Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Interfacial Chemistry"”.
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Applications of eScience to interfacial chemistry
The UK eScience initiative has undertaken the unenviable task of providing the scientist<br/>with computational tools to enhance the way in which science is performed.<br/><br/>In this work, the experimental measurement of polarisation dependent reflectance<br/>second harmonic generation at the …
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Lights, Camera, Reaction! The Influence of Interfacial Chemistry on Nanoparticle Photoreactivity
… remain concerning how changes to the NP surface chemistry that occur in natural waters will impact reactivity. This work seeks to investigate potential influences on photoreactivity – specifically the impact of functionalization, the influence of anions, and interactions with biological objects - …
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Instrument development for exploring the influence of interfacial chemistry on aerosol growth, aging, and partitioning of gases
Investigation of aerosol chemistry and growth under atmospheric conditions in a novel rotating aerosol suspension chamber with cavity ring-down spectroscopy provided key insight into the effect of pollutants and other vapors on the overall atmospheric lifetime of particulate matter. The Atmospheric …
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Understanding the Influence of Interfacial Chemistry in Core, Core/Shell and Core/Shell/Shell Quantum Dots on their Fluorescence Properties
<p>Colloidal semiconductor nanocrystals (quantum dots) have received a great deal of attention due to their superior size tunable properties and promising applications in many areas. Some of the most practical areas of their applications include light emitting diodes (LED), photovoltaic and …
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Field and laboratory investigation of ozone-indoor surface reactions: secondary emissions inventory and implications for indoor air quality
"Interfacial chemistry greatly influences human exposure to reactants and products in indoor environments. Emissions of volatile organic compounds, as a result of ozone-surface interactions, can lower an occupant's exposure to ozone, but increase indoor concentrations of odorous and carcinogenic …
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First-principles studies of perovskite thin films and heterostructures
… Pt/BaTiO₃ interfaces. We study how strain and interfacial chemistry affect the ferroelectricity of BaTiO₃/Ge and BaTiO₃/SrTiO₃/Ge heterostructures. We also discuss the development of two-dimensional conducting states created in BaTiO₃/SrTiO₃ heterostructures.
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Limitation of lithium fluoride (LiF) properties for passivation layer in organic solar cells application
… and ITO (Indium Thin Oxide) because LiF is an interfacial chemistry model for metal cathode that act as a buffer layer and coupling layer to enhance electron injection. Lithium Fluoride can also enhance metal cathode performance, characterize Lithium fluoride (LiF) thickness and test LiF as …
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Analytical and Experimental Investigation of Interphase and Dispersion Effects on the Mechanical Stiffness of Cellulose Nanocomposites
… interphase properties are highly dependent on interfacial chemistry between constituent phases. A comparison of the elastic modulus among 11 similar CNC-polymer systems revealed that CNC functionalization directly leads to improved mechanical stiffness. All analytical models demonstrated that …
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The Dynamics of Gas-Surface Energy Transfer in Collisions of Diatomic Gases with Organic Surfaces
Understanding interfacial interactions at the molecular level is important for interpreting and predicting the dynamics and mechanisms of all chemistry processes. A thorough understanding of the interaction dynamics and energy transfer between gas molecules and surfaces is essential for the study …
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Reflection Absorption Infrared Spectroscopic Studies of Surface Chemistry Relevant to Chemical and Biological Warfare Agent Defense
… as the primary analysis technique to study the interfacial chemistry of surfaces relevant to chemical and biological warfare agent defense. Many strategies utilized by the military to detect and decompose chemical and biological warfare agents involve their interaction with surfaces. However, …
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Statistical mechanical theory of equilibrium structure and miscibility of polymer nanocomposites: effects of polymer chemical heterogeneity and architecture, and nanoparticle surface corrugation and softness
… of diverse polymer nanocomposites (PNCs). Under chemistry-matched conditions and in the absence of interfacial attractions between a spherically smooth nanoparticle and the matrix fluid, the polymer-induced depletion attraction is dominant and induces entropic phase separation. The depletion …
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Cs-Pb-Br Core-shell Perovskite Microcrystals for Stability Improvement
… into this system not only aids in understanding interfacial chemistry but also provides strategies for the low-cost synthesis of stable luminescent materials. This resolves the issue of the extremely complex fabrication process for core-shell structures, which is prone to generating interface …
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Nanocrystal/J-aggregate constructs : chemistry, energy transfer, and applications
… is one of the most central subjects to modern chemistry. Two types of materials, semiconductor nanocrystals and J-aggregates of cyanine dyes, have been developed chiefly due to their potential for interacting with light in interesting and productive ways. At the same time, existing spectroscopy …
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Interface Engineering and Substrate Design for Anode-free Lithium Metal Batteries
… thesis investigates how substrate structure and interfacial design influence lithium deposition behaviour and reversibility. Emphasis is placed on understanding the role of copper (Cu) current collectors and two-dimensional (2D) materials in regulating lithium nucleation, growth, and SEI …
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Molecular tailoring of interfaces for thin film on substrate systems
… undergo thermo-mechanical cycling, which induces interfacial delaminations leading to failure of the overall device. The ability to tailor interfacial properties at the molecular level provides a mechanism to improve thin film adhesion, reliability and performance. This dissertation presents the …
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Development of hybrid inorganic/organic nanocomposites with enhanced thermal conductivity
… combine high thermal conductivity (TC) with low interfacial thermal resistance while meeting electrical, mechanical, and manufacturing constraints, most notably electrical insulation, thermal stability, some degree of mechanical compliance, and compatibility with scalable processing. A widely …
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Investigation of Alkali Metal-Host Interactions and Electrode-Electrolyte Interfacial Chemistries for Lean Lithium and Sodium Metal Batteries
… dissertation focuses on the investigation of the interfacial chemistries between alkali metal-carbon host interactions and the electrode-electrolyte interactions of the cathode and anode with boron-based electrolytes to establish design rules for "lean" alkali metal composite anodes and improve …
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Probing interfacial electronic structure in quantum materials using stem cathodoluminescence spectral imaging
… tantalate oxide (KTaO3, KTO) illustrates how interfacial chemistry and symmetry breaking drive the superconductivity. These two systems motivated the structure-property relation study here that is simultaneously structure aware and optically sensitive at atomic to nanoscopic scale. This thesis …
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Surface chemistry to control bulk reaction dynamics of native point defects in rutile titanium dioxide
… of ceramic oxide semiconductors using liquid interfacial chemistry. Preliminary results suggest that Oi or OHi may be injected in the bulk of rutile titanium dioxide. External stimuli such as UV illumination (to increase carrier concentration) and application of anodic potential (to promote …
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Slab-Geometry Molecular Dynamics Simulations: Development and Application to Calculation of Activity Coefficients, Interfacial Electrochemistry, and Ion Channel Transport
… to the prediction of activity coefficients, interfacial electrochemistry characterization, and ion transport through a model biological channel-membrane structure. The charged-sheets, 2-D Ewald, corrected 3-D Ewald, and corrected particle-particle-particle-mesh (P3M) methods were compared for …