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-
- Description:
- The continuing increase in atmospheric CO2 to concentrations exceeding 400 ppm has attracted considerable attention from both scientists and policymakers. Industrial fossil fuel consumption generates a significant amount of CO2 emissions, and in particular, energy-intensive molecular separations that require thermal processes, such as distillation, drying, or evaporation, are responsible for...
- Keyword:
- Dimensionality, Noble Gases, Hexane, Xylene, Metal-Organic frameworks, and MOFs
- Subject:
- Inorganic chemistry, Chemistry, and Materials Science
- Creator:
- Idrees, Karam
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_991974 and http://dissertations.umi.com/northwestern:16625
-
- Description:
- Increasing industrialization and the resulting negative environmental impacts highlight the need to develop alternative renewable energy sources. The Sun is a massive source and organic solar cells are a growing field of study. As new materials are synthesized, the efficiencies of organic solar cells continue to grow, but without an...
- Keyword:
- x-ray scattering, transient absorption, and organic solar cell
- Subject:
- Physical chemistry, Chemistry, and Materials Science
- Creator:
- Lou, Sylvia Jen-Ming
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_626768 and http://dissertations.umi.com/northwestern:14458
-
- Description:
- Complex microstructures are ubiquitous in nature. The evolution of these microstructures alters their morphology and topology and thus very often dictates material properties, such as mechanical, electronic, thermal, and magnetic properties. Thus, in order to predict and control material properties, it is essential to have robust and efficient techniques to...
- Subject:
- Materials Science
- Creator:
- Elder, Kate Lauren Maud
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15525 and etdadmin_upload_814831
-
- Description:
- Atomistic methods offer a powerful set of tools in the study of materials systems, as they allow materials scientists to ask questions with a high degree of specificity. They are well suited for studying and designing energy materials, critical due to the climate crisis, in part due to their ability...
- Subject:
- Materials Science
- Creator:
- Patel, Shane
- 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:16415 and etdadmin_upload_962311
-
- Description:
- One of the grand challenges in materials chemistry and nanochemistry is the development of functional materials through ordered, hierarchical structures using synthetic building blocks. Nature has done this through evolution of molecular components such as nucleic acids, saccharides, lipids, amino acids, and inorganic crystals. The precise spatial positioning of these...
- Keyword:
- Hierarchical Order, Responsive Materials, Peptide Amphiphiles, Self-Assembly, Materials chemistry, and Nanochemistry
- Subject:
- Chemistry and Materials Science
- Creator:
- Chin, Stacey Megan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_639807 and http://dissertations.umi.com/northwestern:14525
-
- Description:
- This thesis centers around the development and application of novel high throughput lithography tools. These advances help: 1) establish the field of nanocombinatorics, where massive libraries (termed megalibraries) of materials can be prepared in a positionally encoded manner and then screened for functional activity, and 2) advance stereolithographic 3D printing...
- Keyword:
- Scanning Probe, Nanolithography, 3D Printing, Lithography, Combinatorial Libraries, and Additive Manufacturing
- Subject:
- Nanotechnology, Materials Science, and Chemical engineering
- Creator:
- Hedrick, James Lupton
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_662564 and http://dissertations.umi.com/northwestern:14647
-
- Description:
- The effect of interfaces in solids on the overall charge transport properties has become a topic of growing importance for energy materials such as thermoelectrics. In some polycrystalline thermoelectric materials, the performance near room temperature is significantly limited due to thermally-activated electrical conductivity near room-temperature, which can be attributed to...
- Keyword:
- Contact resistance, Grain boundary, Charge transport model, Thermoelectric, Mg3Sb2, and NMC
- Subject:
- Physics and Materials Science
- Creator:
- Kuo, Jimmy
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15489 and etdadmin_upload_797891
-
- Description:
- Functional electronic materials are difficult to design due to the complex interplay among chemistry, atomic structure, and electrical properties. This dilemma is further amplified in transition metal compounds which can defy the band-theory description of non-correlated electrons. Exploring the vast possible design space completely with experiments or first-principles simulations is...
- Keyword:
- Transition metal oxides, Metal-insulator transition, Machine learning, and Data science
- Subject:
- Materials Science
- Creator:
- Wagner, Nicholas Adam
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14800 and etdadmin_upload_685025
-
- Description:
- Heteroanionic materials are a class of materials of interest for their unique and tunable electronic, ionic, thermal, and optical properties, which are distinct from their homoanionic counterparts due to their multi-anionic nature. Oxynitrides, a type of heteroanionic material, are useful catalysts due to the effect of mixing oxygen and nitrogen...
