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Dissertations / Theses on the topic 'Solid state physics'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Egan, John Mathew. "Solid state diffusion in Pd₂Si." Master's thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/22141.

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The atomic transport processes ocurring in the Pd/Si system have been investigated. The Pd₂Si system has been studied to try and establish the mechanism(s) of diffusion by which the growth of Pd₂Si proceeds under thermal annealing. Using a deposited Ti marker, the dominant moving species during Pd₂Si formation in the temperature range 250-400°C has been determined to be silicon. Palladium transport appears to occur during the initial stages of formation of Pd₂Si. Once several hundred angstrom of Pd₂Si has been formed, palladium transport seems to be replaced by silicon transport. Silicon trace

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2

Esser, M. J. Daniel. "Diode-end-pumped solid-state lasers." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1020.

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3

Jackson, P. "Dipolar coupling in solid-state NMR." Thesis, Durham University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379058.

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4

Prakash, Arati Prakash. "Magneto Thermal Coupling in Solid State Transport." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1514502118670282.

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5

Brown, Marco J. "Selective inversion in solid-state deuteron NMR." W&M ScholarWorks, 1996. https://scholarworks.wm.edu/etd/1539623900.

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Deuteron NMR selective inversion (SI) is developed to study slow molecular motions in solids. Theoretical and practical aspects of selective inversion of spin-1 nuclei in solids are presented. Differences between powdered solids and liquids are considered. Double sideband modulated (DSBM) shaped pulses are shown to improve the performance of SI pulses. DSBM and DANTE selective pulses are compared for off-resonance SI applications. Common spin-{dollar}{lcub}1{rcub}\over{lcub}2{rcub}{dollar} shaped pulses are tested for suitability to solid state deuteron NMR. Simple, short pulses are shown to b

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6

Vlassarev, Dimitar. "DNA Characterization with Solid-State Nanopores and Combined Carbon Nanotube across Solid-State Nanopore Sensors." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10310.

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A DNA molecule passing through a nanopore in a liner and sequential fashion allows for unprecedented interrogation of the polymer. Adding transverse electrodes that are comparable in size and sensitive to the DNA molecule, can further the attempts to rapidly sequence DNA. Carbon nanotubes are comparable in size and interact strongly with the DNA molecule. This makes them an excellent choice for integration with nanopores. Only the section of the carbon nanotube in immediate proximity to the nanopore should be sensitive to the DNA molecules. Atomic layer deposition of metal-oxides passivates th

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7

Johnson, D. R. "The microstructure of all-solid-state batteries." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375262.

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8

Elder, Ian F. "Diode-pumped two micron solid-state lasers." Thesis, University of Strathclyde, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284812.

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9

Calmes, Lonnie Kirkland. "Solid-state Raman image amplification." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288920.

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Amplification of low-light-level optical images is important for extending the range of lidar systems that image and detect objects in the atmosphere and underwater. The use of range-gating to produce images of particular range bins is also important in minimizing the image degradation due to light that is scattered backward from aerosols, smoke, or water along the imaging path. For practical lidar systems that must be operated within sight of unprotected observers, eye safety is of the utmost importance. This dissertation describes a new type of eye-safe, range-gated lidar sensing element bas

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10

Van, der Westhuizen Gysbert Johannes. "Numerical design of an optical solid-state amplifier." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/21915.

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11

Lynch, Jonathan William. "Laser (Cooling) Refrigeration in Erbium Based Solid State Materials." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/358684.

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Physics<br>Ph.D.<br>The objective of this study was to investigate the potential of erbium based solid state materials for laser refrigeration in bulk material. A great deal of work in the field has been focused on the use of ytterbium based ZBLAN glass. Some experiments have also reported cooling in thulium based solid state materials but with considerably less success. We proposed that erbium had many attractive features compared to ytterbium and therefore should be tried for cooling. The low lying energy level structure of erbium provides energy levels that could bring obtainable temperatur

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12

Canessa, E. "Statistical physics of colloidal dispersions." Thesis, University of East Anglia, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314412.

