Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>There is a `universal' picture of a charged domain wall (CDW) in theoretical work, often depicted as residing in an infinite thickness film, charge neutral, and with no bias voltage applied. However, in experiment CDWs are shown with none of these assumptions. CDWs are produced in thin or ultra-thin films, the CDW is not charge neutral, and a bias voltage is being applied. We look… more Year: 2021, 2021
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Scotland, Kevin, Thesis advisor (ths): Vreugdenhil, Andrew J, Degree committee member (dgc): Zenkina, Olena, Degree committee member (dgc): Parnis, Mark, Degree committee member (dgc): Zelisko, Paul, Degree committee member (dgc): Atkinson, Bill, Degree granting institution (dgg): Trent University Abstract: <p>This thesis describes the synthesis, application and evaluation of a UV crosslinked 3-methacryloxypropyltrimethoxysilane-derived coating formulation. This is a two-component sol-gel system with 3-methacryloxypropyltrimethoxysilane (MaPTMS) and tetraethoxysilane (TEOS). Herein we show that if we change the co-solvent required for solubilizing MaPTMS from the more common methanol and… more Year: 2021, 2021
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Cole, Ryan, Thesis advisor (ths): Slepkov, Aaron D, Degree committee member (dgc): Atkinson, Bill, Degree committee member (dgc): Vreugdenhil, Andrew, Degree committee member (dgc): Tamblyn, Isaac, Degree granting institution (dgg): Trent University Abstract: <p>Spectral-focusing-based coherent anti-Stokes Raman scattering (SF-CARS) microscopy is a powerful imaging technique that involves temporally and spectrally stretching ultrashort laser pulses and controlling their frequency-time characteristics. However, a broader and more detailed understanding of the frequency-time characteristics of the laser pulses and signals involved, how they are… more Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The human cornea is required to exhibit specific material properties to maintain its regular shape under typical intraocular pressures which then allow for its correct optical functionality. In this thesis, the basis of continuum solid mechanics and the finite element method are introduced. We use finite element modelling to simulate the extension of an effective-1d, linear-elastic bar,… more Year: 2019, 2019
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Kallikragas, Dimitrios Theofanis, Thesis advisor (ths): Svishchev, Igor M, Degree committee member (dgc): Atkinson, Bill, Degree committee member (dgc): Kisch, Joey, Degree committee member (dgc): Chkrebtii, Anatoli, Degree granting institution (dgg): Trent University Abstract: <p>Supercritical water (SCW) exhibits unique properties that differentiates it from its low temperature behaviour. Hydrogen bonding is dramatically reduced, there is no phase boundary between liquid and gaseous states, heat capacity increases, and there is a drastic reduction of the dielectric constant. Efforts are underway for researchers to harness these properties in the applications of… more Year: 2019, 2019
Member of: Trent University Graduate Thesis Collection
Abstract: <p>We build a theoretical model for exploring the electronic properties of the two-dimensional (2D) electron gas that forms at the interface between insulating SrTiO3 (STO) and a number of perovskite materials including LaTiO3, LaAlO3, and GdTiO3. The model treats conduction electrons within a tight-binding approximation, and the dielectric polarization via a Landau-Devonshire free energy… more Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The present thesis explores the cold flow properties of biodiesel and the effect of vegetable oil derived compounds on the crystallization path as well as the mechanisms at play at different stages and length scales. Model systems including triacylglycerol (TAG) oils and their derivatives, and a polymer were tested with biodiesel. The goal was to acquire the fundamental knowledge that… more Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The appearance of a two-dimensional electron gas (2DEG) in oxide interfaces between strontium titanate (STO) and other materials has become a major area of study. The behaviour of the 2DEG in STO is not well understood in part because the dielectric properties of STO are not well characterized. The differential susceptibility has a major impact on the electric fields within strontium… more Year: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Johri and Bhatt found singular behavior near the band edge in the density of states as well as in the inverse participation ratio of the Anderson model. These singularities mark a transition to an energy range dominated by resonant states. We study the interacting case using an ensemble of two-site Anderson-Hubbard systems. We find the ensemble-averaged density of states and generalized… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Experiments have observed a two-dimensional electron gas at the interface of two insulating oxides: strontium titanate (SrTiO<sub>3</sub>) and lanthanum aluminate (LaAlO<sub>3</sub>). These interfaces exhibit metallic, superconducting, and magnetic behaviours, which are strongly affected by impurities. Motivated by experiments, we introduce a simple model in which… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Kallikragas, Dimitrios Theofanis, Thesis advisor (ths): Svishchev, Igor M, Degree committee member (dgc): Atkinson, Bill, Degree committee member (dgc): Tremiane, Peter, Degree committee member (dgc): Chkrebtii, Anatoli, Degree granting institution (dgg): Trent University Abstract: <p>Supercritical water (SCW) is the intended heat transfer fluid and potential neutron moderator in the proposed GEN-IV Supercritical Water Cooled Reactor (SCWR). The oxidative environment poses challenges in choosing appropriate design materials, and the</p><p>behaviour of SCW within crevices of the passivation layer is needed for developing a corrosion control strategy to… more
