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 210 for “"Nanofibers"”.
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Genipin-crosslinked electrospun collagen nanofibers
… In this research collagen type I nanofibers were fabricated using electrospinning. Collagen nanofibers were unstable in aqueous environments, and thus crosslinking was required. Glutaraldehyde, which is cytotoxic to cells, is currently the chemical crosslinking agent used by most …
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Field ionization from carbon nanofibers
The Micro Gas Analyzer project aims to develop power-efficient, high resolution, high sensitivity, portable and real-time gas sensors. We developed a field ionizer array based on gated CNTs. Arrays of CNTs are used because of their small tip radii and high aspect ratio which yields high electric …
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Electrospun nanofibers with tunable electrical conductivity
Electrospinning is a convenient method to produce nanofibers with controlled diameters on the order of tens to hundreds of nanometers. The resulting nonwoven fiber mats are lightweight, highly porous, and have high specific surface areas around 1 to 100 m2/g. Combined with the high electrical …
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Glucose Biosensor Using Electrospun Mn2O3-Ag Nanofibers
… highly porous Mn<sub>2</sub>O<sub>3</sub>-Ag nanofibers were fabricated by a facile two-step procedure (electrospinning and calcination) and then employed as the immobilization matrix for glucose oxidase (GOD) to construct an amperometric glucose biosensor. A notable enhancement of direct …
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Electrospun nanofibers : opportunities in environment and energy
… one-dimensional nanostructures in the form of nanofibers. It has recently been successfully used to produce semiconducting metal oxide nanofibers which have been used in chemiresistive gas sensors and dye-sensitized solar cells. Electrospun gas sensors and solar cells have already been shown to …
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Fabrication of multifunctional nanocomposites using functionalized carbon nanofibers
… nanocomposites) containing functionalized carbon nanofibers (CNFs) were developed. The methodologies address current manufacturing issues of nano-engineered polymeric composites by effectively incorporating functionalized CNFs into polymer matrix and glass fiber layers. For polymeric …
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Supramolecular Nanofibers - Preparation, Structure-Property Relations, and Applications
Conventional polymer nanofibers have gained tremendous interest in the last years in the fields of catalysis as templates, in medicine as tissue engineering, in functional textiles as protective suits, and especially in air filtration as filter media. Generally, nanofibers are prepared by top-down …
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High strength carbon nanofibers derived from electrospun polyacrylonitrile
Carbon nanofibers (CNFs) derived from polyacrylonitrile (PAN) have not yet demonstrated the high tensile strength and Young’s modulus of their microscale counterparts. This is due to the current lack of understanding of the effect of electrospinning conditions on the quality of PAN precursor …
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Formation of polymer nanofibers from electrified fluid jets
The formation of polymer nanofibers from fluid jets in· an electric field, also referred to as electrospinning, has been studied. Controlling the fiber properties requires a detailed understanding of how a millimeter-diameter fluid jet emanating from a nozzle is transformed into solid fibers that …
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Multiscale modeling and analysis of nanofibers and nonwoven materials
… which is a technique for the production of nanofibers with diameters down to the range of a few nanometers. The nonwoven structure has unique features, including interconnected pores and a very large surface to volume ratio, which enable such nonwoven materials to have many applications. The …
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Hierarchical Assembly of Polymeric Nanofibers for Advanced Material Applications
Polymer nanofibers are gaining importance due to their wide applicability in diverse fields, such as tissue engineering, fuel cells, photonics and sensors. For these applications, manufacturing aligned polymer nanofibers with precisely controlled morphology and well characterized mechanical …
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The Growth and Characterization of Alkylphosphonic Acid Self-Assembled Nanofibers
… formation and properties of novel Self-Assembled Nanofibers (SANs) created by the treatment of Al with solutions of short chain-length alkylphosphonic acids (APAs) in ethanol. A special emphasis was placed on the creation of APA SANs isolated from the immersed Al source and development of analysis …
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Use of Chemically Crosslinked Polymer Nanofibers for Hyperthermophilic Enzyme Immobilization.
North Carolina State University Theses Chemical Engineering.
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Deposition of Electroactive Polymers onto Polymer Nanofibers for Nerve Regeneration
… (PCL) is used to produce porous and ordered nanofibers that resemble the structure and organization of the extracellular matrix, providing a suitable environment to promote the adhesion and directional growth of nerves. These oriented nanofibers are conformally coated with the inherently …
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STRUCTURE AND PROPERTIES OF PIEZOELECTRIC NANOFIBERS FOR ELECTROMECHANICAL COUPLING APPLICATIONS
… piezoelectric polymer and lead-free ceramic nanofibers for electromechanical coupling applications. Polyvinylidene fluoride (PVDF) nanofibers were fabricated by electrospinning process using a precursor solution modified with hydrated salt. Introducing hydrated salts in PVDF precursor …
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Mechanical and interfacial properties of carbon nanofibers for polymer nanocomposites
… and failure response of vapor grown carbon nanofibers (VGCNFs) has been unexplored despite the large volume of carbon nanofiber composites fabricated today. Three grades of VGCNFs, namely as-fabricated, high temperature heat treated, and graphitized/surface oxidized, with average diameters …
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