- Keyword:
- Oxynitrides, In situ synthesis, Tantalum oxynitride, Molybdenum oxynitride, and X-ray diffraction
- Subject:
- Materials Science
- Creator:
- Goldfine, Elise Ann
- 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:16477 and etdadmin_upload_978839
-
- Description:
- Given directives such as the UN Global Goals targeting sustainable development, the research presented herein makes but a small contribution to the advancement of alternative energy technologies. Nevertheless, the present work was largely motivated to address specific points of intrigue within the thermoelectrics community. The general principles demonstrated, however, may...
- Keyword:
- Heat Capacity, Thermal Conductivity, Thermoelectric, Thermodynamics, Thermal Expansion, and Phase Transition
- Subject:
- Physics, Materials Science, and Thermodynamics
- Creator:
- Agne, Matthias Thomas
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15127 and etdadmin_upload_743939
-
- Description:
- Biomaterials have immense potential for studying fundamental biological processes and developing therapies to help regenerate or replace the structure and function of injured tissues. In order to accomplish this, they need to be designed to mimic the structure and function of Nature’s most important material, the extracellular matrix (ECM) surrounding...
- Keyword:
- Peptide Amphiphile, Growth Factor, Aptamer, Biomaterials, Self-assembly, and Extracellular Matrix
- Subject:
- Materials Science
- Creator:
- Serrano, Christopher
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_681720 and http://dissertations.umi.com/northwestern:14779
-
- Description:
- Two-dimensional (2D) hybrid halide perovskites have been the response to their exciting but woefully unstable 3D counterparts. These 2D perovskites have been shown to have respectable stabilities as photovoltaic absorbers, yet they lag behind the 3D perovskites in terms of efficiency. With the need to catch up to the efficiencies...
- Keyword:
- solar cells, perovskites, films, GIWAXS, materials, and mechanisms
- Subject:
- Chemistry and Materials Science
- Creator:
- Hoffman, Justin Michael
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15609 and etdadmin_upload_827302
-
- Description:
- The dissertation systematically delineates the mechanically-guided deterministic assembly of three-dimensional (3D) mesostructures by compressive buckling, covering topics from mechanics concepts, design and analysis, fabrication techniques, to application opportunities. The development of approaches to form complex 3D functional mesostructures in advanced materials is a topic of broad interest, thanks to the...
- Subject:
- Materials Science, Mechanical engineering, and Civil engineering
- Creator:
- Luan, Haiwen
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14682 and etdadmin_upload_663249
-
- Description:
- Directional freeze-casting is a porous materials fabrication technique that is used to create materials with complex, three-dimensional pore structures. Particle suspensions are solidified under a thermal gradient, promoting anisotropic growth of dendrites and incorporation of particles within interdendritic space. A fully-solidified directional freeze-cast structure is composed of dendrites that are...
- Keyword:
- convection, microstructure, metals, porous, solidification, and freeze-casting
- Subject:
- Materials Science
- Creator:
- Scotti, Kristen
- 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:16652 and etdadmin_upload_1000506
-
- Description:
- Biomineralization relies on the regulation of localized environments to control how minerals are formed. Through the use of confinement and specific additives, the organism is able to change the energy landscape of nucleation and growth to build single crystals with unusual morphologies. In order to better understand the environments in...
- Subject:
- Materials Science
- Creator:
- Duggins, Danielle
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/16/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_937458 and http://dissertations.umi.com/northwestern:16309
-
- Description:
- A framework is developed that models point defect diffusion and interaction with pre-existing microstructures during irradiation, including defect-defect interactions and defect sinks. This framework uses a modified diffusion potential that includes not only defect concentration, but also intrinsic stresses from the pre-existing microstructure. Various microstructures are studied in {Fe} by...
- Keyword:
- Grain boundaries, Voids, Point defects, Radiation, Crack tip, and Triple junctions
- Subject:
- Materials Science, Mechanical engineering, and Nuclear engineering
- Creator:
- Zarnas, Patrick
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15639 and etdadmin_upload_831637
-
- Description:
- Dendritic microstructures form during the solidification of a variety of metal parts, from traditionally cast engine blocks to 3D-printed specialty tooling. These dendrites can evolve through growth, coarsening, fragmentation, and the formation of a Columnar-to-Equiaxed Transition (CET), which all can greatly affect material properties. However, the basic science behind these...
