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.
Results
Showing 1 to 20 of 39 for “"multimaterial"”.
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Multimaterial acoustic fibers
The emergence of multimaterial fibers that combine a multiplicity of solid materials with disparate electrical, optical, and mechanical properties into a single fiber presents new opportunities for extending fiber applications well beyond optical transmission. Fiber reflectors, thermal detectors, …
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Multimaterial fiber electronics
… into fibers is rapidly expending, numerous new multimaterial fiber architectures can be envisioned and fabricated. High-melting temperature metals, compound materials, composite, conductive or ferroelectric polymers: the broad diversity of these materials' nature and properties, combined with …
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Multimaterial multifunctional fiber devices
Optical fibers and semiconductor devices differ significantly in their properties and their processing approaches. The latter require an assembly of metal, insulator and semiconductor materials into complex geometries with small feature sizes (sub 100 nm), while maintaining high quality interfaces. …
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Multimaterial rectifying device fibers
… an order-of- magnitude compared to all previous multimaterial device fibers.
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Multimaterial multifunctional fibers for biomedical applications
… This thesis introduces broad application of multimaterial multiplexed fibers in biomedical areas. I first describe the development and application of spatially expandable multifunctional fiber-based probes for mapping and modulating brain activities across distant regions in the deep brain …
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Multimaterial Fiber Sensors for Physical Measurements
… semiconductor devices, and composites, to create multimaterial sensors with versatile sensing capabilities. However, the high viscoelasticity of polymer materials and the limitations of existing sensing mechanisms constrain the precision and stability of these sensors. This research focuses on …
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Manipulating fluids and fields In multimaterial fibers
… of years to manipulate fluids. The emergence of multimaterial thermal drawing as a method to fabricate fibers with precise spatial control of a broad range of materials, such as polymers and metals, enables the integration of new functionalities into these traditionally single material tools. In …
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Multimaterial Fibers for Biosensing Application Using Electrochemistry
… the use of electrodes as its sensing component. Multimaterial electrode-embedded fibers are used as the sensing electrode and the electrode material presented is platinum (Pt). Platinum is employed because of its biocompatibility property. The electrodes are placed in the fiber by the method of …
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Design and fabrication of multimaterial electrohydrodynamic-jet deposition system
Electrohydrodynamic jet (E-jet) printing has emerged as a high resolution alternative to other forms of direct solution-based fabrication approaches, such as ink-jet printing. This thesis discusses the design, integration and operation of a unique E-jet printing platform. The uniqueness lies in the …
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Surface Modification of Multimaterial Multifunctional Fibers Enabling Biosensing Applications
During the last decades, the continuing need for faster and smaller sensors has indeed triggered the rapid growth of more sophisticated technologies. This has led to the development of new optical-based sensors, able to detect and measure different phenomena using light. Furthermore, material …
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Multimaterial fiber microelectromechanical systems based on electrostrictive P(VDF-TrFE-CFE)
… developed approach for the fabrication of multimaterial fiber devices presents a unique opportunity to realize MEMS in a novel form. In this paper a thermally drawn MEMS fiber device based on P(VDF-TrFE-CFE) ferrorelaxor terpolymer is presented. Electromechanical actuation capabilities of …
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Heat Flux Reconstruction in a Multimaterial Gauge with Multiple Embedded Temperature Sensors
Creating heat flux maps is one of the major data reduction tasks of ground-test hypersonic facilities. The ability to embed multiple high-frequency sensing elements offers improved performance of over other types of heat flux gauges, such as Schmidt-Bolter gauges, when there is significant lateral …
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Multifunctional Multimaterial Fibers for Sensing and Modulation in Wearable and Biomedical Applications
… research on the development of multifunctional multimaterial fibers that are designed and produced for sensing and modulation applications in wearable and biomedical fields. Fiber-shaped devices have gained significant attention due to their potential in human-machine interface applications. …
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Topology optimization of multimaterial and multiscale structures beyond elasticity: brittle fracture and ductile plasticity
… topology optimization framework for designing multimaterial and multiscale structures subjected to elasticity, plasticity, and fracture under both small and large deformations. The framework embraces both rigorous physics-based methods and general machine learning approaches to predict design …
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Multimaterial, multifunctional fiber-based designs for integration into minimally invasive and wearable, translatable medical devices
Fiber-based medical devices have the potential to contribute to both research and clinical applications through their multifunctionalities, material properties, compact sizes, and customizable geometries. This thesis discusses current developments and testing of such devices. A minimally invasive …
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Engineering Biomedical and Bioinspired Fiber Devices via Thermal Drawing
… a unique strength on a scalable production of multimaterial fibers. Based on various properties of multiple materials in a single fiber, multifunctional fibers have been studied for diverse applications such as sensing, battery, computing, and biomedical devices. In this thesis, I develop …
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Phase separation in thermally-drawn fibers: From porous domains to structured Si-Ge spheres
… of polymer or glass-based fibers with complex multimaterial internal structures, which grant them functions ranging from optical transmission to chemical detection. However, while a wide range of materials have been successfully drawn in various phases - such as metals, semiconductors, and …
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Materials selection and processing for reliable neural interfaces
… Using a thermal drawing process (TDP), multimaterial fibers comprised of polymer-metal composites can be fabricated to create flexible, microelectrode arrays. These fibers can be further processed after the TDP, using selective etching to reduce the diameter of the probe. These devices …
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Hierarchical design of morphing shape-memory polymer structures via topology optimization
… for the topology optimization algorithm. Multimaterial topology optimization combined with the thermo-mechanical programming cycle is used to optimally distribute the active and passive SMP materials within the design domain. This allows us to tailor the response of the structures to …
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Receptive Skins : towards a somatosensitive architecture
… idea of the receptive skin-a sensate and dynamic multimaterial interface for environmental mediation. This suggests that by departing from the view that buildings are static artifacts, we may instead begin to see buildings as organic, living entities. Through the development of a working …
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