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.
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Showing 1 to 20 of 41 for “"quasi-2D"”.
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Modeling the mechanics of quasi-2D biological tissues through morphological cues
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Presentation and accessibility of surface bound ligands on amphiphilic graft copolymer films
… at the polymer/water interface, resulting in quasi-2D confinement of the backbone at the immediate surface. The branched architecture and amphiphilic chemistry of these polymers results in a dense PEO brush that resists cell adhesion. To facilitate specific cell-surface interactions, small …
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Regeneration mechanisms of organized structures in near-wall turbulence
… performed direct numerical simulations (DNS) of quasi-2D (that is with flow parameters independent of longitudinal coordinate) decaying and forced turbulence and 3D turbulent channel flows in order to ascertain the sustenance mechanism of near-wall turbulence by investigating the mechanism of …
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Sidewall effects in compression corner shock-wave/boundary-layer interactions
… separations have been seen to influence the ‘quasi-2D’ primary SBLI far away from the sidewalls for the oblique shock reflection. The mechanism for these ‘corner effects’ is not fully understood, and it is not known if they are present in other supersonic SBLIs such as the compression corner. …
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The Colloidal Glass Transition Under Confinement
… colloidal glass transition. In two dimension (2D), we prepare quasi-2D confined colloidal liquids with optical tweezers. We confirm the existence of a divergent static length in quasi-2D liquids. We further use the confinement as a tool to probe the Mermin-Wagner long-wavelength fluctuations. …
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Μεσοπορώδη και μέσο ή/και νάνο δομημένα λειτουργικά υλικά για τεχνολογικές εφαρμογές
… τα οποία αποτελούνται από ψευτοδισδιάστατα (quasi-2D) και τρισδιάστατα (3D) αλογονίδια του μολύβδου, βασισμένα κυρίως σε βρώμιο, καθώς και δισδιάστατα (2D) οργανικών-ανόργανων ημιαγωγών, κυρίως με βάση τον ιωδιούχο μόλυβδο (PbI2), όλα από τα οποία χρησιμοποιήθηκαν επιτυχώς για την κατασκευή …
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Interacting fermions : a holographic approach/
… not fit within Fermi liquid theory. These are quasi-2D metals on the verge of becoming insulators, and they happen to become superconducting at low temperature, by a mechanism different than BCS superconductivity. The physics of these materials calls for a new strongly coupled universality …
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Materials in extreme conditions : experimental developments and studies of systems far from equilibrium
… Building upon previous work employing a novel quasi-2D focusing geometry, pressures of at least 100 GPa are achieved on the benchtop at the micron scale. Diagnostics for optical visualization of these generated waves were also refined; an existing single-shot multiframe imaging technique was …
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Accurate Treatments of Electronic Correlation: Phase Transitions in an Idealized One-Dimensional Ferroelectric and Modelling Experimental Quantum Dots
… Two idealized dots, spherical and squashed, quasi-2D structures, are analyzed. In the first QMC is contrasted with a large set of commonly used electronic structure methods including MSFT, KLI, LSDA, and CCSD, and in the second we scrutinize whether SDW states truly exist as predicted by …
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Spin dynamics of bulk and quasi-two-dimensional metal halide based perovskite semiconductors
… states within solution processed bulk and quasi-two-dimensional (quasi-2d) metal halide perovskites. Specifically, of their spin dependencies on lattice and many-body interactions. Many of these results were obtained in close collaboration with others, as specified throughout the …
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Stochastic and deterministic models for dense granular flow
… extending the Spot Model beyond drainage to any quasi-2D geometry with a computable stress field. Limit-State Mohr-Coulomb Plasticity is used to approximate the stress profile in a slow flowing granular assembly. The SFR then describes quantitatively how to convert the slip-line field and …
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Aerodynamics of Endwall Contouring with Discrete Holes and an Upstream Purge Slot Under Transonic Conditions with and without Blowing
… HP turbine. The experiments were performed in a quasi-2D linear cascade with measurements at design exit Mach number 0.88 and incidence angle. Four cases were analyzed for each endwall -- the effect of slot presence (with/without coolant) and the effect of discrete holes (with/without coolant) …
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Continuous synthesis of metal halide perovskite nanoparticles with sharp and stable emission
… nanoparticles with size control, especially the quasi-2D nanoplatelets, are of great interest. However, the lack of deep understanding of the synthesis reaction hinders further development of the quasi-2D metal halide perovskite nanoplatelets. The lack of size control and thickness tuning impedes …
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Design and Optimization of Moldable Microstructures for Structural Color Generation
… strictly required for structural color – simple quasi-2D shapes of a single material are capable of producing simpler color and iridescence, without the manufacturing difficulties. These shapes are also capable of being embossed or molded into a single material, allowing for many mass production …
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Phase behavior of dipolar fluids and ion-dipole mixtures, and surface diffusion of adsorbed polymers
… I examine the possibility of phase separation in quasi-2D dipolar fluids. In Chapter 4, I proceed to binary systems. Since I have excluded the possibility of phase separation in the DHS system and it is well known that the RPM system exhibits phase separation, these result naturally lead to the …
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Aero-propulsive characteristics of an overwing distributed electric propulsion system with vectored thrust
A series of experiments were conducted on a quasi-2D S8036 airfoil with a distributed electric propulsion (DEP) system. An overwing ducted fan system was tested with varied thrust angles achieved by deflecting the fan exit flow direction. The DEP system was comprised of five electric fans mounted …
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Process-Structure-Property Relationship Study of Selective Laser Melting using Molecular Dynamics
… In the process-structure study, a quasi-2D model of Micro-Selective Laser Melting process using molecular dynamics is developed to investigate the localized melting and solidification of a randomly-distributed Aluminum nano-powder bed. The rapid solidification in the meltpool …
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Atomistic Molecular Dynamics Studies of Grain Boundary Structure and Deformation Response in Metallic Nanostructures
… simulations were performed on both thin-film and quasi-2D virtual samples constructed using a Voronoi tessellation technique. The samples were subjected to virtual mechanical testing using uniaxial strain at strain rates ranging from 105s-1 to 109s-1. Seven different interatomic embedded atom …
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Eulerian-Eulerian Modeling of Fluidized Beds
… with 5 and 9 jets was considered for a quasi-2D bed, and simulations were performed in both 2D and 3D. Fluidization characteristics and mixing of the bed were analyzed for the simulation. Furthermore, the deadzones formed due to multiple jet configurations of the distributor are …
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(e,2e) spectroscopic investigations of the spectral momentum densities of thin carbon films
… a-C based on small, randomly-oriented islands of quasi-2D graphite-like continuous random network structures. However, no definitive interpretations can be made until higher resolution experiments are performed on both a-C and single crystal graphite.
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