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13

Orr, Simon Timothy. "Multinuclear solid-state NMR of fuel cell materials." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/35532/.

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This thesis describes the application of multinuclear solid-state NMR to three materials systems: first, components of polymer-based proton-exchange fuel cells including the fluoropolymer membranes (Chapter 4) and the precious metal supported catalysts (Chapter 5); secondly, the formation of a complex bismuth niobium aluminoborosilicate glass-ceramic with novel dielectric properties (Chapter 6); finally, platinum (II) dialkyldithiophosphates which belong to a class of compounds (metal dialkyldithiophosphates) some of which are used in mineral separation processing (Chapter 7). A full investiga

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14

Bhattacharya, Prodipta. "Solid state NMR studies of ferroelectric relaxor materials." Thesis, University of Warwick, 2005. http://wrap.warwick.ac.uk/66666/.

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Multi-nuclear solid state nuclear magnetic resonance has been used to investigate the local atomic structure of the relaxor ferroelectric materials, lead magnesium niobate titanate (PMN-PT) and sodium potassium bismuth titanate (NKBT). In addition to these two series of materials, numerous precursor and model niobate compounds have also been analysed in order to gain a insight into the structures and phases present in these materials. The PMN-PT series was investigated using 93Nb, 207Pb and 170 NMR techniques. A total of 14 PMN-PT samples, from pure PMN to PMN-90PT, were investigated in order

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15

Vlachou, Maria C. "17O solid state NMR study of ceria systems." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/108288/.

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Ceria is a highly commercial, valuable material. Its diverse set of real-world applications demonstrates its far-reaching influence on modern society. Indeed, one only has to consider its extensive employment as an essential component of automotive, three-way catalysis (TWC) for reducing pollutants in vehicular exhaust gases; a technology that is used on a daily basis by millions of people, to appreciate its importance. Its popularity is partially due to its extraordinary oxygen storage capacity, i.e. its ability to release and store oxygen through redox reactions mediated by the two oxidation

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16

Kuan, Aaron. "Ultra-Thin Solid-State Nanopores: Fabrication and Applications." Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493498.

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Solid-state nanopores are a nanofluidic platform with unique advantages for single-molecule analysis and filtration applications. However, significant improvements in device performance and scalable fabrication methods are needed to make nanopore devices competitive with existing technologies. This dissertation investigates the potential advantages of ultra-thin nanopores in which the thickness of the membrane is significantly smaller than the nanopore diameter. Novel, scalable fabrication methods were first developed and then utilized to examine device performance for water filtration and sin

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17

Maker, Gareth Thomas. "Diode laser pumped solid state lasers." Thesis, University of Southampton, 1990. https://eprints.soton.ac.uk/397281/.

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This thesis deals with the development of diode laser pumped solid state lasers. The earliest work presented enabled 125W peak power, single frequency Q-switched pulses to be obtained from a 100mW diode laser pumped Nd:YAG laser. Using a 500mW diode laser as a pump source for C.W. Nd:YAG and Nd:YLF oscillators an Yb:Er fibre laser was pumped, producing 0.75mW C.W. power at a wavelength of 1.56µm. Acousto-optic mode-locking techniques were used to provide C.W. mode-locked pulse durations in Nd:YAG and Nd:YLF of 55ps and 18ps respectively, at repetition rates of 240MHz. Frequency modulation mode

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18

Haydock, Sarah Amanda. "In situ vibrational spectroscopy of thin organic films confined at the solid-solid interface." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270369.

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19

Westwood, Stephen Mark. "The physics of magnetic particle inspection." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/5525/.

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This thesis describes the results of an investigation into the Physics of Magnetic Particle Inspection. This is a non destructive technique used to detect the presence of surface breaking cracks in ferrous metals. On applying a magnetic ink to the surface of the part being magnetised, particles will be attracted towards any regions of flux discontinuity. This allows the defect to be visible to the eye. The main areas of study were the magnetic properties of the inks used, a computer simulation of the indication process and work of a more practical nature concerning MPI. From the magnetic measu

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20

Drummond-Brydson, Richard. "Electron energy loss spectroscopy in solid-state chemistry." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237906.

