Browsing Physics and Astronomy by Issue Date
Now showing items 41-60 of 767
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NMR STUDY OF EXCHANGE AND HYDRATION SITE IDENTIFICATION IN MCM-41
(University of Waterloo, 2007-01-16)Deuteron 1D and 2D NMR spectroscopy was used to study the dynamics of water molecules within the mesoporous material MCM-41. The deuteron spectra show three magnetization components for a sample hydrated to a 0.2 monolayer ... -
Fiber Birefringence Modeling for Polarization Mode Dispersion
(University of Waterloo, 2007-01-17)This thesis concerns polarization mode dispersion (PMD) in optical fiber communications. Specifically, we study fiber birefringence, PMD stochastic properties, PMD mitigation and the interaction of fiber birefringence ... -
Modeling and Simulation of Polarization Mode Dispersion and Polarization Dependent Loss
(University of Waterloo, 2007-01-23)Novel theoretical formulations and efficient simulation methods for polarization-mode dispersion (PMD) and polarization-dependent loss (PDL) that are directly applicable to optical network design are developed. In particular, ... -
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 ... -
Thermal and charge conductivities of superconducting skutterudite compounds, PrRu4Sb12 and PrOs4Sb12
(University of Waterloo, 2007-02-20)The measurement of thermal conductivity is a powerful probe that can be used for identifying the nature of heat and charge carriers and structure of the gap in the superconducting compounds. At low temperature when the ... -
Spectroscopy of selected calcium and strontium containing polyatomic molecules
(University of Waterloo, 2007-05-15)A spectroscopic study of several calcium and strontium containing molecules has been completed. In total, seven electronic transitions from six different calcium or strontium containing species were observed and analyzed ... -
On Free Space Quantum Key Distribution and its Implementation with a Polarization-Entangled Parametric Down Conversion Source
(University of Waterloo, 2007-05-16)This thesis describes the deployment of a free-space quantum key distribution system across the University of Waterloo campus. The quantum key distribution system has the ability to provide unconditionally secure ... -
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 ... -
REAL-TIME OBSERVATION OF MOLECULAR REACTION MECHANISM OF HALOPYRIMIDINES AS RADIO-/PHOTOSENSITIZING DRUGS USING TIME-RESOLVED FEMTOSECOND LASER SPECTROSCOPY
(University of Waterloo, 2007-05-22)Replacement of thymidine in DNA by halopyrimidines, such as bromodeoxyuridine (BrdU) and iododeoxyuridine (IdU), has long been known to enhance DNA damage and cell death induced by ionizing/UV radiation, but the mechanism ... -
New Route to Frustration by Quantum Many-Body Effects in the Spin Liquid Pyrochlore Tb$_2$Ti$_2$O$_7$
(University of Waterloo, 2007-05-25)In this thesis we investigate the frustrated spin liquid Tb$_2$Ti$_2$O$_7$ theoretically. The low-energy effective Hamiltonian of this compound is derived by integrating out the excited crystal field states. It is ... -
Electronic Pre-Compensation of Intra-Channel Nonlinearity in a 10Gb/s Optical Transmission System
(University of Waterloo, 2007-07-30)We introduce several new algorithms for compensating intra channel nonlinearities in lightwave systems through electronic predistortion. These were optimized and modeled assuming realistic conditions at Nortel and ... -
Signatures of New Physics from the Primordial Universe
(University of Waterloo, 2007-08-29)During inflation quantum fluctuations of the field driving inflation, known as inflaton, were stretched by inflationary expansion to galactic size scales or even larger. A possible implication of inflation -- if it is ... -
Space and Particles at the Planck Scale
(University of Waterloo, 2007-09-10)The aim of this thesis is to summarize some results in two approaches to studying how quantum gravity may be relevant for experiments. The first approach starts off by stating that one of the questions a theory of quantum ... -
Time-Resolved Femtosecond Laser Spectroscopic Study of the Reaction
(University of Waterloo, 2007-09-11)Being currently the second and potentially becoming the first cause of death in North America, cancer has been the focus of researchers from various areas of science. Chemotherapy is one of the leading treatment options ... -
On-Shell Recursion Relations in General Relativity
(University of Waterloo, 2007-09-11)This thesis is a study of the validity and application of the on-shell recursion relations within the theory of General Relativity. These relations are also known as the Britto-Cachazo-Feng-Witten (BCFW) relations. They ... -
Holographic studies of thermal gauge theories with flavour
(University of Waterloo, 2007-09-12)The AdS/CFT correspondence and its extensions to more general gauge/gravity dualities have provided a powerful framework for the study of strongly coupled gauge theories. This thesis explores properties of a large class ... -
An apparatus for studying interactions between Rydberg atoms and metal surfaces
(University of Waterloo, 2007-09-27)A system suitable for studying interactions between ⁸⁷Rb Rydberg atoms and metal surfaces has been constructed. This thesis describes the design and construction of the apparatus, and some test results. Atoms in a vapor ... -
Forays into Mathematical Physics
(University of Waterloo, 2007-09-27)Two different works in mathematical physics are presented: A construction of conformal infinity in null and spatial directions is constructed for the Rainbow-flat space-time corresponding to doubly special relativity. ... -
The Physical Underpinning of Security Proofs for Quantum Key Distribution
(University of Waterloo, 2007-09-27)The dawn of quantum technology unveils a plethora of new possibilities and challenges in the world of information technology, one of which is the quest for secure information transmission. A breakthrough in classical ... -
Investigating Photonic Quantum Computation
(University of Waterloo, 2007-09-28)The use of photons as qubits is a promising implementation for quantum computation. The inability of photons to interact, especially with the environment, makes them an ideal physical candidate. However, this also makes ...