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 20 for “"Confined geometries"”.
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Layer-by-layer assembly in confined geometries
… nature of layer-by-layer (LbL) assembly in confined geometries was investigated for a number of different chemical systems. The first part of this thesis concerns the modification of microfluidic and nanofluidic devices which hold great potential as a platform for manipulation and analysis …
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Colloidal interactions under applied fields in confined geometries
Includes bibliographical references (pages 61-64).
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NMR relaxation studies of liquids in confined geometries
… (NMR) relaxation has been used for the study of confined geometry effects on the translational and rotational dynamics of molecular liquids in sol-gel prepared porous silica glasses. The NMR relaxation times of a variety of nuclei, including $\sp1$H, $\sp2$H, $\sp{14}$N, and $\sp{13}$C, of a …
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Deuterium NMR relaxation studies of liquids in confined geometries
… resonance (NMR) has been employed to study the confined geometry effects on reorientational dynamics of molecular liquids in porous media. The relative role of the pure geometrical confinement and the strength of the surface effect is investigated. The deuteron NMR spin-lattice relaxation times, …
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On the dynamics of bouncing droplets in confined geometries
… quantum realm. In particular, walkers in confined circular corrals exhibit a wave-like statistical behaviour similar to that of electrons inside quantum corrals. My results show that localised topological inhomogeneities in an elliptical corral may significantly diminish or enhance the …
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NMR study of the unfolding of ribonuclease A, and dynamical studies of liquids in confined geometries
The cold, heat, and pressure unfolding of RNase A has been studied by 1D and 2D $\sp1$H NMR spectroscopy, spin-lattice relaxation time measurements, and the pressure-jump hydrogen-exchange method. It was found that the pressure denatured states of RNase A display some characteristics of a molten …
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Polymer dynamics and fluctuations probed with fluorescence methods
… and dynamics at solid-liquid interfaces and confined geometries, respectively. The role of polymer dynamics and fluctuations on the topological confinement formed by entanglement strands in a polymer solution, as experienced by a particle of comparable size is also investigated. These …
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A study of electrochemical transport and diffuse charge dynamics in nanoscale devices using a Langevin equation
… Stokes suspension simulations in doubly-periodic confined geometries is also developed, and applied to simulate electro-osmosis. Finally, the results of this approach are compared to those of the continuum model based on the Poisson-Nernst-Planck and Stokes equations.
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Nanoscale stress-induced conducting states in functional oxides
… process ideally suited for materials possessing confined geometries. This thesis seeks to address the role that highly localised stress plays in inducing conducting states on the nanoscale within two unique material systems; ferroelectric mixed-phase Bismuth Ferrite, and the metalinsulator …
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Turbulence-particle interactions on surfaces
… control of pathogen and contaminant dispersal in confined geometries, relevant for a wide range of applications.
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Simulations and Control of Artificial Microswimmers in Blood
… solvent. Finally, we simulate swarms of ABFs in confined geometries, showing interesting collective behavior that can be tuned by changing the external magnetic field.
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Incident shock Mach number effects on Richtmyer-Meshkov mixing with simultaneous density and velocity measurements
… for optimization in applications with confined geometries.
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Surface Characterization of Poly (epsilon-caprolactone) at the Air/Water Interface
… model system for studying crystallization in confined geometries and the effect of crystallinity on enzyme catalyzed hydrolysis of this important biodegradable polymer at the A/W interface. The main objectives of this thesis were to investigate the phase behavior of PCL at the A/W interface, …
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Confined Flow of Attractive Colloidal Suspensions
… particulate fluids flowing through complex confined geometries are frequently used in technological applications. While the flow properties of hard-sphere suspensions in micro-scale geometries have been studied extensively, the effects of interparticle attractions and particle size …
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Poly(L-Lactic Acid) Langmuir Monolayers at the Air/Water Interface and Langmuir-Blodgett Films on Solid Substrates: Phase Behavior, Surface Morphology, and Crystallinity
… and testing of theories for crystallization in confined geometries, and separating the roles that roughness and crystallinity play in cell adhesion and spreading on biocompatible polymer surfaces.
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Mechanics of seed-grown planar chemical gardens
… 1, a review of chemical gardens studied in confined geometries -- Hele-Shaw cells and microfluidic chips -- is presented. Studies in these geometries have been classified into three approaches: seed-growth in Hele-Shaw cells, injection-growth in Hele-Shaw cells, and co-injection-growth in …
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Confinement-mediated accumulation and collective dynamics of microswimmers
… the influence of geometry on the dynamics of confined microswimmers. We show that the presence of solid boundaries can encourage local accumulation, clustering, and even large-scale collective flows including at moderate concentrations. Following experimental work (either done by us or our …
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Collective behavior of colloidal suspensions under electric fields and confinement
… applications in the modeling of suspensions in confined geometries.
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The effects of disorder on superconducting islands and island arrays
… and vortex-vortex interactions due to their confined geometry and strong disorder. The Sn island arrays on graphene served as a platform to study the effects of point disorder on the magnetic field-driven superconductor-insulator quantum phase transition. By tuning point disorder in the …
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Microfluidics at high-intensity X-ray sources: from microflow chips to microfluidic liquid jet systems
… or enabled the optimization of the microchannel geometries. As a result, the non-linear scientific problem of non-Newtonian fluids in confined geometries is now well understood and the related experimental control parameters have been identified and quantified. This flow-alignment of cylindrical, …