- Subject:
- Materials Science
- Creator:
- Thompson, Zachary
- 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:15913 and etdadmin_upload_876872
-
- Description:
- The highly flexible nature of 2D materials has led to them becoming fundamental building blocks for achieving novel device physics and potential breakthroughs in practical technologies. 2D layers can be interfaced in a wide array of methods with themselves, other 2D layered materials, or materials of entirely different type or...
- Keyword:
- Heterojunction, Two-Dimensional, Low-Dimensional, Exciton, Heterostructure, and Monolayer
- Subject:
- Optics, Materials Science, and Condensed matter physics
- Creator:
- Stanev, Teodor Kosev
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15716 and etdadmin_upload_843489
-
- Description:
- Non-planar and curved architectures of otherwise flat 2D materials present an important paradigm for nanoscale analysis and design of emergent material properties. Atomically-thin transition metal dichalcogenides (TMDs) have emerged at the forefront of the 2D materials field in recent years largely due to their attractive and tunable chemical, optical, and...
- Subject:
- Nanotechnology, Nanoscience, and Materials Science
- Creator:
- DiStefano, Jennifer G
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_788467 and http://dissertations.umi.com/northwestern:15438
-
- Description:
- Herein, we present an overview of our studies of the morphology, dynamics, and formation of heterogeneous soft matter systems via the emerging technique of liquid phase transmission electron microscopy (LPTEM). This particular subset of materials, more commonly referred to as emulsions, is tremendously commercially and biologically relevant, encompassing applications in...
- Keyword:
- liquid phase transmission electron microscopy, soft matter, emulsions, surfactants, and polymers
- Subject:
- Polymer chemistry and Materials Science
- Creator:
- Vratsanos, Maria A.
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 08/23/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_1009969 and http://dissertations.umi.com/northwestern:16698
-
- 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:
- An extensive set of functional electronic properties depends on the electronic structure. These properties are directly connected to the reciprocal-space representation of electronic structure. However, there is a complementary, real-space perspective that is described by combinations of atomic orbitals. Atomic orbitals are the components of electronic structures, analogous to how...
- Subject:
- Materials Science and Mechanical engineering
- Creator:
- Dylla, Maxwell Thomas
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15203 and etdadmin_upload_758137
-
- Description:
- Modeling the mechanical performance of metal produced with additive manufacturing (AM) has proven to be a challenging task. In the as-built state, these materials have been shown to exhibit strong heterogeneity and anisotropy. Even after post-processing, such as heat treatment or hot isostatic pressing and depending on the alloy, some...
- Keyword:
- Simulations, Additive manufacturing, Mechanical performance, and Solid mechanics
- Subject:
- Mechanics, Materials Science, and Mechanical engineering
- Creator:
- Kafka, Orion Landauer
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/28/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14952 and etdadmin_upload_708678
-
- Description:
- Over the last few years, there has been a transition away from traditional engineering materials to new advanced materials that exhibit complex architectures with improved mechanical properties. Most of the inspiration for these new materials comes from nature, where organisms have evolved an immense variety of macro and nanoscale shapes...
- Keyword:
- Catch bond, Biomimicry, Self-strengthening , Non-bonded interactions, Biomimetic systems, and Synthetic
- Subject:
- Molecular physics, Materials Science, and Biophysics
- Creator:
- Dansuk, Kerim Can
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/06/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_843657 and http://dissertations.umi.com/northwestern:15721
-
- Description:
- Graphene oxide (GO) is a heavily oxidized version of graphene, which is often made by oxidative chemical exfoliation from graphite powders. The reaction decorates the graphene sheets with oxygen-containing functional groups including hydroxyl and epoxide groups on the basal plane, as well as carboxyl groups on the edge, rendering the...
- Subject:
- Materials Science
- Creator:
- Huang, Haiyue
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_887181 and http://dissertations.umi.com/northwestern:15970
-
- Description:
- Structural colors originate from the interaction between the incident light and a surface with periodic submicron structures. They enable the creation of a spectrum of nonfading colors, potentially replacing toxic metal oxides and conjugated organic pigments. However, significant challenges remain, including lack of contrast needed for the complete gamut of...
- Subject:
- Materials Science
- Creator:
- Hu, Ziying
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15354 and etdadmin_upload_774230
-
- Description:
- As more thermoelectric materials/devices make it into the market for various applications, severalaspects need to be explored and optimized, beyond simply targeting high conversion efficiency at the material levels. One critical aspect is the guarantee of mechanical stability at both the material and the device level, which demands deeper understanding...
