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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 “"Polymer nanofibers"”.
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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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Deposition of Electroactive Polymers onto Polymer Nanofibers for Nerve Regeneration
… Electrospinning of the biocompatible polymer polycaprolactone (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. …
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Microfluidic flow-focusing device for the electrospinning of hollow polymer nanofibers
Polymer nanofibers hold much promise as advanced composite materials, and can be customized into matrices with special electrical, optical and biological properties. Electrospinning, which utilizes the destabilization of a fluid's surface in a strong electric field, has gained the most favor as a …
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The role of molecular length scale on the viscoplastic response of amorphous polymer nanofibers in the glassy state
Polymeric nanostructures are quite distinct because of the large ratio of surface-to-volume macromolecules which result in very different physical and mechanical behavior compared to bulk. Of special interest are nanostructures in which the constituent polymer is in its glassy state to provide …
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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 mechanical testing of single nanofiber
Polymer nanofibers exhibit properties that make them a favorable material for the development of tissue engineering scaffolds, filtration devices, sensors, and high strength lightweight materials. Perfectly aligned PLLA Nanofibers were fabricated by an electrospinning technique under optimum …
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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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From iPSCs to Engineered Heart and Liver Models: Modulating Genetic and Extracellular State for Maturity
… liver ECM, and electrospun natural polymer nanofibers, substantially enhanced HLC function relative to traditional substrates, partly through modulation of YAP signaling. Complementary efforts focused on improving cardiac models. We developed subtype-specific cryopreservation methods …
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Understanding emergence of supramolecular chirality in lyotropic conjugated polymers
… akin to those of natural systems. For conjugated polymers, understanding how to introduce and control chirality is critical to unlocking their full potential in future chiral electronics. This thesis focuses on elucidating the emergence of supramolecular chirality in conjugated polymers within …
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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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Gas Jet Process for Production of Sub-micron Fibers
… was developed for production of fibers from polymer solutions with diameters ranging from a few tens of nanometers to a few micrometers. The process, termed gas jet nanofibers (GJF), bears several similarities and contrasts with electrospinning and melt-blowing processes. The method …