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 157 for “"Graphitic"”.
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Heteroatom-Doped Graphitic Materials for Energy Storage
… Li- and Na-ion batteries. Turbostratic doped graphitic materials were produced through pyrolysis of organic material. In Chapter 2, investigations into nitrogen-doping are made. Alterations to the synthetic procedure in combination with thorough structural and compositional analysis helps in …
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Interfacial Microstructures in Divorced Graphitic Eutectics (Tem, Study)
Interfacial microstructures in two divorced graphitic eutectics have been investigated using transmission electron microscopy (TEM). Both systems show a coarse minor precipitate, graphite, whose morphology depends strongly on trace elements.
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Wettability of graphitic materials and their application in separation
Graphitic carbon-water interaction or wettability of graphitic materials has received significant interest due to extraordinary thermal, physical, and electrical properties of different forms of graphitic carbon and influence of wettability in condensation, adhesion, separation, tribology, and …
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Graphitic Surface Attachment by Single-Stranded DNA and Metal Nanoparticles
Graphene and carbon nanotubes are extreme mechanical and electronic materials which have been the subjects of intense study and development since their discoveries. While many of their intrinsic properties have been discovered, their interactions with other materials are only beginning to be …
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Rapid Transient Cooling Utilizing Flash Boiling and Desorption on Graphitic Foams
Transient thermal systems present significant challenges. Neglecting the time constants
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Investigation of nanoscale mechanisms driving erosion and pitting in graphitic carbon
… nanoscale, these carbon fibers are composed of graphitic units at various orientations. The current thesis is focused on the understanding of reaction kinetics and gas-phase behavior on hyperthermal oxidative pitting and erosion of graphite at the nanoscale. The results demonstrate the …
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Nucleation and evolution of graphitic particles in atmospheric pressure microwave plasma
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Electrochemical mechanisms in nano-structured graphitic and redox-active polymeric architectures
One of the greatest challenges for our modern society is developing efficient and low-cost electrochemical energy storage and conversion systems for stationary and transportation applications. Understanding the detailed electrochemical mechanisms in energy-related materials with new designs and …
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On developing a graphitic white iron for metal-to-metal wear systems
… in metal-to-metal wear systems, by developing a graphitic white iron to increase thermal diffusivity of the wear components. One of the premium materials commonly used in current metal-to-metal wear systems is Fe15Mo18Cr and field returned parts were characterized as part of this study. Failure …
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Thermal Characterization of Graphitic Carbon Foams for Use in Thermal Storage Applications
<p>Highly conductive graphitic foams are currently being studied for use as thermal conductivity enhancers (TCEs) in thermal energy storage (TES) systems. TES systems store energy using the latent heat capacity of phase change materials (PCMs). Due to the low thermal conductivity of most PCMs, TCEs …
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Manipulating Conjugation in electronic polymers and graphitic materials: chemosensors, precursor routes, and self-assembly
In Chapter 1, we synthesize dithienobenzotropone-based conjugated alternating copolymers by direct arylation polycondensation. Post-polymerization hydride reduction furnishes cross-conjugated copolymeric hydrogels that undergo phosphorylation and subsequent ionization upon exposure to chemical …
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Growth of narrow band gap semiconductor nanowires on silicon and graphitic substrates by droplet epitaxy
… and structurally superior InAs NWs on graphitic substrates has been identified. Vertically well-aligned and thin InAs NWs were obtained in a narrow growth window of 420-450oC while a high yield of NWs was realized within a restricted domain of growth rate and V/III flux ratio. Compared …
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NOVEL SYNTHETIC METHODS AND APPLICATIONS OF POROUS MATERIALS: AEROGEL FOAMS, METALLIC AEROGELS, AMORPHOUS AND GRAPHITIC CARBON AEROGELS
… foams, pure metallic aerogels, amorphous and graphitic carbon aerogels, and their applications. I. Polyurethane based aerogel foams were synthesized with an aliphatic triisocyanate and ethylene glycol through a pressurized (7 bar) sol-gel method. The foam-like structure is prepared without any …
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Electrochemical analysis of interface structures and functionalization in graphitic carbons for Na-ion and flow battery electrodes
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Low Temperature Electrical Transport in 2D Layers of Graphene, Graphitic Carbon Nitride, Graphene Oxide and Boron-Nitrogen-Carbon
… technique was utilized to exfoliate graphene and graphitic carbon nitride samples in isopropyl alcohol. Chemical reduction technique was used to reduce graphene oxide (rGO) by utilizing ascorbic acid (a green chemical) as a reducing agent. Detailed structural and morphology characterization of …
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Wettability of graphitic materials and development of graphene layer as barriers to prevent the surface degradation induced by water.
Graphitic materials, thanks to the lamellar structure and chemical stability, are of particular interest to realize barriers against the degradation of surface properties induced by water. Many studies showed that water could be a source of degradation of surface properties. To develop a method to …
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Synthetic Molecular Models for the Oxygen Reduction Active Sites in Heteroatom-Doped Graphitic Electrocatalysts: Linking Heterogeneous and Homogeneous Electrocatalysis
The development and deployment of low-temperature fuel cell technologies require that low-cost platinum-free catalysts for the oxygen reduction reaction (ORR) that are highly active, selective, and durable be created. To this point, the advancement of potential replacement catalysts such as metal- …
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Investigating physical properties of novel carbon-based materials
… carbon nanotubes, and high thermal conductivity graphitic foams. The experimental technique of Raman laser spectroscopy yields structural information about all of these materials that we are investigating, including how the covalent bonds between the carbon atoms in the base of the material …
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