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- Description:
- Renewable energy technology, more so than ever before, is critical to the survival of humanity. For decades, concentrated efforts into designing and developing such novel devices resulted in the innovation of solar-driven photovoltaics that were competitive with nonrenewable alternatives. This thesis explores the dynamic behavior of alternative material candidates that...
- Keyword:
- electronic, structural, perovskite, spectroscopy, two-dimensional, and nanomaterials
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Panuganti, Shobhana
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_1010644 and http://dissertations.umi.com/northwestern:16703
-
- Description:
- How molecular chirality manifests at the nano- to macroscale has been a scientific puzzle since Louis Pasteur discovered biochirality. In general, amphiphilic molecules can organize into a variety of assembly shapes including micelles, spherical vesicles, cylindrical micelles, and planar bilayers. However, when such amphiphilic molecules are chiral, helical ribbons, helicoidal...
- Keyword:
- self-assembly, soft mattter, electrostatics, membranes, chiral, and charge
- Subject:
- Physical chemistry, Physics, and Materials Science
- Creator:
- McCourt, Joseph
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16654 and etdadmin_upload_1000771
-
- Description:
- Light is a powerful tool for manipulating and probing magnetic states in solid state systems. In particular, optically-induced spin orientation, the ability to orient spin with polarized light, has been extensively utilized in low-dimensional III-V and II-VI semiconductors to pioneer spintronic research. Even though traditional semiconductors have found a wide...
- Keyword:
- Layered Semiconductors, Optical Spin Dynamics, Monochalcogenides, van der Waals Systems, and Magneto-optics
- Subject:
- Physics and Condensed matter physics
- Creator:
- Nelson, Jovan Julius
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_982678 and http://dissertations.umi.com/northwestern:16502
-
- Description:
- As polymer science has advanced as a field, so too have the uses for polymeric materials. We encounter polymers and plastics on a daily basis, and while their presence has greatly improved our quality of life, they have also had a profound and often negative impact on our environment. Plastic...
- Keyword:
- polyelectrolyte complex, random copolymer, enzymatic degradation, flocculation, nanoplastics, and chemical remediation
- Subject:
- Environmental science, Polymer chemistry, and Physics
- Creator:
- Wang, Jeremy
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16429 and etdadmin_upload_963641
-
- Description:
- This thesis focuses on exploring the explanatory and discovery potential of the four-neutrino and enhanced neutrino magnetic and electric dipole moments hypotheses when applied to the NOvA/T2K discrepancy and the XENON1T anomaly, respectively. Firstly, we study the effect of a very light (sub eV) sterile neutrino on the NOvA/T2K anom-...
- Keyword:
- Particles, Neutrinos, Physics, Phenomenology, Neutrino Magnetic Moment, and Sterile Neutrino
- Subject:
- Physics and Particle physics
- Creator:
- Jusino Sánchez, Giancarlo
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_985471 and http://dissertations.umi.com/northwestern:16558
-
- Description:
- A fundamental materials science question is “why and how will this material form?” The experimental,computation, and time resources necessary to answer this question consume significant resources due to the predominantly trial-and-error based approaches common in materials research. This dissertation reintroduces a number of fundamental thermodynamics-based tools for the study of...
- Keyword:
- Density Functional Theory, Aqueous Synthesis, Driving Force, Thermodynamics, Pourbaix Diagram, and Speciation
- Subject:
- Physics, Chemistry, and Materials Science
- Creator:
- Walters, Lauren Nichole
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16360 and etdadmin_upload_946544
-
- Description:
- Micro-X is a high-resolution X-ray spectroscopy sounding rocket mission that had its first flight in July 2018, becoming the first program to carry Transition-Edge Sensors (TES) and multiplexing Superconducting QUantum Interference Device (SQUID) readout electronics into space, successfully collect data, and subsequently recover the instruments. While a rocket pointing failure...
- Keyword:
- TES, Sounding Rocket, Microcalorimeter, SQUID multiplexing, and X-ray
- Subject:
- Astrophysics, Physics, and Low temperature physics
- Creator:
- Manzagol-Harwood, Renee Elisabeth
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_937247 and http://dissertations.umi.com/northwestern:16308
-
- Description:
- Superconducting-circuit based platforms are strong contenders in the race to build a quantum computer.While the transmon has had extraordinary success as the leading superconducting qubit modality, there are reasons to believe that other types of qubits could possess relative benefits in terms of noise immunity, anharmonicity, or extensibility. In this...
- Keyword:
- fluxonium, Superconducting circuits, Quantum computing, and current mirror
- Subject:
- Physics and Quantum physics
- Creator:
- Weiss, Daniel Kamrath
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_933500 and http://dissertations.umi.com/northwestern:16292
-
- Description:
- From the early usage of metallic thin films as mirrors tracing back to 2900 BC, to the modern thin film photonic circuits as a mature optical processing platform, and to the growing class of atomically-thin two-dimensional (2D) materials with diverse and tailorable properties, thin film materials have played an important...
- Keyword:
- Two-dimensional materials, Photonic circuits, Thin film materials, Topological photonics, Electron-beam lithography, and Optical materials
- Subject:
- Physics and Materials Science
- Creator:
- Liu, Pufan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_946295 and http://dissertations.umi.com/northwestern:16358
-
- Description:
- Since the dawn of mankind, humans have used materials and tools to dominate the world. As our understanding of the fields physics, chemistry and engineering is growing, we are able to artificially create advanced materials with engineered responses. Next step would be to create ‘ smart’ or intelligent materials capable...
