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 23 for “"short-ranged"”.
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Shear behavior and microstructures of confined colloidal suspensions
… modeled as spheres interacting via a repulsive short-ranged electrostatic potential. Stress versus shear rate behavior is examined as a function of particle volume fraction, gap size, and shear history. Microstructures for systems at equilibrium and under shear are investigated by direct …
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The possibility of ferromagnetism in the liquid state
… large and if the exchange integral is not too short-ranged.</p>
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Electronic structure and quantum conductance of nanostructures
… is determined, the Hamiltonian matrix becomes short-ranged, diagonally-dominant, and transferable - i.e. a large nanostructure can be constructed by assembling together the Hamiltonians of its constitutive building block. This approach is first demonstrated for pristine semiconducting and …
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Resonant soft X-ray studies of charge orders in high-temperature cuprates with energy-resolving transition edge sensors
… is also the most intense at resonance making short-ranged charge orders harder to be defined. The fluorescence background can only be separated by introducing energy-resolving detectors because fluorescence differs from elastic peak on energy scale, which is the motivation of this thesis. We …
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An Investigation into Locomotion Techniques for Use in Virtual Reality Games
… to evaluate one novel techniques (Repeated Short-Ranged Teleports (RSRT)), a node-based technique (Continuous Movement Pads (CMP)), and a grabbing metaphor (World Grab) with popular techniques (Smooth Locomotion, Teleport). Most preferred by participants, we found that CMP could be a …
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Surfactant Adsorption during Collisions of Colloidal Particles: A Study with Atomic Force Microscopy (AFM)
… when the double-layer force is longer ranged. Furthermore, elimination off the surface charge or net surfactant charge eliminates adsorption with decreased solid-solid separation. The magnitude of the changes in surfactant adsorption at decreased separations is shown to scale with the …
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Ab-initio calculations for dilute magnetic semiconductors
… c. This coupling is very strong, but short ranged. It is typical for wide-band-gap semiconductors with partially filled impurity bands, such as e.g. (Ga,Mn)N. However, the resulting Curie temperatures are very small, since in the dilute limit the strong NN coupling cannot lead to a …
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Selective irradiation of the vascular endothelium
… targeted to endothelial cells from the short-ranged (5-9 [mu]m) particles released from neutron capture reactions in 10B confined to the blood by incorporation into 70-90 nm-diameter liposomes. Mice also received uniform photon doses above and below the threshold for death from the …
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Delocalization phenomena in strongly disordered systems
… from the different dynamical properties of short-ranged correlated states that form due to having strong interactions. We explain how this asymmetry presents advantages in the numerical as well as experimental study of many-body localization transitions.
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Studies in random Ising spin systems
… calculations are done on the twodimensional short-ranged random-bond model and the three-dimensional random-field model. The phenomenological renormalization group and the transfer-matrix method are generalized to random systems and applied to the random-bond Ising model, also called the …
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Interacting Elementary Excitations in Ultrarelativistic Plasmas: Damping Mechanisms and Plasma Thermodynamics
… space. Because the magnetic interaction is long-ranged, the damping rates of the excitations near the edge of the Fermi sea vary linearly with the excitation energy. The quasiparticles are therefore not as well- defined as those encountered in non-relativistic plasmas, with short-ranged …
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A search for superconductivity in conjugated polymers
… Thus the indirect exchange mechanism is short-ranged and the impurities should be relatively close to each other to facilitate anti-ferromagnetic fluctuations in the presence of bound hole pairs. The susceptibility measurements showed no signature of a phase transition within the …
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Quantitative all-atom and coarse-grained molecular dynamics simulation studies of DNA
… parallel duplex DNA molecules were measured; the short-ranged, attractive end-to-end stacking energy was obtained; a single-stranded DNA model was developed that reproduced experimental measurements of its extension upon applied force; and finally the nature of single-stranded DNA binding to a …
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Interaction elementary excitations in ultrarelativistic plasmas: damping mechanisms and plasma thermodynamics
… space. Because the magnetic interaction is long-ranged, the damping rates of the excitations near the edge of the Fermi sea vary linearly with the excitation energy. The quasiparticles are therefore not as well-defined as those encountered in non-relativistic plasmas, with short-ranged …
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Controls on the diversity of the fault slip styles at the brittle-ductile transition: examples from the Cape Fold Belt, Nuy Valley, South Africa
… thrust faulting in response to crustal shortening. Individual thrust faults are manifested in different ways, with quartz-cemented breccias, limestone mylonites, abundant quartz veining and cataclasites attesting to faulting occurring by a diversity of slip style, which allows …
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Study of localization and correlation effects in disordered electronic systems
… of the localization transition and effects of short-ranged interactions on the stability of the localization fixed point are discussed. We find the Hubbard interaction to be relevant whereas the triplet interaction (in the particle-particle channel) is found to be irrelevant. This indicates …
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Alterations in the phase behaviour of human γD-crystallin due to mutagenesis and chemical modification of the protein surface
… stable at high concentrations. HGD exhibits short-ranged attractive interactions, i.e. shorter than a quarter of the protein diameter. As a result, HGD undergoes liquidliquid phase separation (LLPS). The temperature (Tph) at which LLPS occurs can be used as a measure of the strength of …
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Two-Dimensional Modelling of Novel Back-Contact Solar cells
… have an established theoretical model for long-ranged lateral optical transport in these solar cells. Three models are developed: a bimolecular model for unscattered, coherent transport; a photon diffusion model for frequently scattered, noncoherent light; and a monomolecular, assisted-diffusion …
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Structure, slow dynamics, kinetic arrest, and massively reconfigurable assembly in colloidal suspensions
… kinetic arrest, and space spanning gelation of short ranged attractive spherical and non-spherical colloids. We address the recent claim that space spanning gelation is solely a product of spinodal decomposition. Our key finding is that the kinetic gel line does not scale with either …
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Nanoplasmonics and silicon nanophotonics devices for sensing applications
… (PRET) have been explored, they are mostly short-ranged (< 100 nm) and the energy transfer efficiency decreases drastically with distance. This thesis proposes a new energy transport route through a hybrid plasmonic-photonic system coupling the dipole-photonic-plasmonic resonance energy …
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