• Growth and Guidance: A Study of Neuron Morphology and How it is Modified by Fractal and Euclidean Electrodes In Vitro. 

  Rowland, Conor (University of Oregon, 2023-07-06)

  For well over a century, neuroscientists have been studying the inherent ties between neuronal morphology and functionality. Santiago Ramón y Cajal, in his work that ultimately awarded him a Nobel Prize in 1906, established ...
• Direct Experimental Observation of 3D Vortex States in Multilayer Fe/Gd using Scanning Electron Microscopy with Polarization Analysis (SEMPA) 

  Moraski, Rich (University of Oregon, 2023-07-06)

  The global market for power solely for data center usage is estimated to be $12.4 billion by 2027[1]. In 2021, data center electricity consumption was ∼400 TW h, representing almost 2% of the global energy demand[2]. Ongoing ...
• Two Searches for Signals of Dark Matter with the ATLAS Detector in 139 ifb of LHC $\sqrt{s}$ = 13 TeV Proton-Proton Collision Data 

  Gledhill, Galen (University of Oregon, 2023-03-24)

  This dissertation presents two searches for signals of dark matter in an integrated luminosity of 139 ifb of proton-proton collision data collected at a center of mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS detector ...
• Developing a Platform for cQED Studies of Silicon Vacancy Centers in Diamond within the Good-Cavity Limit 

  Pauls, Abigail (University of Oregon, 2023-03-24)

  Silicon vacancy centers (SiVs) in diamond are local defects in the diamond lattice that behave as atomic-like systems with electronic energy levels and optical transitions. The SiV's optical properties and long spin ...
• Nonlinear Light-Matter Interactions with Entangled Photons and Bright Squeezed Vacuum 

  Landes, Tiemo (University of Oregon, 2023-03-24)

  We investigate the role of time-frequency entanglement in nonlinear interactions of both low- and high-gain broadband squeezed vacuum. Our work is motivated by the large body of research proposing the use of time-frequency ...
• Quantum and Semiclassical Calculations of Cavity QED Spectra 

  Tian, Liguang (1994-06)

  In this dissertation we study the interaction of a single atom with a single mode of the electromagnetic field in an optical cavity. We emphasize strong coupling conditions, where the dipole coupling strength is larger ...
• Investigating Multi-Species Interactions and Spatial Structure of Gut-Bacterial Communities using Live Imaging 

  Sundarraman, Deepika (University of Oregon, 2022-10-26)

  Animal intestines harbor hundreds of microbial species that play a crucial role in host health and development. Despite their importance, many questions about the rules that govern community assembly in these complex ...
• Environmental Noise in Gravitational Wave Detectors and the Search for Gravitational Wave Signals Associated with Gamma-Ray Burst During LIGO'S Third Observing Run 

  Nguyen, Philippe (University of Oregon, 2022-10-26)

  This dissertation describes methods used for characterizing the sources and effects of environmental noise in Advanced LIGO detectors from the end of the second LIGO-Virgo observing run through the end of the third observing ...
• A Search for Emerging Jets in the Dijet Invariant Mass Spectrum Using 139 ifb of Proton-Proton Collision Data at a Center-Of-Mass Energy of 13 TeV With the ATLAS Detector 

  Kilgallon, Aaron (University of Oregon, 2022-10-26)

  A search for emerging jets in the dijet topology is presented here using 139 ifb of √s = 13 TeV Run 2 ATLAS proton-proton collision data. Emerging jets constitute a class of dark jet models that have long-lived hadronization ...
• Hidden Dark Sectors: Jet Substructure and Effective Field Theories 

  Doss, Joel (University of Oregon, 2022-10-04)

  The search for physics beyond the Standard Model is a daunting task. As parameter spaces for compelling models shrink, there is motivation for more radical concepts. However, there is a need for understanding the structure ...
• Real-time Bayesian Estimation and Feedback Control with a Nitrogen Vacancy Center in Diamond 

  Turner, Ethan (University of Oregon, 2022-10-04)

  Quantum sensing utilizes the sensitivity of a quantum system to a given physical quantity in order to derive an estimate for that physical quantity. Nitrogen vacancy (NV) centers in diamond have emerged as a popular quantum ...
• Baryons in the Intergalactic Medium: A Hubble Spectroscopic Legacy Archive Search 

  Brunnenmeyer, Trevor (University of Oregon, 2022-10-04)

  Galaxies are not closed systems but are constantly interacting with their environment which generally contains a) other nearby galaxies and b) some form of warm gaseous medium existing between galaxies (known as the ...
• A Reservoir of Timescales in Random Neural Network 

  Istrate, Nicolae (University of Oregon, 2022-10-04)

  The temporal activity of many biological systems, including neural circuits, exhibits fluctuations simultaneously varying over a large range of timescales. The mechanisms leading to this temporal heterogeneity are yet ...
• Interaction-free measurements with electrons 

  Turner, Amy (University of Oregon, 2022-10-04)

  Quantum-enhanced electron imaging promises highly efficient, low-damage transmission electron microscopy, transforming high-resolution imaging of samples affected by beam irradiation. One proposed quantum protocol for ...
• Time-Frequency Entangled Two-Photon States and Measurements 

  Merkouche, Sofiane (University of Oregon, 2022-10-04)

  Quantum entanglement is arguably the one feature that decisively distinguishes quantum from classical physics, and thus plays a crucial role both in understanding the fundamental nature of reality, and in providing advantages ...
• On a Spectral Method for Calculating the Electrical Resistivity of a Low Temperature Metal from the Linearized Boltzmann Equation 

  Amarel, James (University of Oregon, 2022-05-10)

  While it is well known that transport equations may be derived diagrammatically, both this approach and that of Boltzmann inevitably encounter an integral equation that both is difficult to solve and, for the most part, ...
• Jamming: Marginal Stability and Thermodynamic Rigidity 

  Dennis, Robert (University of Oregon, 2022-02-18)

  This dissertation marks a significant step forward in fully understanding glasses and jammed materials as we unify the concept of marginality in amorphous systems, definitively resolve the jamming threshold problem, create ...
• Using Force Networks to Better Understand Granular Materials 

  sartor, james (University of Oregon, 2022-02-18)

  Force networks are an essential element to understanding the behaviors of jammed packings. As such, the Force Network Ensemble was formulated to describe the space of all possible force networks for a packing. In this work ...
• Hamiltonian Formulation For Single/few Photon Detection 

  Biswas, Saumya (University of Oregon, 2022-02-18)

  Fully quantum mechanical models for device models of single photon detectors have recently been developed. Detection of single/few photons in both inanimate devices and biological eyes have the universal structure of ...
• Non-Axisymmetric Instabilities in Self-Gravitating Star-Disk Systems: Bifurcation of Rapidly Rotating Protostars 

  Tumblin, Rebecka (University of Oregon, 2021-11-23)

  The nonlinear evolution of three-dimensional protostars surrounded by circumstellar disks are numerically investigated to understand the conditions under which short-period binary star systems could form and to probe ...

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