Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 246 for “"macroscale"”.
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Framework for a Unified Macroscale Model of Magnetostriction
… magnetostriction. The lack of accurate models of macroscale hysteretic magnetostriction has inhibited the development of novel devices and savings. This thesis presents a framework for such a model. After motivating and providing the necessary background knowledge regarding these models, an …
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Deep Transfer Learning for Macroscale Defect Detection in Semiconductor Manufacturing
… recommendations regarding the presence of macroscale defects. In this work, a model for detecting central defects is described in detail, and a novel approach to overcoming data scarcity through the creation of synthetic data is deployed. The binary classifier model achieves an …
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Technology and applications of 2D materials in micro- and macroscale electronics
Over the past 50 years, electronics has truly revolutionized our lives. Today, many everyday objects rely on electronic circuitry from gadgets such as wireless earbuds, smartphones and laptops to larger devices like household appliances and cars. However, the size range of electronic devices is …
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Optical characterization of thermal transport from the nanoscale to the macroscale
The thermal properties of thin films and material interfaces play an important role in many technologies such as microelectronics and solid-state energy conversion. This thesis examines the characterization of thermal transport over length scales from nanometers upward in solids and liquids using …
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Convective boiling of refrigerants near the micro-macroscale transition inside plate heat exchangers
… due to nucleate boiling as is often argued for macroscale channels. Convective heat transfer through unsteady film flow on the corrugated wall is an important mechanism. Heat transfer also improves with higher saturation pressure and the associated lower latent heat during convective boiling; …
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Global soil respiration: interaction with macroscale environmental variables and response to climate change
The response of global soil respiration (Rs) to climate change determines how long the land can continue acting as a carbon sink in the future. This dissertation research identifies how temporal and spatial variation in environmental factors affects global scale Rs modeling and predictions of …
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Tailored Optical Properties on the Macroscale by Template-Assisted Self-Assembly of Plasmonic Nanoparticles
… tailoring effective optical properties on the macroscale via controlled hierarchical surface-assembly of plasmonic nanoparticles. The fundamental concept pursued in this thesis can be divided into three sub-goals that are addressed in individual publications: (I) controlled large-scale …
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Macroscale Design and Modeling of Multifluidic Cantilever Devices for Advanced Nanoscale 3D Printing Applications
… project is to design, model, and fabricate macroscale models of three potential fluid switching mechanisms/devices that can be implemented onto the existing nanoscale 3D printer to accommodate the use of multiple materials in a desired print. The project will develop designs of different …
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Improving Macroscale Defect Detection in Semiconductor Manufacturing using Automated Inspection with Convolutional Neural Networks
… four distinct pathways of improving wafer macroscale defect detection from both tool-centric and operator-centric perspectives. The primary tool-centric improvement detailed in this work is the implementation of machine learning-enhanced defect detection models to provide recommendations of …
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Step-growth hydrogels crosslinked through grafted polypeptides enable nano- to macroscale synthetic extracellular matrix design
Step-growth hydrogels crosslinked through grafted polypeptides are introduced as a powerful platform for extending the potential of established hydrogel systems, especially for applications in tissue engineering. Gels crosslinked through grafted polypeptides offer the potential to address many …
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Multiscale modelling of continuum and discrete dynamics in materials with complicated microstructure
… scientist and engineers to build efficient macroscale mathematical models for simulating materials with complicated microstructure. But the modelling methodology rarely systematically derives the boundary conditions for macroscale model. This thesis aims to systematically derive boundary …
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Nanoscale thermal systems in subcritical region
… and constant pressure phase change for a macroscale system. Then nonlinear curve fitting was performed using two cubic equations to obtain a representation of the simulation data. The continuous phase change behavior predicted by the molecular simulation is verified by using an approximate …
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Grinding of cement clinkers : linking multi-scale fracture properties to system chemistry, mineralogy and microstructure
… were defined for clinkers: the nodules at the macroscale, the clinker matrix and porosity at the intermediate scale, and the clinker phases at the microscale. A statistical EPMA method was developed to allow simultaneous determination of the clinker bulk chemistry, the chemistry of the clinker …
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Increased production of aligned cellulose nanofibrils using microfluidic mixture chambers
In this thesis, the production of cellulose macroscale fibers from cellulose nanofibrils using flow focusing in microfluidic mixture chambers is examined and tested. This process accomplishes the difficult task of aligning cellulose nanofibrils and gelling them together to create macroscale …
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Modelling the spatial distribution of blackbird (Turdus merula) and ring ouzel (Turdus torquatus) in Switzerland
… the realised habitat best. While the models on macroscale (grid of one square kilometre) cover the entire country, we select a set of smaller plots for modelling on territory scale. Whereas ring ouzels occur in altitudes above 1’000 m a.s.l. only, blackbirds occur from the lowlands up to the …
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Multiscale Modelling of Foodborne Diseases
… cause of infectious disease spread at the macroscale. Modellers of infectious diseases are increasingly using multiscale modelling approach in response to this challenge. Multiscale models of infectious disease systems encompass intricate structures that revolve around the interplay of …
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An Experimental Study of Momentum and Thermal Transport in Flow Through Smooth- and Rough-Wall Microchannels
… the range 200 ≤ Re ≤ Recr agree well with macroscale predictions in both the thermally-developing and -developed regimes With increasing roughness, while an enhancement in local Nu is noted in the thermally-developing regime, no measurable influence is observed upon attainment of a …
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Computational Micromechanics Analysis of Deformation and Damage Sensing in Carbon Nanotube Based Nanocomposites
… electron hopping mechanism to effective macroscale piezoresistive response through finite elements based computational micromechanics techniques. The evolution of nanoscale conductive electron hopping pathways which leads to nanocomposite piezoresistivity is studied in detail along with …
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Brain functional connectivity and its aberrations in mouse models of autism
… intrinsic organization of the mouse brain at the macroscale as seen through resting-state fMRI (rsfMRI). The analysis of a large rsfMRI dataset revealed the presence of six distinct functional modules related to known brainwide functional partitions, including a homologue of the human default-mode …
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Significance of nanosilica incorporation in type G oil well cement pastes
… condition (80 °C with 10 MPa pressure). Macroscale mechanical characterization of the hardened cement pastes was investigated using axial compression, rapid chloride-ion penetration test (RCPT), and axial degradation/damage progression analysis and quantification after carbonic acid …
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