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21

Cheng, Chi-Feng. "Solid-state NMR studies of mesoporous molecular sieves." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243004.

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22

Brierley, Richard Thomas. "Far-from-equilibrium many-body physics in solid state systems." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610799.

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23

Bates, Matthew. "Theoretical investigation of solid state cooling using spin models." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/79564/.

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A mean field spin model coupled to a thermal model of a solid is used as a description of the electrocaloric effect in relaxor ferroelectrics at both first and second order transitions. This theoretical model is also used in efforts to find the tricritical point of transitions to maximise the adiabatic temperature change due to the electrocaloric effect while minimising the hysteresis losses in a cooling cycle. The electrocaloric effect is the adiabatic temperature change exhibited by a material under the sequential application then removal of electric fields. Relaxor ferroelectrics are materi

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24

Blackband, S. J. "NMR imaging of liquid-solid systems." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356019.

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25

Fleming, F. A. "Proton conduction in solid germanium phosphates." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356446.

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26

Bollig, Christoph. "Single-frequency diode-pumped solid-state lasers." Thesis, University of Southampton, 1997. https://eprints.soton.ac.uk/378587/.

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The work discussed in this thesis covers two broad areas: Novel techniques for the single-frequency operation of miniature, diode-pumped solid-state lasers and the high-power (i.e. multi-watt) operation of diode-bar end-pumped lasers in the eyesafe 2 μm wavelength region. A monolithic Nd-doped phosphate glass laser is described, in which uni-directional, hence single-frequency operation is enforced by the acousto-optic effect in the laser medium. The loss difference for the two counter-propagating waves relies on an acousto-optic self-feedback mechanism which can yield high loss differences ev

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27

Goddard, Yanina Anatolievna. "Solid state NMR characterization of conductive polyanilines." W&M ScholarWorks, 2004. https://scholarworks.wm.edu/etd/1539623435.

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Different forms of ring deuterated polyaniline with different conductivity have been characterized by solid state deuteron nuclear magnetic resonance.;Quadrupole echo (QE) spectra of all forms of polyaniline consist of a superposition of lineshapes for nearly rigid aromatic rings and a small fraction of rings which undergo fast 180?? flips. The intensity of the fast flipping component is temperature dependent and different for conductive emeraldine salt (ES) and non-conductive emeraldine base (EB). This is a manifestation of the different structure and morphology of these polymers.;Simultaneou

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28

Dauphinais, Guillaume. "Fabrication, structural relaxation, and flow in solid-state nanopores." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107651.

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Single solid-stat nanopores have been fabricated in free-standing layers of amorphous silicon nitride. Using a focused electron beam and a focused ion beam, diameters ranging from about 0.7 nm to a few hundred nanometerswere achieved. Structural relaxation of nanopores fabricated by focused electron beam was observed. Depending on the initial diameter and on the length of the nanopores, two distinct phases for the relaxation process were found. An experimental setup for themeasurement of pressure-driven mass flow of helium through a single nanopore was built. The conductance of nanopores with

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29

Reams, Patrick William. "Solid-state N.M.R. studies of platinum and tin compounds." Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6793/.

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High-resolution solid-state N.M.R. studies of dilute spins are now possible using cross-polarisation and MAS techniques. A systematic evaluation has been undertaken to determine their applicability to spin-½ metal nuclei, in particular (^195)Pt and (^119)Sn. In addition, an extensive (^13)C and (^31)p solid-state N.M.R. study has been carried out on a selection of Pt(II) complexes, supplying information on isotropic (scalar) coupling constants and shielding anisotropy. The majority of (^119)Sn and (^195)Pt spectra exhibit a multitude of spinning sidebands due to the large shielding anisotropy

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30

Gullans, Michael John. "Controlling Atomic, Solid-State and Hybrid Systems for Quantum Information Processing." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11146.