- Keyword:
- Hydrogels, Soft Active Materials, Continuum modeling, Finite element, and Soft matter
- Subject:
- Physics
- Creator:
- Aggarwal, Aaveg
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_932341 and http://dissertations.umi.com/northwestern:16286
-
- Description:
- In this dissertation, I summarize my findings of the dynamics of colloidal suspensions over a large range of volume fractions in two systems: drop impact and film rupture. The existence of a deformable surface in both these systems allows me to capture the consequences of non-Newtonian flow using high-speed imaging....
- Keyword:
- shear rheology, drop impact, Fluid dynamics, High-speed imaging, Soft matter, and Colloidal suspensions
- Subject:
- Physics and Materials Science
- Creator:
- Shah, Phalguni S.
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_937776 and http://dissertations.umi.com/northwestern:16311
-
- Description:
- The increasing demand for green energy has created great demand for high purity lanthanide elements because of their wide range of applications, such as in permanent magnets, batteries, and high-energy capacitors. Solvent extraction, which transfers ions from aqueous solutions to organic liquid phases with the support of extractant molecules, is...
- Keyword:
- Interfacial structure, X-rays, Lanthanide, Solvent Extraction, and Synchrotron
- Subject:
- Physics
- Creator:
- Yoo, Sangjun
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16334 and etdadmin_upload_942685
-
- Description:
- The field of time-domain astronomy has seen significant advancements in the latest years as increasingly sensitive, deep and wide-field surveys of the sky at all wavelengths are being carried out more and more frequently. Furthermore, the addition of gravitational wave detectors around the world has opened an entirely new window...
- Keyword:
- Multimessenger events, Tidal Disruption Events, and Binary neutron star mergers
- Subject:
- Astronomy, Astrophysics, and Physics
- Creator:
- Hajela, Aprajita
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16226 and etdadmin_upload_927481
-
- Description:
- New capabilities in x-ray microscopy have been enabled by rapid advances in synchrotronlight sources and in high performance computing. We present here conceptual and computational advances in two areas of x-ray microscopy. One involves ptychography, where computation is used to obtain images from diffraction patterns as a finite coherent illumination...
- Keyword:
- Ptychography, Fluorescence tomography, Data compression, X-ray Imaging, and X-ray microscopy
- Subject:
- Physics
- Creator:
- Huang, Panpan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_910750 and http://dissertations.umi.com/northwestern:16123
-
- Description:
- Engineering responses of soft materials at hierarchical time and length scales is of great interest to both fundamental science and technological applications. In recent years, the hybridization between emerging soft condense matters and conventional hard condense matters keeps enriching the materials library of humankind and opens another largely-uncharted venue for...
- Keyword:
- Collective Behavior, Soft Materials, Stimuli-responsive Materials, Active Colloids, Active Matter, and Stokesian Dynamics
- Subject:
- Physics, Materials Science, and Computational physics
- Creator:
- Yuan, Hang
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16039 and etdadmin_upload_900796
-
- Description:
- Interfacial science brings together diverse areas of interest such as electronic materials, quantum materials, bio-membranes and catalysts. In-situ X-ray characterization techniques can be used to understand the assembly of atoms, molecules and supported nanoparticles at interfaces in complex environments. This thesis work focuses on the use of various X-ray characterization...
- Keyword:
- Atomic Layer Deposition, X-ray standing wave, Catalysis, Thin film, X-ray spectroscopy, and X-ray physics
- Subject:
- Physics and Materials Science
- Creator:
- Das, Anusheela
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15916 and etdadmin_upload_877997
-
- Description:
- I present concepts and methods for evaluating infrared camera systems. The individual components of camera systems are fairly well understood, but the system is more than the sum of its parts. Many of the usual techniques for measuring individual photodetectors are inapplicable to pixels which are permanently bonded to a...
- Keyword:
- Instrumentation
- Subject:
- Astrophysics and Physics
- Creator:
- Rabinowitz, Jacob
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_899503 and http://dissertations.umi.com/northwestern:16022
-
- Description:
- Since its discovery in 2012 at the Large Hadron Collider (LHC), efforts have beenmade to measure and characterize the properties of the Higgs boson. Among these efforts have been searches for rare decays of the Higgs predicted by the standard model (SM) of particle physics. One such decay is the...
- Keyword:
- LHC, CMS, and Higgs
- Subject:
- Physics and Particle physics
- Creator:
- Bueghly, James
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_901480 and http://dissertations.umi.com/northwestern:16051
-
- Description:
- As fourth-generation synchrotron x-ray sources start to come online, they bring with them the promise of increased imaging speed and resolution for current imaging modalities, while enabling entirely new ones. Employing the increased brightness at hard x-ray energies begins with having efficient focusing optics in place. Zone plates are popular...
- Subject:
- Physics and Computational physics
- Creator:
- Syed, Sajid Ali
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15831 and etdadmin_upload_857546
-
- Description:
- Engineering heat transport in materials is essential for thermal management in a wide range of technologies, from batteries to thermoelectrics. Materials host a wide spectrum of heat-carrying phonons, which vary in their frequency, spatial extent, and degree of plane-wave character. This diversity in phonon properties leads to complex behavior, especially...
- Keyword:
- thermal modelling, thermal conductivity, semiconductors, phonons, and thermoelectrics
- Subject:
- Physics and Materials Science
- Creator:
- Gurunathan, Ramya
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_856415 and http://dissertations.umi.com/northwestern:15824
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