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 744 for “"CVD"”.
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CVD synthesis of graphene
… scalable and compatible with present industrial CVD reactors used for making carbon nanotubes.
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Silver transport in CVD silicon carbide
… study silver transport through and release from CVD silicon carbide. Results of these experiments show that silver does not migrate via classical diffusion in silicon carbide. Silver release is, however, likely dominated by vapor transport through cracks in SiC coatings. The results of silver ion …
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Transport studies on CVD-grown graphene
… thesis, we report transport studies performed on CVD-grown graphene. We perform resistivity and hall measurements on a large-area sample at 4' K. We measure the carrier mobility of the sample and find it to be on the order of 1000 cm2/Vs, whereas monolayer graphene regularly exhibits much higher …
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X-ray Texture Analysis of CVD Diamond
No abstract prepared.
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Abscheidung von (Kohlenstoff)Nanostrukturen mittels PE-HF-CVD
… hot filament chemical vapor deposition“ (PE-HF-CVD). Es sollen Abscheidungsbedingungen für die Synthese von unterschiedlichen Kohlenstoffnanostrukturen gefunden und optimiert werden. Die Darstellung und Charakterisierung von „phasenreinen“, mehrwandigen, tubularen Röhren auf unterschiedlichen …
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Phenotyping for a personalised approach to CVD prevention
Cardiovascular disease (CVD) prevention requires interventions at the level of the population (public health) and at the level of individuals (medical care). Therapeutic options to reduce the risk of CVD among at risk individuals are increasingly available, but access to and implementation of these …
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CVD Grown Graphene-Based Materials: Synthesis, Characterization and Applications
… begins with the chemical vapor deposition (CVD) growth of graphene in the form of either atomically thin films or 3D porous structures; which involves the synthesis of several structures such as nitrogen-doped graphene, graphene-carbon nanotube hybrids, in-plane graphene-boron nitride …
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Grundlegende Untersuchungen zum CVD-Wachstum Fe-gefüllter Kohlenstoff-Nanoröhren
… war: - die Optimierung und Modellierung des CVD-Wachstums von Fe-gefüllten CNTs aus Ferrocen, - die Auswahl geeigneter Schichtsysteme für das orientierte Wachstum Fe-gefüllter CNTs, - eine umfassende Charakterisierung der Nanostrukturen und deren Bezug zu den Wachstumsparametern, - die …
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Fabrication of carbon nanoscrolls from patterned CVD-grown graphene
A planar process to roll lithographically defined sheets of chemical-vapor-deposition-grown graphene into carbon nanoscrolls by solvent evaporation is attempted. Graphene is observed to roll up by 350 nm on average from unrestrained edges, forming partial nanoscrolls. Resistance is measured while …
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Analysis of a diamond CVD process using computer simulation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Pulsed Sheet Electron Beam Plasma-Assisted CVD of Silicon Films
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997.
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Study of Buoyancy -Induced Flows in a Prototypical CVD Reactor
… operating conditions in the prototypical CVD reactor was sought. Film growth rate shows time varying pattern due to the transient operating conditions. But it oscillates between two end steady states. Thus, it is observed that film growth rate and uniformity cannot be improved by applying …
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Advances in the CVD growth of graphene for electronics applications
… and scalable way to reveal the defectiveness of CVD grown graphene. This approach relies on a graphene passivated etching process that was found to be sensitive to structural defects in the graphene film. A strong correlation between the density of structural defects and the electron mobility …
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The Influence of Deprivation on Cardiovascular Disease (CVD) in Rural Indians
Background: Cardiovascular disease (CVD) is a major cause of premature death in India, in which rural population experiences more vulnerability due to socio-economic absence, limited health literacy and poor access to healthcare. Despite the national prevention programs, intervals in service …
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Electrical characterization of plasma-enhanced Cvd silicon nitride dielectric on copper
In this work, a novel metal-insulator-metal (MIM) capacitor process is introduced and integrated in a Copper Interconnect technology, whose smallest feature size is 0.18mum process, which has good yield, reliability and repeatability. The MIM uses a one-photomask process and hence is termed as the …
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Development of germanium based sulphide glass by chemical vapour deposition (CVD)
Chalcogenide glasses, especially sulphide glasses, are becoming more and more important for the fabrication of optoelectronic devices in part because of the high nonlinearity, strong photosensitivity and several other unique properties they have. Chalcogenide glasses are normally fabricated by a …
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Nanoscale studies of CVD graphene and poly(3-hexylthiophene) thin films.
… graphene grown by chemical vapor deposition (CVD) and poly(3-hexylthiophene) (P3HT) thin films, which have great potential for use in transparent solar cells. This work outlines my findings in understanding and characterizing different substrate effects on graphene film growth, particularly …
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Co-reactant interactions with CVD surfaces: Activation or passivation of growth
… that affords growth of high quality VN films by CVD: the VN surface is catalytic for ammonia decomposition, hence, NHx groups are generated efficiently, which drives transamination to completion at low temperatures. I also extend this idea to low temperature growth of superconductive molybdenum …
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Development of an internally heated FC-CVD reactor for CNT synthesis
… floating catalyst chemical vapor deposition (FC-CVD) which generates some of the highest quality CNTs directly into the final form from the reactor. However, it was found that FC-CVD is not readily scalable with a low production rate per volume of reactor (< 2 …
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Chemical vapor deposition (CVD) growth and optimal transfer processes for graphene
… synthesis methods, chemical vapor deposition (CVD) has been a focus of attention as the most promising and cost-efficient deposition techniques, with advantages of its excellent repeatability and controllability, to produce large area graphene crystals on transition metal catalyst substrates. …
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