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Quantum information science involves the use of precise control over quantum systems to explore new technologies. However, as quantum systems are scaled up they require an ever deeper understanding of many-body physics to achieve the required degree of control. Current experiments are entering a regime which requires active control of a mesoscopic number of coupled quantum systems or quantum bits (qubits). This thesis describes several approaches to this goal and shows how mesoscopic quantum systems can be controlled and utilized for quantum information tasks.<br>Physics

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31

Marasli, Necmettin. "The measurement of solid-liquid surface energy." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260154.

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32

Codd, Sarah. "3DFT NMR imaging of solid-like materials." Thesis, University of Kent, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318105.

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33

Young, Kevin Edward. "Ionic conductivity in silicate - containing solid electrolytes." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335654.

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34

Akeroyd, Frederick Anthony. "The sticking of molecules to solid surfaces." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309088.

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35

Smith, Thomas Benjamin. "Entanglement and measurement of solid-state qubits." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/24894.

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A full-scale quantum computer requires physical qubits that can be controlled with high precision and accuracy. Unfortunately, few state-of-the-art qubits can perform all their elementary operations (preparation, measurement, single-qubit gates and two-qubit gates) with sufficient fidelity. In this thesis, we investigate alternative schemes for such operations in solid-state qubits. Specifically, two-qubit gates and measurements, which are often the noisiest of the four. We first provide a preliminary introduction to quantum computing, and describe how quantum information can be encoded and

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36

Zailer, Isaac. "The physics and fabrication of low-dimensional hole systems." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339624.

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37

Glasson, Philip Henry. "Surface state electrons in a helium micro-channel." Thesis, Royal Holloway, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272323.

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38

Jin, Gongjiu. "DLTS studies of surface state effects in GaAsFETs." Thesis, Lancaster University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316292.

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39

Noble, Christopher John 1967. "Applications of magnetic resonance in materials science and solid state physics." Monash University, Dept. of Physics, 2001. http://arrow.monash.edu.au/hdl/1959.1/9064.

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40

Kaiser, John Michael. "New probes of spin physics and correlation in solid-state NMR." Diss., [Riverside, Calif.] : University of California, Riverside, 2009. http://proquest.umi.com/pqdweb?index=0&did=1899476631&SrchMode=2&sid=3&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1269285773&clientId=48051.

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Thesis (Ph. D.)--University of California, Riverside, 2009.<br>Includes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed March 10, 2010). Includes bibliographical references. Also issued in print.

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41

Sean, David. "On the mobility of partially denatured DNA in gel electrophoresis: a theoretical investigation." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28742.

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There are technologies which exploit a rapid reduction of the gel electrophoretic mobility of DNA arising from partial denaturation. The underlying phenomenon behind these experiments---the mechanisms which reduce the mobility---are not very well understood. Such is the purpose of my thesis. The first chapter provides a brief introduction to the field of polymer physics. The subjects covered are carefully chosen to directly relate to the forthcoming research. There is a published semi-empirical formula used to model the rapid decrease of mobility which is largely considered to be consistent wi

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42

McGowan, Shona. "«In situ» study of amorphous semiconductor crystallization by dynamic transmission electron microscopy." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86999.

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Amorphous silicon is an important material of particular interest in the context of thin film transistors and display technologies. It also provides an ideal model system for the study of crystallization dynamics, and to this end we have investigated the crystallization of thin amorphous semiconducting films, including silicon and germanium, in the Dynamic Transmission Electron Microscope (DTEM) at Lawrence Livermore National Laboratory.<br>Crystallization is initiated in the DTEM by a laser pulse that deposits sufficient heat into the system to activate the transition. A variable time delay a

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43

Yu, Victor. "Optics and chemical vapour deposition of graphene monolayers on various substrates." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97052.

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Graphene-based devices are typically fabricated by exfoliation on substrates such as SiO2/Si. This is a disordered surface which can degrade the intrinsic properties of graphene such as mobility. Hence, in order to optimize device performance, we investigated the possibility to deposit graphene on more ordered surfaces such as GaAs, despite the difficulty in locating exfoliated graphene on such substrates. We show that the optical contrast of graphene can be greatly enhanced by increasing theincident angle of the light on the substrates (SiO2 and GaAs). In the second part, we move beyond the s

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44

Feng, Zimin. "SymGF: a symbolic tool for quantum transport theory." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107697.

