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 9 of 9 for “"Chemical precursors"”.
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Microstructural evolution of epitaxial dielectric films derived from chemical precursors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Investigation of Reactive Electrokinetic Processes for Permeability Reduction in Hardened Cement Paste
… work examined the feasibility of transporting chemical precursors into hardened cement paste pores using an electric field and causing them to undergo a chemical reaction that results in blocking the pores and reducing permeability. The chemical precursors, silicate and aluminate solutions and …
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Producing transition metal oxides as cathodes for aqueous zinc-ion batteries via Ultra-Short Laser Pulses for In-situ Nanostructure Generation (ULPING)
… challenges due to the need to balance electrochemical efficiency with environmental and health considerations. This thesis introduces a cutting-edge laser processing method to fabricate battery electrodes using a fiber-pulsed laser. This approach is efficient and environmentally friendly, as …
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The Kinetics of Ni/Al Reactive Intermetallic Composites
… materials is studied. The use of amorphous precursors is found to speed up the reaction as well as increase the heat of reaction, starting as it does from a higher energy state. Amorphous Ni recrystallizes at elevated temperatures and this process has been investigated (both thermal and …
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Rapid and green fabrication of psuedocapacitor electrode by utilizing novel ULPING technique
… and is deemed green because it doesn't require chemical precursors or produce waste. In this work, we investigate multiple parameters of a pulsed laser in the formation of an oxide layer directly grown on the irradiated surface of a transition metal. We used our lab-developed Ultra-short Laser …
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Catalytic Activity of Molybdenum-Dioxo Complexes
… increase the yields for specific diols. Electrochemical studies were performed on the more sterically demanding catalyst to gain a fundamental understanding of the proton transfer and electron transfer processes that are involved in transforming the molybdenum-dioxo catalyst into the active …
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New precursors and chemistry for the growth of transition metal films by atomic layer deposition
… Unfortunately, there is a limited number of chemical precursors available that have high thermal stability, reactivity, and vapor pressure suitable for ALD film growth to occur. These properties collectively contribute to the lack of suitable transition metal precursors available for use in …
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Pandemia, coca y conflicto armado: evidencia para Colombia
Los eventos catastróficos como los desastres naturales o las epidemias pueden profundizar los conflictos como resultado del desplazamiento de recursos y fuerza militar de la guerra a atender la emergencia. Así mismo, algunas condiciones previas al evento como la diversidad de actores armados y la …
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Chemical approaches to the improved performance of nanoelectronic devices
… a d-electron reorganization process. The electrochemical characterizations of all the species show slow kinetics in the oxidation process, whereas the reduction remains reversible across all the scan rates used. This result is consistent with the model that the spin reorganization from d6 high …