Index Catalog // Arch : Northwestern University Institutional Repository

Phases and Actuation of Superparamagnetic Soft Matter

Description:: External manipulation of soft matter underlies a multitude of advancements in far-from-equilibrium materials. The application of magnetic fields has proven tremendouslybeneficial due to its ability to impart rapid and precise changes throughout soft magnetic systems. This has led to scientists and engineers to develop composite materials that take advantage of...
Keyword:: dynamic magnetic fields, simulations, soft matter, membranes, theory, and superparamagnetism
Subject:: Computational physics
Creator:: Brisbois, Chase
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:16357 and etdadmin_upload_946183

Analytical Methods and Deep Priors on X-ray Ptychography, Computed Tomography, and Computed Laminography

Description:: X-ray imaging at nano and micro-scale is of great importance for the material science and defense industry. Large penetration depth and low wavelength of x-rays offer an important potential to image objects at high resolution and in a non-invasive process. While the ever-growing community is pursuing novel applications and looking...
Keyword:: Computed Tomography, Deep Image Priors, X-ray Ptychography, Deep Learning, Computational Imaging, and Computed Laminography
Subject:: Electrical engineering, Computational physics, and Computer science
Creator:: Barutcu, Semih
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 09/22/2022
Date Created:: 2022-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_927076 and http://dissertations.umi.com/northwestern:16218

Multiscale Lattice Discrete Particle Modeling of Concrete: Micromechanics, Scaling, Dynamics

Description:: Over 10 billion tons of concrete are produced for the construction industry every year, making concrete the second most used substance on Earth, only surpassed by water. With such high importance as a building material, there is significant need for the ability to accurately model concrete behavior. As a quasi-brittle...
Keyword:: Lattice Discrete Particle Model, Concrete, Micromechanics, Dynamics, Numerical Models, and Size Effect
Subject:: Materials Science, Computational physics, and Civil engineering
Creator:: Troemner, Matthew
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 06/22/2022
Date Created:: 2022-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_878306 and http://dissertations.umi.com/northwestern:15920

Engineering Responses of Soft Materials

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

Vision-Based Automation for Accelerated Structural Interpretation in Atomic-Resolution Microscopy

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

Computational x-ray imaging algorithms: enhancing current schemes and developing models for future schemes

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

Experimental Studies of Spin Waves in a Micrometer-Thick Yttrium Iron Garnet film, and Micromagnetic Simulations of Microwave Assisted Magnetic Reversal of Nanosized Magnets

Description:: Part I - Experimental Studies of Spin Waves in a Micrometer-Thick Yttrium Iron Garnet filmAn investigation of spin wave dispersion in a micrometer-thick ferrimagnetic yttrium iron garnet (YIG) film has been conducted in various regimes. In the linear excitation regime, the dispersion of spin waves was characterized in an yttrium...
Keyword:: Microwave assisted reversal, Micromagnetic simulation, YIG film, FMR, Spin wave instability, and Nano-size magnet
Subject:: Condensed matter physics and Computational physics
Creator:: Lim, Jinho
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:15798 and etdadmin_upload_851303

Physics-Informed Data-Driven Prediction and Design in Advanced Manufacturing Processes

Description:: Manufacturing processes are known for their intricacies in changing material shapes and properties. New generations of manufacturing technologies, known as flexible manufacturing, are moving toward design freedom, which allows producing parts with optimized geometries and high customizations at an affordable cost even for low-volume productions. Two prominent flexible manufacturing processes...
Keyword:: Neural Network, Reinforcement Learning, Manufacturing, Additive Manufacturing, and Artificial Intelligence
Subject:: Computational physics, Mechanical engineering, and Computer science
Creator:: Mozaffar, Mojtaba
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:15685 and etdadmin_upload_839531

Investigating Gastroesophageal Motility: Mechanical Work done during Esophageal Contractility and Fully Resolved Multiphysics Modeling of Gastric Peristalsis

Description:: Normal gastroesophageal motilty is important to live a comfortable and healthy life. Motility disorders result in impaired transport of ingested food which can lead to extreme discomfort and severe damage to the walls of the esophagus. Significant work has been done to study gastroesophageal motility using advanced diagnostic tools such...
Keyword:: gastrointestinal biomechanics, reduced-order modeling, esophageal motility disorders, peristalsis, fluid-structure interaction, and immersed boundary method
Subject:: Computational physics, Fluid mechanics, and Biomechanics
Creator:: Acharya, Shashank
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:15539 and etdadmin_upload_816410

First-Principles Study of Thermodynamics in Thermoelectric Materials

Description:: Thermoelectric materials have attracted widespread attention in recent decades because of their ability to directly convert thermal energy into electrical energy. Given that waste heat is the primary source of lost energy in the world, the implications of developing better thermoelectric materials are both immediate and far-reaching. Admittedly, large progress...
Keyword:: phase diagram, thermoelectric, first-principles, density functional theory, thermodynamics, and energy
Subject:: Materials Science and Computational physics
Creator:: Hua, Xia
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:15239 and etdadmin_upload_763275

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Phases and Actuation of Superparamagnetic Soft Matter

Analytical Methods and Deep Priors on X-ray Ptychography, Computed Tomography, and Computed Laminography

Multiscale Lattice Discrete Particle Modeling of Concrete: Micromechanics, Scaling, Dynamics

Engineering Responses of Soft Materials

Vision-Based Automation for Accelerated Structural Interpretation in Atomic-Resolution Microscopy

Computational x-ray imaging algorithms: enhancing current schemes and developing models for future schemes

Experimental Studies of Spin Waves in a Micrometer-Thick Yttrium Iron Garnet film, and Micromagnetic Simulations of Microwave Assisted Magnetic Reversal of Nanosized Magnets

Physics-Informed Data-Driven Prediction and Design in Advanced Manufacturing Processes

Investigating Gastroesophageal Motility: Mechanical Work done during Esophageal Contractility and Fully Resolved Multiphysics Modeling of Gastric Peristalsis

First-Principles Study of Thermodynamics in Thermoelectric Materials

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