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 11 of 11 for “"microchemical systems"”.
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Microchemical systems for singlet oxygen generation
… development of more compact and efficient COIL systems, with a focus on the singlet oxygen generator (SOG) stage. Based on success in other applications, MEMS technology offers opportunities for improved reactant mixing, product separation, and heat transfer in SOGs. A MEMS singlet oxygen …
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Scalable multiphase microchemical systems for direct fluorination
Microchemical systems or microreactors refer to a new class of continuous reactors that have feature sizes in the submillimeter range. In particular, microfabricated chemical reactors are built using silicon-based photolithographic fabrication techniques that were originally developed to create …
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Microchemical systems for kinetic studies of catalytic processes
… microfabrication has enabled the development of microchemical systems for a variety of chemical and biological applications. This work focuses on the development of these systems for improved gas phase heterogeneous catalysis research. The catalyst development process often requires fundamental …
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Microchemical systems for rapid optimization of organic synthesis
… of potentially flammable or explosive systems. The use of microfluidic devices has shown several improvements when compared to traditional batch synthesis. The precise control of reaction conditions enabled within the microreactor format has proved advantageous for a wide range of …
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Microchemical systems for the synthesis of nanostructures : quantum dots
We have developed a continuous multi-stage high-temperature and high-pressure microfluidic system. High-pressure conditions enabled the use low molecular weight solvents that have previously not been available for quantum dot (QD) synthesis such as hexane or octane. The use of supercritical phase …
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Design and operation of microchemical systems for multistep chemical syntheses
This thesis focused on advancing the microchemical field from single device based demonstrations to systems that can perform multi-step series and parallel synthesis. Few examples of micro-separators and micro-pumps suited for miniaturized lab-on-a-chip systems for organic syntheses exist, so the …
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Microchemical systems for understanding of multiphase flows in upstream hydrocarbon and natural gas productions
… focuses on the design and the application of microchemical systems to understand multiphase flows in upstream hydrocarbon and natural gas productions. Offshore petroleum and natural gas catastrophes, such as the Deepwater Horizon spill of 2010, motivate the need to understand how to minimize …
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Laminar Flow-Based Microchemical Systems for Power Generation, Electrochemical Synthesis, and Biological Cell Studies
… multistream laminar flow is used in microfluidic systems for (1) biocatalytic synthesis of fine chemicals by microscale-enabled efficient regeneration of cofactors, as well as for (2) the study of intestinal stem cells on a surface that mimics their in vivo environment. In the first system, the …
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A novel microchemical system for rapid liquid-liquid chemistry
Microchemical systems are sub-milliliter systems for chemical processes. They are constructed using microfabrication techniques originally developed for the fabrication of microelectronic circuits. The reduction in size, as compared to conventional systems, offers several advantages in improvement …
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A microreactor system for high-pressure, multiphase homogeneous and heterogeneous catalyst measurements under continuous flow
… the time and cost of developing new catalyst systems. Microreactors enable the study of multiphase catalyst systems at pressures that were previously difficult to attain on the laboratory scale. The reduced length scales, characteristic of microchemical systems, provide additional benefits …
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Manufacturing all-polymer laminar flow-based fuel cells
… has led to the development of highly integrated microchemical systems for a broad range of applications. In recent years, polymers have assumed a leading role as substrate materials for these integrated devices (Chapter 1). Polymers have a wide range of material properties, such as mechanical …