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In this thesis, I report the development and application of a symbolic derivation tool named "SymGF'' - standing for Symbolic Green's Function, that can automatically and analytically derive quantum transport expressions and the associated Keldysh nonequilibrium Green's functions (NEGF). Quantum transport happens in open systems consisting of a scattering region coupled to external electrodes. When there are strong electron-electron interactions in the scattering region, analytical derivations of the Green's functions can be very tedious and error prone. Running on a personal computer, SymGF d

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45

Michaud-Rioux, Vincent. "Real space DFT by locally optimal block preconditioned conjugate gradient method." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110628.

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In condensed matter physics, atomistic first principle calculations are often necessary to achieve a microscopic understanding of the observed experimental phenomena and to make quantitative predictions of physical properties. In practice, atomic scale systems have irregularities (e.g. surface roughness) or defects (e.g. substitutional atoms or vacancies) that are too strong to be ignored or treated as small perturbations. In this thesis, we report the development of a real space DFT code for studying atomic scale systems from first principles. Our code, named MatRcal, which stands for "Matlab

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46

Wang, Quanyong. "Crossover in directional solidification and C60 island morphology." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32260.

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We simulate directional solidification using a phase field model solved with an adaptive finite element method. For small surface tension anisotropy directed at 45 degree relative to the pulling direction, we have observed three types of morphology: Dendritic, seaweed, and cellular. The seaweed pattern is characterized by alternating tip splitting and the branches have no orientation preference. A crossover from the seaweed to dendritic morphology was noticed when lowering the thermal gradient, consistent

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47

Dean, Cory. "A study of the fractional quantum hall energy gap at half filling." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40784.

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A complete understanding of the the ν = 5/2 fractional quantum hall effect (FQHE) continues to be among the most exciting problems in semiconductor physics. It is widely believed that this unique electron state is described by the Moore-Read Pfaffian wavefunction, resulting from a BCS-like pairing of composite fermions. In recent years this wavefunction has received special interest owing to its non-abelian quantum statistics which underlies a new paradigm for fault tolerant quantum computation. However, in spite of several theoretical advancements, an unequivocal experimental verification of

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48

Pouliot, Dominique. "Models of binary fluid phase separation in the inertial regime." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=94930.

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This thesis presents a theoretical analysis of the late stage kinetics of phase separation in a binary ﬂuid. The infrared (long-wavelength) and long-time properties of the ﬂuid system are studied using the techniques and ideas of the momentum shell renormalization group (RG). The non-linear eﬀective one-ﬂuid description of Sain and Grant is generalized to include memory eﬀects through the construction of two non-Markovian noise correlators, and the full incompressible Navier-Stokes equation (NSE) is considered. The structure of the non-Markovian force-force correlators is justiﬁed heuristicall

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49

Hagedorn, Till. "Atomic contacts characterized by force and current." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96938.

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Contacts between atoms present the reduction of an electronic system to the smallest scale accessible at the present. Field ion microscopy (FIM) and simultaneous scanning tunneling microscopy (STM) and atomic force microscopy (AFM) were used to characterize atomic contacts between a tungsten (W(111)) STM-tip and a gold (Au(111)) sample. The STM-tip was imaged with atomic resolution using FIM and reconstructed in a three dimensional ball model. Force and current were measured simultaneously while the tip approached an atomically flat Au(111) sample to form a contact.A detailed description of th

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50

Payette, Christopher. "Transport in weakly coupled vertical double quantum dots: single-particle energy level spectroscopy and hyperfine interaction effects." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96713.

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Performing transport measurements on weakly coupled vertical double quantum dots, we study by magneto-resonant-tunneling spectroscopy, single-particle energy spectra of the constituent dots over a wide energy window. The measured energy spectra are well modeled overall by ideal spectra calculated for elliptical and parabolic in-dot-plane confinement potentials. However, in regions where single-particle energy levels are naively expected to cross, we observe pronounced level anti-crossing behaviour and strong resonant current variations (both enhancement and suppression). Within a coherent tunn

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