- Subject:
- Materials Science
- Creator:
- Al Malki, Muath Mohammed
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_988614 and http://dissertations.umi.com/northwestern:16622
-
- Description:
- Superalloys strengthened by γ′(L12)-precipitates in γ(f.c.c.)-matrix exhibit superior high temperature mechanical properties and environmental resistance over long periods of operation, making them ideal candidates for aerospace and energy conversion applications. The emerging class of superalloys based on Co-Al-W ternary system was identified with a melting temperature 50-100 ˚C higher than...
- Keyword:
- Microstructural evolution, Co-based superalloys, Atom-probe tomography, Phase-field, Mechanical properties, and Creep
- Subject:
- Materials Science
- Creator:
- Chung, Ding-Wen
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/29/2020
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_717986 and http://dissertations.umi.com/northwestern:14989
-
- Description:
- The past decade has seen the rapid progress of deep learning, which becomes a game-changing technique in different data-intensive domains, with the availability of large scale data, cost-effective computing hardware and more advanced learning theory and algorithms. Despite of the rapid progress of deep learning methods in daily-life applications, such...
- Keyword:
- Computational Photography, Representation Learning, Dataset Construction, Data Science, Computer Vision, and Deep Learning
- Subject:
- Materials Science, Information technology, and Computer science
- Creator:
- Jiang, Weixin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_899812 and http://dissertations.umi.com/northwestern:16024
-
- Description:
- SAMDI-MS (Self-Assembled Monolayers for MALDI-TOF Mass Spectrometry) couples the use of chemically-defined self-assembled monolayers of alkane thiolates on gold surfaces with MALDI-TOF mass spectrometry for rapid characterization of the surfaces. Reactions performed on the surfaces can be quantified directly by detection of the reaction substrates and products. This rapid detection...
- Keyword:
- SAMDI, mass spectrometry, bioassay, chromodomains, cell-free reactions, and microfluidics
- Subject:
- Analytical chemistry, Materials Science, and Biochemistry
- Creator:
- O'Kane, Patrick Thomas
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14615 and etdadmin_upload_661860
-
- Description:
- Materials that exist as well-defined individual entities at the nanoscale typically have properties that sets them apart from their bulk form. Consequently, there has been much time and effort invested in developing new well-defined nanoscale entities, but few attempts to assemble them into bulk materials. On the other hand, there...
- Keyword:
- Processing, Nanowires, Scalability , Graphene, Conductive Polymer, and Metals
- Subject:
- Nanotechnology, Nanoscience, and Materials Science
- Creator:
- Prestowitz, Luke C
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15687 and etdadmin_upload_839947
-
- Description:
- Melanin is a functional biopolymer most commonly associated with human skin pigmentation, where it serves as a radiation protection agent, shielding us from the harmful effects of UV radiation. However, melanin is also present in human ears, eyes, hair, and brains, serving a variety of functions. In fact, melanin...
- Keyword:
- porosity, toxin adsorption, nanoparticles, fungal, melanin, and radiation protection
- Subject:
- Materials Science and Biochemistry
- Creator:
- McCallum, Naneki C.
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15478 and etdadmin_upload_797429
-
- Description:
- Electrostatic interactions mediated by ionic environments play a central role in physical processes across materials science, chemistry and biology. Key biological phenomena, such as the condensation and packaging of DNA, ion transport across cellular membranes and the enzymatic action of proteins, rely on the complex interplay between nanoscale electrostatic, osmotic...
- Subject:
- Physics and Materials Science
- Creator:
- Krishnamoorthy, Kurinji
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14487 and etdadmin_upload_632859
-
- Description:
- Superconductivity is a fascinating manifestation of quantum mechanics on a macroscopic scale that has led to greater insights of the strongly correlated physics of a large number of interacting electrons ever since its discovery $\sim$ 100 years ago in elemental Hg. The unconventional superconductors that are based on uranium offer...
- Keyword:
- Crystal Growth, Uranium Superconductors, Unconventional Superconductors, Time-Reversal Symmetry-Breaking, Superconducting Vorticies, and Ferromagnetic Superconductors
- Subject:
- Materials Science, Condensed matter physics, and Low temperature physics
- Creator:
- Avers, Keenan Edward
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_794332 and http://dissertations.umi.com/northwestern:15459
-
- Description:
- At its core, the purpose of microscopy is to make objects and their underlying structures visible under high magnification. With the remarkable progress of electron microscopy, the sub-micron “high” magnification of light microscopy has been completely refashioned to encompass subatomic length scales. Unfortunately, higher-magnification does little to negate existing interpretability...
