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 11 of 11 for “"Diamond growth"”.
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A study of unusual diamonds from the George Creek K1 Kimberlite dyke, Colorado
Cathodoluminescence photomicrographs of diamonds from the George Creek Kl (section 28) kimberlite dyke in Colorado reveal complex intergrowth relationships between CO?-free and CO?-bearing diamond growth generations. The distribution of the CO?-bearing diamond in some specimens suggests that this …
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Studies of diamond film growth using atom beam sources
A reactor has been designed to investigate diamond growth by varying the ratio of carbon:hydrogen incident on both silicon and diamond substrates. A well characterised<br/>atomic hydrogen source developed in this laboratory is positioned at right angles to a carbon sputter source, which has been …
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Characterizing growth conditions in chlorine-activated diamond chemical vapor deposition
… chemical vapor deposition (CACVD) of thin diamond films. Numerical modelling at various levels of sophistication results in good trend and reasonable magnitude agreement between numerical and experimental data. Modelling suggests a low substrate temperature diamond growth mechanism by …
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Filament-Assisted Chemical Vapor Deposition of Diamond and Its Mechanism
Diamond films were deposited on various substrates by filament-assisted chemical vapor deposition (FACVD). Different experimental conditions were employed to determine the effects of parameters such as filament temperature, methane concentration in the starting gas, and substrate temperature on …
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High-Sensitivity Nitrogen-Vacancy Center Magnetometry: from DC to GHz
… using nitrogen-vacancy (NV) center ensembles in diamond has matured into an established discipline, with several proof of principle demonstrations in condensed matter physics, biological systems, electronics testing, and geomagnetism. However, despite the prospect of comparable magnetic field …
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Diamond seeding process for the heterogenous integration of high quality diamond on semiconductors
Diamond thin films grown by chemical vapor deposition (CVD) have a wide band gap, high hardness, chemical inertness, and high thermal conductivity, making them an attractive material for a wide range of applications. Due to high surface energy and low sticking probability of diamond, it is …
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The geology of kimberlites from the Fort a la Corne area, Saskatchewan, Canada
… disposition, to ultra-fine diagenetic mineral growth. A textural classification is then applied to the deposits. The volcanology of the Fort a la Cone kimberlites are then discussed: these are unusual in that the craters are preserved, and are broad and flat, rather than steep sided tapering …
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Scanning Tunneling Microscopy of Homo-Epitaxial Chemical Vapor Deposited Diamond (100) Films
… chemical-vapor-deposition (CVD) grown epitaxial diamond (100) films obtained in ultrahigh vacuum (UHV) with a scanning tunneling microscope (STM) are reported. A (2x1) dimer surface reconstruction and amorphous atomic regions were observed on the hydrogen terminated (100) surface. The (2x1) unit …
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Diamond-coated carbon fibres, the new generation of composites (CFRP)?
… CFRP components. To achieve this, highly doped diamond conductor grains are incorporated between the CF rows. This induces transverse conductive percolation between the CFs. The highly doped diamond is deposited as a polycrystalline coating on the surface of the carbon fibres prior to CFRP …
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Iron oxidation in (Mg,Fe)0: Calibration of the Flank method on synthetic samples and applications on natural inclusions from lower mantle diamonds
… is the most common mineral found in diamonds originating in the lower mantle (more than 50% of occurrences). It is well known that the Fe3+ concentration in (Mg,Fe)O is sensitive to oxygen fugacity, even at high pressures. Therefore, the determination of Fe3+/Fetot in such inclusions …