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.
Results
Showing 1 to 20 of 79 for “"Thermodynamic stability"”.
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Thermodynamic stability of Vo2-Metal thin films
Thermodynamic stability of VO2 in contact with metals was conducted on solid thin metal films. The VO2 film was synthesized on a corning glass under optimized condition parameters using rf magnetron reaction sputtering. The samples with structure glass/VO2 were then taken for optical …
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Classical and thermodynamic stability of black holes
We consider the stability of black holes within both classical general relativity and the semiclassical thermodynamic description. In particular, we study linearised perturbations and their contributions to the gravitational partition function. Exploring the connection between classical and …
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Thermodynamic stability and implications of anisotropic boundary particles
… torques, has implications in microstructural stability and illustrates avenues for future research.
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Thermodynamic stability and activity volcano for perovskite-based oxide as OER catalyst
… curve. However, little is known about the thermodynamic stability and the catalytic activity of perovskite surface reconstructions. Reconstructions such as defect, adsorbate, and steps are widely detected in experiments. They are caused by realistic environment during fabrication, …
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Thermodynamic stability of perovskite and lanthanum nickelate-type cathode materials for solid oxide fuel cells
… In this study, the aforementioned instability of LNO has been addressed by compositional tailoring of LNO: lanthanide doped ceria (LnxCe1-xO2,LnDC)composite. By increasing the lanthanide dopant concentration in the ceria phase close to its solubility limit, the LNO phase has been …
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The Freezing Mechanisms of Perovskite Relaxor Ferroelectrics and the Thermodynamic Stability of their Ferroelectric States
… The source of the glassy freezing and the thermodynamically stable phase in the relaxor regime are still uncertain. This thesis attempts to explain the entities and interactions involved in the emergence of glass-like behavior, and to describe their thermodynamically stable phase at low …
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Advancing fast relaxation imaging to determine protein stability and folding kinetics on poly(n-isopropyl acrylamide) films
… this assumes that PNIPAM does not perturb the stability of biomolecules. Previous analytical and spectroscopic techniques have not been able to confirm this assumption due to limitations in detection of proteins on surfaces. Additionally, protein absorption above the lower critical solution …
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The Pt₈V ordering transformation in Pt 11 at. % V
… been studied. The study included determining the thermodynamic stability of Pt₈V, the kinetics of Pt₈V ordering transformation and the strengthening due to the presence of the ordered phase. Transmission electron microscopy, using election diffraction and dark and bright field imaging, and X-ray …
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Thermodynamic Characterisation of Amyloid Fibrils
… in current approaches. One such gap is the thermodynamics of amyloid fibrils and how clinical agents modify the stability of fibrils, either positively or negatively. Thus far there has been a focus on the kinetic stability of amyloid fibrils due to the development and availability of …
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Voltage Controlled Non-Volatile Spin State and Conductance Switching of a Molecular Thin Film Heterostructure
… a post-Moore’s era of design. Requirements for thermodynamic stability at room temperature, fast (Ghz) switching, and low energy cost narrow the list of candidates. Here we show voltage controllable, room temperature, stable locking of the spin state, and the corresponding conductivity change, …
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Development and Application of Covalent-Labeling Strategies for the Large-Scale Thermodynamic Analysis of Protein Folding and Ligand Binding
<p>Thermodynamic stability measurements on proteins and protein-ligand complexes can offer insights not only into the fundamental properties of protein folding reactions and protein functions, but also into the development of protein-directed therapeutic agents to combat disease. Conventional …
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The kinetics and thermodynamics of clay mineral reactions
… the diagenesis of clastic rocks. The kinetic and thermodynamic stability of clays is in general poorly understood. This dissertation research measured the rate of transformation of kaolinite to muscovite/illite and developed a method to estimate clay mineral thermodynamic stability. Clastic rock …
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Interfacial physics in meniscus-confined electrodeposition and its applications for fabricating electronic structures
… was developed and studied. It exploits the thermodynamic stability of a microscale or nanoscale liquid meniscus to direct-write pure metallic three-dimensional structures of designed shapes and sizes in an ambient air environment. This technique is cost-effective to implement and is based on …
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Production of phosphorus alloys through thermal reactions and electrochemical reduction of molten apatite
… as an examplary alloy both for its incredible thermodynamic stability and for its mechanical properties. Molten hydroxyapatite decomposes as it melts into two solid phosphorus rich phases, tricalcium phosphate and tetracalcium phosphate. Fluourapatite behaves in a similar manner, albeit at a …
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Synthetic and Mechanistic Studies of Carbamate-Directed Lithiation Reactions: (1) Assymetric Deprotonation of N-Boc Indolines. (2) the Relationship Between Reactivity and Directing Group Orientation
… carbamates have increased configurational stability relative to more flexible analogs. An increase in the rate of epimerization of $\alpha$-lithio carbamates in the presence of $N,\ N,\ N\sp\prime ,\ N\sp\prime$-tetramethylethy lenediamine suggests that the rate-determining step for …
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An alloy selection and processing framework for nanocrystalline materials
… particularly if the nanocrystalline state is thermodynamically stable against grain growth. This thesis builds upon previous models for selecting alloy combinations that lead to thermodynamic stability against grain growth, by developing frameworks that extend to negative enthalpy of mixing …
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Distribution of thiols in the northwest Atlantic Ocean
… distribution of cysteine and glutathione and thermodynamic stability of copper complexes suggests that Cu(I)-dithiol complexes may be the dominant surface ocean copper and thiol species. Mercury-thiol complexes were also present in thermodynamically modeled seawater, which may provide a vector …
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Distribution of thiols in the northwest Atlantic Ocean
… distribution of cysteine and glutathione and thermodynamic stability of copper complexes suggests that Cu(I)-dithiol complexes may be the dominant surface ocean copper and thiol species. Mercury-thiol complexes were also present in thermodynamically modeled seawater, which may provide a vector …
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Dynamical perspective of stability in glasses
… out-of-equilibrium materials, and their stability plays a central role in determining both their physical properties and their technological performance. This Thesis investigates how glass stability influences microscopic dynamics over a wide range of timescales, from picosecond …
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