- Keyword:
- Image Similarity, Computer Vision, Atomic-Resolution Microscopy, Global Structure Optimization, Self-Annotated Datasets, and Information Extraction
- Subject:
- Materials Science, Computational physics, and Computer science
- Creator:
- Schwenker, Eric
- 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:15860 and etdadmin_upload_862806
-
- Description:
- Plasmonic nanoparticles have very large absorption cross sections and can concentrate the local density of photon states on the nano scale. When they are coupled to molecules or semiconductor nanocrystals and form different hybrid nanostructures, various light-matter interaction processes can be significantly enhanced or manipulated, including optical responses like fluorescence...
- Keyword:
- plasmon, nanostructures, and surface-enhanced Raman spectroscopy
- Subject:
- Physical chemistry and Materials Science
- Creator:
- Wu, Yue
- 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:15861 and etdadmin_upload_862992
-
- Description:
- Exploratory phase stability analysis in Materials Science has two primary goals: (a) Characterizing the evolution of the materials single phase field in composition space to identify solubility and electronic dopability limits and (b) Accelerated prediction of new phases of technological importance. In this thesis we reorganize defect theory --- the...
- Subject:
- Materials Science
- Creator:
- Anand, Shashwat
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_794325 and http://dissertations.umi.com/northwestern:15457
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- Description:
- Colloidal crystal engineering with DNA offers new opportunities for materials scientists to build and program the structures of superlattices beyond what can be accomplished in Nature with atomic crystal lattices. Thus far, such materials primarily have been studied for their optical properties due to the insulating nature of the DNA...
- Keyword:
- Nanoparticles, Self-Assembly, Surface Modification, and Colloidal Crystal Engineering
- Subject:
- Nanotechnology, Nanoscience, and Materials Science
- Creator:
- Oh, Taegon
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14533 and etdadmin_upload_640128
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- Description:
- The crystal structure of chalcogenides can vary from simple, ubiquitous structures of rock salt and zinc blende to unique structure types from the intricate packing of complex anionic building blocks. Exploratory synthesis and structural studies of novel chalcogenides containing these complex anions will augment the understanding of bonding in chalcogenides....
- Keyword:
- neutron detectors, synthesis science, chalcoborates, chalcophosphates, framework materials, and 2D materials
- Subject:
- Materials Science
- Creator:
- Chica, Daniel George
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15563 and etdadmin_upload_818510
-
- Description:
- The era of quantum information science (QIS) can usher revolutionary new capabilities ranging from quantum computation to quantum sensing. At the core of these technologies is the fundamental unit of QIS, the quantum bit or qubit. The power of qubits over their classical counterparts lies in their ability to be...
- Keyword:
- Dynamic nuclear polarization, Metal-organic frameworks, Electron paramagnetic resonance, Quantum information science, Qubits, and Spin-spin dynamics
- Subject:
- Inorganic chemistry and Materials Science
- Creator:
- Yu, Chung-Jui
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15436 and etdadmin_upload_788011
-
- Description:
- Two-step, solar thermochemical water splitting using nonstoichiometric oxides has emerged as an attractive approach for large-scale hydrogen production. Perovskite-structured oxides, with their wide tunability, offer the potential for high fuel productivity at moderate operating temperatures. Given the vast chemical space, the materials development effort is carried out here in combination...
- Keyword:
- Redox Thermodynamics and Material's Kinetics, Thermochemical Hydrogen Production, Oxygen Nonstoichiometry, DFT Computational Predictions, Inorganic Perovskites, and Thermo-kinetic Controlled Dynamics
- Subject:
- Materials Science, Chemical engineering, and Energy
- Creator:
- Qian, Xin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_797495 and http://dissertations.umi.com/northwestern:15479
-
- Description:
- The heart of computational materials science lies in providing fundamental insights and understanding of materials behavior and properties across different scales. The significance of this task is highlighted by the Materials Genome Initiative and the emergence of computational tools and frameworks such as materials by design, microstructure sensitive design, and...
