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 87 for “"microfluidic systems"”.
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Multiphase flows in polymer microfluidic systems
… is a promising technology for high throughput microfluidic bioassays. Separation and encapsulation of the target reagents with another inert fluid provide many advantages over single phase flow in microfluidic applications of biotechnology. In order to achieve these advantages and control these …
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Electrostatic actuators for portable microfluidic systems
… their obvious advantage in size. However, most microfluidic methods rely on equipment outside of the chip either for driving fluid flow (e.g., syringe pumps) or for taking measurements (e.g., lasers or microscopes). The energy and space requirements of the whole system inhibit portability and …
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Migration and separation in structured microfluidic systems
Spatially structured microfluidic channels in a state far from thermal equilibrium have been developed to address three fundamental problems in modern (bio-)analytics: the usually fixed separation criterion (e.g. a gel density is not changeable on the fly), the usually unknown polarizability …
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Test analysis & fault simulation of microfluidic systems
… a design, simulation and test methodology for microfluidic systems, with particular focus on simulation for test. A Microfluidic Fault Simulator (MFS) has been created based around COMSOL which allows a fault-free system model to undergo fault injection and provide test measurements. A post MFS …
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Development of Functional Polymeric Materials for Microfluidic Systems
Microfluidic Tectonics also provides a unique opportunity to study hydrogel properties. The relationship between the hydrogel crosslink density and the hydrogel volume has been studied in detail. In addition, dissolvable hydrogels based on de-crosslinking have been demonstrated, and the factors …
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Microelectromechanical and Microfluidic Systems for Scanning Probe Lithography
… In addition, the development of integrated microfluidic inking chips for chemical ink handling and SPL probe treatment further enhances the power of arrayed scanning probes. The inking chip can potentially coat an array of SPL tips with different inks simultaneously for multi-ink lithography.
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Microfluidic systems for cell transfection using sonoporation and electroporation
… in recent years. This research presents a microfluidic system for cell transfection using sonoporation and electroporation. This research has studied, designed, developed and tested the sonoporation system and electroporation system with certain biological cells. Ultrasonic standing waves, …
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On acoustic particle and cell manipulation in microfluidic systems
… applications. Acoustic particle manipulation systems can be used e.g. to separate, wash, sort, trap or distribute particles in microfluidic networks. This doctoral thesis starts by reviewing the fundamental fields of study needed to realize such systems and to understand their potential …
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High-temperature microfluidic systems for thermally-efficient fuel processing
Miniaturized fuel cell systems have the potential to outperform batteries in powering a variety of portable electronics. The key to this technology is the ability to efficiently process an easily-stored, energy-dense fuel. In many cases, use of these fuels requires a fuel processor-a high …
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Microfluidic systems for continuous crystallization of small organic molecules
… demonstrations of continuous crystallization in microfluidic devices, and illustrates their use for various applications related to crystallization of small organic molecules. Crystallization is an important process in a number of industries, including specialty chemicals, food, cosmetics, …
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Engineering synthetic biology routes for protein analysis using microfluidic systems
Microfluidics is increasingly being used in many areas of biotechnology and chemistry to achieve reduced reagent volumes, improved performance, integration, and parallelism, among other advantages. The sub-millimetre dimensions of microchannels tend to reduce reagent consumption and waste …
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Chip Scale Integrated Optical Sensing Systems with Digital Microfluidic Systems
… environment. Miniaturized and portable sensing systems are especially important for medical and environmental diagnostics and monitoring applications. Chip scale integrated planar photonic sensing systems that can combine optical, electrical and fluidic functions are especially attractive to …
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Flows inside cells: From natural cytoplasmic streaming to microfluidic systems
… new techniques based on thermoviscous flows in microfluidic systems, for applications in biology at the subcellular scale, microrobotics and beyond. Many existing methods for controlling particles in microfluidic devices are restricted to only two dimensions. In microfluidic settings, geometry …
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Development and Characterization of Fatty Acid-Coated Microgels Within Microfluidic Systems
… microstructures (mugels) were prepared within microfluidic devices and their properties were investigated. A photopolymerization technique was used to position pH-sensitive mugels within microchannels, and lipophilic acid chlorides were covalently grafted to these objects with an in situ …
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Efficient tools for the design and simulation of microelectromechanical and microfluidic systems
In air-packaged surface micromachined devices and microfluidic devices the surface to volume ratio is such that drag forces play a very important role in device behavior and performance. Especially for surface micromachined devices, the amount of drag is greatly influenced by the presence of the …
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Analysis of nucleation kinetics in pH-shift crystallization using agitated and microfluidic systems
… in small scale agitated vials and in a novel microfluidic device. The objectives were to gain a detailed understanding of the model system, to accurately determine solubility and supersaturation, collect nucleation rate data in the model system using an established methodology based on the …
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Electrostatic control of microfluidic systems for enhancement of nanoparticle separations and FET nanobiosensors
… is a favored method for numerous microfluidic applications for the capture of biological species, as well as, separation of organic and inorganic contaminants from water. However, given that ionic mobility (by far) exceed those of the suspended matter, the ions redistribute rapidly …
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Development of microfluidic systems for studying functional connectivity between in vitro neuronal co-cultures
… for investigating cellular mechanisms. Recently, microfluidic techniques have enabled new methods of patterning cells in vitro and can provide precise control of the extracellular environment. Compartmentalised devices have been created that allow for certain characteristics of neurological …
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