Browsing Physics and Astronomy by Title
Now showing items 145-164 of 768
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Devices for satellite-assisted quantum networks
(University of Waterloo, 2021-09-24)Quantum networks, quantum nodes interconnected by quantum channels, offer powerful means of secure communications and quantum computations. They are crucial elements in a broad area of quantum technologies including quantum ... -
Dielectric Measurement and Analysis of Ultrastable PMMA Glass
(University of Waterloo, 2022-02-09)A stable glass, distinguished from an ordinary glass, has phenomenal characteristics such as a high density and a high kinetic stability. In this project, stable glasses of poly(methyl methacrylate) (PMMA) are produced ... -
Direct generation of three-photon entanglement using cascaded downconversion
(University of Waterloo, 2013-12-06)High quality entangled photon sources are a key requirement for many promising quantum optical technologies. However, the production of multi-photon entangled states with good fidelity is challenging. Current sources of ... -
Direct Observations of Scavenging Reactions of the Prehydrated Electron and OH Radicals by Femtosecond Time-Resolved Laser Spectroscopy
(University of Waterloo, 2011-09-02)Radiotherapy is the major curative therapy for carcinogesis. Identifying the effective species that induce DNA damage under ionizing radiation holds the key to improve and advance radiotherapy. In a cellular environment, ... -
Discrete-Time Quantum Walk - Dynamics and Applications
(University of Waterloo, 2010-01-25)This dissertation presents investigations on dynamics of discrete-time quantum walk and some of its applications. Quantum walks has been exploited as an useful tool for quantum algorithms in quantum computing. Beyond quantum ... -
Disorder, Geometric Frustration and the Dipolar Interaction in Rare-Earth Magnets
(University of Waterloo, 2010-08-30)This thesis will present research that studies the role of disorder, geometric frustration and the long range dipolar interaction on the collective behaviour of several insulating, rare earth magnets. Experiments were ... -
Dispersion-cancelled imaging with chirped laser pulses
(University of Waterloo, 2013-06-20)This thesis deals with chirped-pulse interferometry, an interferometric imaging technique with a resolution which is unaffected by the normally detrimental effects of sample dispersion. The thesis begins with some important ... -
Double-pulse Model for the Study of Red-shifted Spectrum in Multi-frequency Raman Generation
(University of Waterloo, 2023-09-25)Multi-frequency Raman Generation (MRG) is a promising technique for generating few-femtosecond to sub-femtosecond pulses with high energy conversion efficiency. During transient MRG experiments coupled with two chirped ... -
Dust Near Galactic HII Regions
(University of Waterloo, 2012-11-15)The distributions of physical properties, such as the temperature, mass, or density of the dust grains in molecular clouds near Galactic massive star forming regions are relatively poorly understood. These properties are ... -
Dynamical Properties of Dark Matter Halo Mergers
(University of Waterloo, 2015-09-29)This thesis examines the nature of mixing and heating during the merging of single, isolated dark matter halos, as well as a short discussion of the statistical nature of repeated mergers in a cosmological setting. A small ... -
Dynamics of polymer thin films and surfaces
(University of Waterloo, 2007-05-18)The dynamics of thin polymer films display many differences from the bulk dynamics. Different modes of motions in polymers are affected by confinement in different ways. The enhancement in the dynamics of some modes of ... -
Dynamics of Quantum Information of the Central Spin Problem
(University of Waterloo, 2018-01-17)Environmental effects on the evolution of a spin system in the context of the central spin problem, have been studied for more than 60 years. With the growing complexity of quantum information processors there is a new ... -
Edge Modes and Carrollian Hydrodynamics on Stretched Horizons
(University of Waterloo, 2022-09-27)The first part of this thesis is aimed at investigating the crucial role played by emergent boundary degrees of freedom, called edge modes, in gauge theories defined in spacetimes with boundaries. We propose a simple and ... -
Effect of chain stiffness on the entropic segregation of chain ends to the surface of a polymer melt
(2019)Entropic segregation of chain ends to the surface of a monodisperse polymer melt and its effect on surface tension is examined using self-consistent field theory (SCFT). In order to assess the dependence on chain stiffness, ... -
Effect of Dissipation on the Dynamics of Superconducting Single Electron Transistors
(University of Waterloo, 2012-08-30)In this thesis, I will present the experimental results of the dynamics of superconducting single electron transistors (sSETs), under the influence of tunable dissipation. The sSET, consisting of two dc SQUIDs in series ... -
Effect of Nanoscopic Particles on the Mesophase Structure of Diblock Copolymers
(American Chemical Society, 2002)Introduction. The fabrication of novel biomimetic photonic and electronic materials requires the manipulation of both organic and inorganic materials at the nanometer length scale. One possible means of achieving this level ... -
Effect of pressure and temperature on interfacial tension of poly lactic acid melt in supercritical carbon dioxide
(Elsevier, 2015-04-11)The interfacial tension of poly lactic acid (PLA) melt is measured in supercritical carbon dioxide (CO2) at the temperature range of 143 °C to 168 °C and CO2 pressures up to 2000 psi, using Axisymmetric Drop Shape Analysis ... -
Effect of Temperature and Pressure on Surface Tension of Polystyrene in Supercritical Carbon Dioxide
(ACS Publications, 2007-02-15)The surface tension of polymers in a supercritical fluid is one of the most important physicochemical parameters in many engineering processes, such as microcellular foaming where the surface tension between a polymer melt ... -
Effect of well-dispersed surface-modified silica nanoparticles on crystallization behavior of poly (lactic acid) under compressed carbon dioxide
(Elsevier, 2016)In this work, the crystallization behavior of poly (lactic acid) (PLA)/amine-modified silica nano- composites at different loadings of amine-modified silica (1, 2, and 8 wt %) under isothermal, non- isothermal, and isothermal ... -
Effective Dose Gradients in Lung Radiotherapy: Setting Target Margins and Monitoring Dose Deviations for Image-Guided Adaptive Strategies
(University of Waterloo, 2016-04-28)Organ motion is a major source of geometric uncertainty in the delivery of external beam radiation therapy. Organ motion that occurs during the delivery of radiation therapy is referred to as intrafraction organ motion. ...