Browsing Physics and Astronomy by Title
Now showing items 1-20 of 623
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1H MAS NMR Study of Water on Pd-MCM-41
(University of Waterloo, 2015-06-18)Hydrogen spillover represents one of the most promising avenues to achieve hydrogen storage at the density required for transportation applications. The spillover phenomenon, however, is a topic of much debate, with many ... -
A 4d Lorentzian Spin Foam Model With Timelike Surfaces
(University of Waterloo, 2010-10-07)We construct a 4d Lorentzian spin foam model capable of describing both spacelike and timelike surfaces. To do so we use a coherent state approach inspired by the Riemannian FK model. Using the coherent state method we ... -
Above Bandgap Hyperpolarization Mechanism in Isotopically Purified Silicon and Optimal Bayesian Experiment Design for $T_1$ Estimation
(University of Waterloo, 2018-05-24)This thesis is concerned with the mechanism underlying the above bandgap illumination Dynamic Nuclear Polarization (DNP) of phosphorus donors in isotopically purified silicon-28. Two proposed DNP models are introduced and ... -
Abundance Matching with the Galaxies of the Virgo Cluster and the Stellar-to-Halo Mass Relation
(University of Waterloo, 2012-09-27)Using data from the Next Generation Virgo Cluster Survey and high-resolution simulations of Virgo cluster-like halos, we determine the stellar-to-halo mass relation (SHMR) for subhalos, using the technique of abundance ... -
Achievable Polarization for Heat-Bath Algorithmic Cooling
(University of Waterloo, 2015-08-17)Highly pure quantum states play a central role in applications of quantum information science, both as initial states for quantum algorithms and as resources for quantum error correction. Controlled preparation of pure ... -
Adhesion of Two Cylindrical Particles to a Soft Membrane Tube
(University of Waterloo, 2012-09-26)The interaction of nanoparticles with biological systems, especially interactions with cell membranes, has been a subject of active research due to its numerous applications in many areas of soft-matter and biological ... -
Adsorption of surface-modified silica nanoparticles to the interface of melt poly (lactic acid) and supercritical carbon dioxide
(ACS Publications, 2015-04-28)With the purpose of fabricating polymer nanocomposite foams and preventing coalescence in foaming processes, the interfacial tension of poly (lactic acid) (PLA) -silica composites is investigated in this work. Synthesized ... -
Adventures in Holography
(University of Waterloo, 2014-07-11)In this thesis, inspired by the holographic theories, we study a variety of interesting problems in gravity, condensed matter and cosmology. First, we explore the entanglement entropy of a general region in a theory of ... -
An ALMA View of Molecular Gas in Brightest Cluster Galaxies
(University of Waterloo, 2018-09-25)In this thesis I use ALMA observations to map the distribution and kinematics of molecular gas in the brightest cluster galaxies of three galaxy clusters: 2A0335+096, RXJ0821+0752, and RXCJ1504-0248. The goal is to understand ... -
An alternative derivation of orbital-free density functional theory
(AIP, 2019-05-28)Polymer self-consistent field theory techniques are used to derive quantum density functional theory without the use of the theorems of density functional theory. Instead, a free energy is obtained from a partition function ... -
Aluminium-Palladium Transition Edge Sensors
(University of Waterloo, 2008-09-15)A superconducting Transition Edge Sensor (TES) can be used to make the most sensitive thermometer which operates in a very narrow temperature range. The thin film bi-layer fabrication details are discussed as well as ... -
Amended Model of Large Scale Dark Matter Structure
(University of Waterloo, 2020-09-03)Dark matter makes up around a quarter of the total energy density in the universe, but its identity remains elusive. Current ways of studying dark matter have centered around its macroscopic properties, such as density ... -
Amplitudes in the Spin Foam Approach to Quantum Gravity
(University of Waterloo, 2017-07-31)In this thesis, we study a Spin Foam model for 4D Riemannian quantum gravity, and propose a new way of imposing the simplicity constraints that uses the recently developed holomorphic representation. Rather than imposing ... -
Analytical and Numerical Studies of 2D XY Models with Ring Exchange
(University of Waterloo, 2012-08-31)In this thesis we take several different analytic and numerical approaches to studying the classical J-K model. This model describes an interacting many-body system of spins with continuous symmetry which interact via ... -
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 ... -
Application of a constant hole volume Sanchez–Lacombe equation of state to mixtures relevant to polymeric foaming
(Royal Society of Chemistry, 2018)A variant of the Sanchez–Lacombe equation of state is applied to several polymers, blowing agents, and saturated mixtures of interest to the polymer foaming industry. These are low-density polyethylene– carbon dioxide and ... -
Application of the Flag-State Squashing Model to Numerical Quantum Key Distribution Security Analysis
(University of Waterloo, 2020-09-18)The squashing model proof technique is a powerful tool in proving security of quantum key distribution (QKD) protocols since it reduces the dimension of the associated computational problem from infinite to finite. In the ... -
Applications of Adiabatic Approximation to One- and Two-electron Phenomena in Strong Laser Fields
(University of Waterloo, 2010-12-20)The adiabatic approximation is a natural approach for the description of phenomena induced by low frequency laser radiation because the ratio of the laser frequency to the characteristic frequency of an atom or a molecule ... -
Applications of Entanglement and Nonlocality
(University of Waterloo, 2021-09-20)Entanglement and nonlocality are two of the features demonstrated by quantum systems which give rise to new possibilities in a variety of fields such as communication technology, cryptography and the study of fundamental ... -
Applications of Raman Spectroscopy
(University of Waterloo, 2014-08-22)This thesis is devoted to exploring experimental applications of Raman spectroscopy. The ability of Raman spectroscopy to investigate the vibrational modes of a molecule was explored in several studies. The work included ...