics, the area of optics specializing in the electromagnetic behavior of heterogeneous structures with metallic inclusions, is undergoing rapid development, fueled in part by recent progress in experimental fabrication techniques and novel theoretical approaches....
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Nicholas Anthony Kuhta for the degree

  • Quantum and Classical Simulation of Electronic Transport at the Nanoscale

    Creator:
    Gruss, Daniel S.
    Abstract:
    Time-dependent electronic transport is increasingly important to the state-of-the-art device design and fabrication. The development of nanoscale sensing, the harnessing and control of structural fluctuations, and the advancement of next-generation materials all require a treatment of quantum dynamics beyond the level of traditional methods and a more nuanced approach to...
    Resource Type:
    Dissertation

  • Optoelectronic properties of organic semiconductor materials : from bulk to single molecule

    Creator:
    Shepherd, Whitney E. B.
    Abstract:
    The behavior and application of organic semiconductor materials depend strongly on their molecular structure, and molecular interactions. Several studies of intermolecular interactions in functionalized polyacene materials are presented. The degree and onset of aggregation of a functionalized anthradithiophene derivative was studied as a function of concentration in two different host...
    Resource Type:
    Dissertation

  • Electronic and Optical Properties of Organic Semiconductors : Experiment and Simulation

    Creator:
    Johnson, Brian
    Abstract:
    The continued development of organic semiconductor materials relies on an understanding of the relationship between optoelectronic properties, molecular structure, and molecular interaction. Several detailed studies of electronic properties in functionalized polyacene materials are presented. A computational model which allows the extraction of charge generation and transport properties from experimental data...
    Resource Type:
    Dissertation
    Full Text:
    been found.65 In the hopping transport framework, the rate of hopping from site i to site j is given

  • Photophysics of organic semiconductors at the nanoscale

    Creator:
    Grollman, Rebecca R.
    Abstract:
    Organic semiconductors are used in a wide variety of applications including transistors,solar cells, and light emitting diodes. These materials are solution-processable,low cost, and tunable. Many successful organic optoelectronic materials utilizeblends of several types of molecules (such as donors and acceptors) in order topromote charge generation. As blends are an inherently...
    Resource Type:
    Dissertation

  • Existence of Eta-Quotients for Squarefree Levels and Modular Type Supercongruences for Hypergeometric Functions

    Creator:
    Allen, Michael
    Abstract:
    In this dissertation, we consider two problems in number theory, both relating to modular forms. First we consider when a given modular form can be expressed as a quotient in Dedekind's $\eta$ function. Rouse and Webb \cite{RW} have determined the integers $N \leq 500$ such that the graded ring of...
    Resource Type:
    Dissertation
    Full Text:
    all i ̸= j, and at least one pi ≡ 5 (mod 24)  . (2.2) Our first result classifies spaces

  • On the photoresponse of several novel oligoacene and anthradithiophene derivatives

    Creator:
    Day, Jonathan
    Abstract:
    The results of an investigation into carrier dynamics in several novel functionalized and solution-processable pentacene and anthradithiophene derivatives are reported. Measurements were made of real-time photoresponse of polycrystalline thin films of these materials to ultrafast laser pulses, on picosecond to microsecond time-scales, as well as measurements of dark current and...
    Resource Type:
    Dissertation
    Full Text:
    Functionalized pentacene-pendant structure: Pc-TIPS. From J. S. Brooks et al23

  • Mathematical treatment and simulation of methane hydrates and adsorption models

    Creator:
    Medina, Francis Patricia
    Abstract:
    In this dissertation we develop mathematical treatment for two important applications: (i) evolution of methane in coalbeds with the associated phenomena of adsorption, and (ii) formation of methane hydrates in seabed. We use simplified models for (i) and (ii) since we are more interested in qualitative properties of the solutions...
    Resource Type:
    Dissertation
    Full Text:
    accretive, let fj ∈ ∂Ψ(uj) for j = 1, 2. Then, (f1, u2 − u1)H ≤ Ψ(u2)−Ψ(u1), (2.2) (f2, u1 − u2)H ≤ Ψ(u1

  • Analysis of domain decomposition methods for the simulation of charge transport in semiconductor structures with heterojunctions

    Creator:
    Costa, Timothy B.
    Abstract:
    Charge transport in a semiconductor structure with heterojunction is described by a multiscale partial differential equation model. This model can be used, e.g., for the design of more efficient solar cells. Phenomena at the heterojunction must be resolved at the angstrom scale while the size of the device is that...
    Resource Type:
    Masters Thesis
    Full Text:
    . Additionally, thanks to my brother, Anthony, for many productive conversations on science and applied

  • The Formation of Astrophysical Dust

    Creator:
    Mauney, Christopher M.
    Abstract:
    The formation of carbonaceous and silicate precursor molecules to astrophysical dust grains is investigated. Using density functional theory (DFT) in combination with global optimization techniques, the ground-state binding energies of dust precursors are determined. These results are employed in atomistic nucleation theory (ANT) to predict the critical size and nucleation...
    Resource Type:
    Dissertation
    Full Text:
    . Stephen Reynolds, Dr. Eric Lentz, and Dr. Anthony Mezzacappa. I would also thank Dr. David Fallest, Dr