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 17 of 17 for “"Single walled carbon nanotubes (SWNT)"”.
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Polymer synthesis for corona phase molecular recognition based on single-walled carbon nanotubes
… work within Strano Research Group shows that single-walled carbon nanotubes (SWNT) wrapped with methacrylic acid-styrene heteropolymer (MA-ST) can be used for specific corona phase molecular recognition (CoPhMoRe) of Vardenafil, a small molecule drug. This project is a follow-up study on …
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Wet-spinning of neat single-walled carbon nanotube fiber from 100+% sulfuric acid
Single-Walled Carbon Nanotubes (SWNT) have been found to have excellent solubility in super acids such as 100+% H2SO4, and chlorsulfonic acid. The solutions display liquid crystalline behavior at high concentrations in super acids. Traditional wet-spinning method has been applied to SWNTs to make …
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Theoretical and simulation tools for electron transfer and chain reactions in single walled carbon nanotubes
Single walled carbon nanotubes (SWNT) are cylindrical sheets of graphene whose electronic structures and diameters are determined by their chiralities. Current synthetic methods produce batches of nanotubes containing a variety of electronic properties. The separation of these mixtures into …
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Biopolymer-mediated analyte detection via photoluminescence modulation of single-walled carbon nanotubes
Single-walled carbon nanotubes (SWNT) have unique photo-physical properties which, through the work in this dissertation, are investigated and harnessed to produce optical sensors with unique capabilities. Early studies of the modulation of SWNT optical properties—both photoluminescence and …
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Electronic detection of molecules on the exterior and molecular transport through the interior of single walled carbon nanotubes
Single walled carbon nanotubes (SWNT) are unique materials with high surface to volume ratio and all atoms residing on the surface. Due to their tubular shape both exterior and interior of the SWNT are available for interaction with other molecules. One-dimensional electronic structure of SWNT is …
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Single-walled carbon nanotubes as near infrared fluorescent sensors : characterization, biological and analytical applications
… improve understanding of biological signaling. Single-walled carbon nanotubes (SWNT) are rolled sheets of graphene and can be either semiconducting or metallic depending on the angle of rolling and the diameter of the tube. Semi-conducting SWNT are one of only a few types of molecules that …
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Carbon nanotube-based sensors for label-free protein detection
Optical biosensors based on fluorescent single-walled carbon nanotubes (SWNT) are a promising alternative to conventional biosensors due to the exceptional photophysical properties of SWNT. Such sensors can enable highly-sensitive, selective, and real-time detection of biological analytes. However, …
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Sensitivity, selectivity, and stability of a palladium-loaded single-walled carbon nanotube methane gas sensor
… provide many advantages over electronic sensors. Single-walled carbon nanotubes (SWNT) can be used as optical sensors, as SWNTs emit fluorescence upon photoexcitation. The photoluminescent (PL) intensity upon excitation depends on the electronic structure of the SWNT. Here, SWNTs are loaded with …
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Photochemical studies of single-walled carbon nanotube ozonides and alpha-azoxy ketones
… problems in chemistry: studying properties of carbon nanotube ozonides and products of their decomposition and determining behavior of alpha-azoxy radicals. This work demonstrates that interaction of ozone with single-walled carbon nanotubes (SWNT) results in formation of 1,2,3-trioxolanes …
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An In Vitro Assessment of The Potential for Engineered Nanoparticles to Modulate Innate Immunity
… and pristine semi-conducting (0.8 nm) single-walled carbon nanotubes (SWNT) was used to assess the capacity of ENPs to transcriptionally activate a NF- κB reporter gene in these cell lines. All the ENPs were characterized to determine their morphology, surface charge, and degree of …
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Modulation of Single-Walled Carbon Nanotube Fluorescence via Enzyme Reaction, Controlled Aggregation and Hydrogel Swelling Towards a Continuous Glucose Sensor
… of an implantable continuous analyte sensor. Single-walled carbon nanotubes (SWNT) have a tunable excitation and emission in the near-infrared (nIR) and do not photobleach. Additionally, their quasi one-dimensional nature renders them sensitive to molecular adsorption events. We explore …
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Carbon Nanotube Behavior in Represntative Old Leachate
… of this study was to evaluate the behavior of single walled carbon nanotubes (SWNT) in mature landfill leachate. To achieve this goal, the electrokinetic properties and relative stability of the carbon nanotubes were measured in representative mature landfill leachate. Additionally the mobility …
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Label-free carbon nanotube sensors for glycan and protein detection
… plasmon resonance methods, and fluorescent single walled carbon nanotubes-(SWNT). Advantages of carbon nanotube sensors include their sensitivity and ability to multiplex. The focus of this work has been to develop carbon nanotube-based sensors for glycans and proteins. Before detailing the …
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Characterization and Modeling of the Ionomer-Conductor Interface in Ionic Polymer Transducers
… been incorporated in the electrode including single-walled carbon nanotubes (SWNT), polyaniline (PANI) powders, high surface area RuO2, and carbon black electrodes. The DAP provided the tool which enabled us to study the effect of electrode architecture on performance of ionic polymer …
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Advanced purification of aligned arrays of single-walled carbon nanotubes
… the large variety of semiconducting materials, single walled carbon nanotubes (SWNTs) are extremely attractive due to their outstanding charge transport properties and ultrathin bodies. One of the most daunting challenge, however, is in creating large-area, perfectly aligned arrays of purely …
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GLUCOSE ELECTROOXIDATION
… from a colloidal dispersion (sol) onto different carbonaceous conductive supports: glassy carbon, carbon cloth and graphite paper. The gold sol was prepared reducing an aqueous solution of tetrachloroauric acid with sodium borohydride. The gold particles (average size 100 nm) exhibit better …
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DNA-Templated Surface Alignment and Characterization of Carbon Nanotubes.
Carbon nanotubes are appealing materials for nanofabrication due to their unique properties and structures. However, for carbon nanotubes to be used in mass-fabricated devices, precise control of nanotube orientation and location on surfaces is critical. I have developed a technique to align …