- Keyword:
- random Process, Multiscale simulation, Microstructure, Gaussian process, and Uncertainty
- Subject:
- Materials Science, Statistics, and Mechanical engineering
- Creator:
- Bostanabad, Ramin
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14508 and etdadmin_upload_638165
-
- Description:
- The successful isolation of graphene marked the advent of two-dimensional (2D) materials. Their atomically thin structures enable unprecedented electrical, optical, and mechanical properties, which have triggered significant research interests in the past decade. For instance, they are promising candidates for the fabrication of flexible electronics, biological sensors, battery electrodes, and...
- Keyword:
- Toughening, Transmission Electron Microscopy, Molecular Dynamics Simulations, In Situ Fracture Test, Polymer, and Two-dimensional Materials
- Subject:
- Materials Science, Mechanical engineering, and Engineering
- Creator:
- Zhang, Xu
- 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:15978 and etdadmin_upload_889878
-
- Description:
- Sea urchins are virtuosi of biomineralization, the process by which organisms build mineralized tissues. The embryonic animal exemplifies this with the formation of its endoskeletal spicule. The primary mesenchyme cells (PMCs) undertake spicule synthesis, which involves deposition of the initial granule, elongation of the spicule, and several choreographed changes...
- Keyword:
- Biomineralization, Spicule, Sea urchins, and Calcite
- Subject:
- Materials Science
- Creator:
- Moreno, Bradley Keck
- 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:16210 and etdadmin_upload_926575
-
- Description:
- A series of theories and models are developed and used to investigate the growth of protective oxide films on metal and alloy surfaces for cases in which Wagner's classical model of oxidation does not hold. First, irreversible thermodynamics is applied to formulate a model for the outward growth of rocksalt...
- Keyword:
- corrosion, mathematical modeling, irreversible thermodynamics, and high temperature oxidation
- Subject:
- Materials Science and Applied mathematics
- Creator:
- Ramanathan, Rohit
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_757043 and http://dissertations.umi.com/northwestern:15201
-
- Description:
- Nucleic acids not only are the building blocks of life but also a class of attractive macromolecular therapeutics. However, the delivery of therapeutic oligonucleotides into cells has been a major challenge due to their large size and highly negatively charged backbone. Spherical nucleic acids (SNAs) are a class of emerging...
- Keyword:
- Nanomedicine, Gene regulation, and Drug delivery
- Subject:
- Materials Science, Biomedical engineering, and Chemical engineering
- Creator:
- Zhu, Shengshuang
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_672179 and http://dissertations.umi.com/northwestern:14728
-
- Description:
- Part I: Design of Photo-Responsive Molecules towards Biomedical ApplicationsThe use of light to control systems provides numerous advantages such as spatiotemporal precision, non-invasive penetration, and precise energy input. Specifically, molecules that undergo photoinduced cleavage, photoremovable protecting groups (PPGs) have emerged as an active area of research due to their broad...
- Subject:
- Polymer chemistry, Chemistry, and Materials Science
- Creator:
- Wang, Xiaodi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15393 and etdadmin_upload_780358
-
- Description:
- Non-covalent and ion-specific interactions in the context of charged polymers are ubiquitous in nature and in synthetic applications. For example, mussels utilize metal-coordinate bonds to form tough underwater adhesion to a wide range of substrates. The sandcastle worm uses coacervation of oppositely charged polymers to build robust structures for self-defense....
- Keyword:
- Coacervate, Polyelectrolytes, Polymer Mechanics, Quartz Crystal Microbalance, Oil/Water Interface, and Coatings
- Subject:
- Polymer chemistry and Materials Science
- Creator:
- Sadman, Kazi
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2019-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14664 and etdadmin_upload_662829
-
- Description:
- Surface patterns that can reconfigure under external stimuli are important for tailoring diverse properties such as surface adhesion, optical transmittance, and wettability depending on the feature size and orientation. Wrinkling a stiff skin layer on a pre-strained elastomer substrate has emerged as a method to create responsive structures without using...
- Keyword:
- Two-dimensional materials, Surface instabilities, Surface engineering, Thin films, Nanofabrication, and Soft materials
- Subject:
- Materials Science
- Creator:
- Rhee, Dongjoon
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 04/15/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_795810 and http://dissertations.umi.com/northwestern:15467
-
- Description:
- The complex structure of typical heterogeneous catalysts, where nanoparticles of active material are dispersed onto the surface of a thermally stable support with a high surface area, complicates the understanding of how the support can affect the resulting catalyst structure and properties. Using well-faceted and shape-controlled oxides as supports would...
- Subject:
- Materials Science
- Creator:
- Paull, Ryan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15035 and etdadmin_upload_729094
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