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  • Flow induced mixing in high aspect ratio microchannels

    Creator:
    Siripoorikan, Bunchong
    Abstract:
    Micro-fluid mixing is an important aspect of many of the various micro-fluidic systems used in biochemical production, biomedical industries, micro-energy systems and some electronic devices. Typically, because of size constraints and laminar flow conditions, different fluids may only have the opportunity to mix by diffusion, which is extremely rate limited....
    Resource Type:
    Masters Thesis

  • Laminate mixing in microscale fractal-like merging channel networks

    Creator:
    Enfield, Kent E.
    Abstract:
    A two-dimensional model was developed to predict concentration profiles from passive, laminar mixing of concentration layers formed in a fractal-like merging channel network. Both flat and parabolic velocity profiles were used in the model. A physical experiment was used to confirm the results of the model. Concentration profiles were acquired...
    Resource Type:
    Masters Thesis
    Full Text:
    ............................................................................... 8 3.1 Device Geometry

  • Application of controlled thermal expansion in diffusion bonding for the high-volume microlamination of MECS devices

    Creator:
    Pluess, Christoph
    Abstract:
    Diffusion bonding has been widely used within microlamination architectures for the fabrication of Micro Energy and Chemical Systems (MECS). MECS are microsystems with the ability to process bulk amounts of fluid within highly-parallel microchannel arrays capable of accelerated heat and mass transfer. Thus far, diffusion bonding of the microchannel arrays...
    Resource Type:
    Masters Thesis
    Full Text:
    devices. The conceptual design and the feasibility of such a device was validated and explored by

  • Diffusion bonding of large substrate MECS devices based on differential thermal expansion

    Creator:
    Chintapalli, Prashanth
    Abstract:
    Diffusion bonding has been widely used within microlamination architectures for the fabrication of Micro Energy and Chemical Systems (MECS). MECS are microsystems with the ability to process bulk amounts of fluid within highly-parallel microchannel arrays capable of accelerated heat and mass transfer. Thus far, diffusion bonding of microchannel arrays is...
    Resource Type:
    Masters Thesis

  • A photoactivable microfluidic device for heavy metal ion extraction

    Creator:
    Nammoonnoy, Jintana
    Abstract:
    The development of microfluidic devices for heavy metal extraction is presented in this dissertation. Various research areas, covering subjects from photochromic compound syntheses to microchip fabrication techniques are explored to develop microfluidic devices capable of extracting heavy metal ions from drinking water. Through integration of the beneficial characteristics of both...
    Resource Type:
    Dissertation
    Full Text:
    Photoactivable Microfluidic Device for Heavy Metal Ion Extraction Abstract approved

  • Magnetic particles for selective extraction of trace analytes in microfluidic devices

    Creator:
    Tennico, Yolanda H.
    Abstract:
    The development of micro total analysis systems (µTAS), also called “lab-on-a-chip”, or microfluidic analysis systems, is presented in this dissertation. Various research areas, covering subjects from magnetic particles synthesis to novel microchip fabrication techniques, are explored to develop a lab-on-a-chip system capable of performing magnetic bead-based bioassays. These devices are...
    Resource Type:
    Dissertation
    Full Text:
    the beads in a microfluidic device. This way, the challenges of microfabrication to create frits are

  • Development of a microchannel device for adsorption cooling application

    Creator:
    Asumpinpong, Kasidid
    Abstract:
    Single-layer and three-layer microchannel adsorption devices were fabricated by procedure that was newly developed. Aluminum was chosen for metal housing while the adsorption pair was silica gel and water. Each adsorption layer contained two layers of 250 μm-thick silica gel. Both silica gel layers opened to the same layer of...
    Resource Type:
    Masters Thesis
    Full Text:
    presented on February 10, 2009 Title: Development of a Microchannel Device for Adsorption Cooling

  • Fabrication and application of polymer based microfluidic devices

    Creator:
    Koesdjojo, Myra T.
    Abstract:
    The concept of reducing laboratory operations in scale such that they fit on a microfluidic chip has been met with great enthusiasm. Lab-on-a-chip devices promise to be cost effective to operate due to reduced reagent consumption, have the potential to offer shorter analysis times due to their short path lengths,...
    Resource Type:
    Dissertation
    Full Text:
    a single device for a complete on-chip analysis. The application of microfluidic technologies is

  • Semiconductor Nanocrystals as Detection Components in Microfluidic Analytical Systems

    Creator:
    Pengpumkiat, Sumate
    Abstract:
    Miniaturized and portable microfluidic analytical platforms have been widely explored in the broad field of chemical analysis. The concept of microfluidics offer a number of important advantages, including low reagent consumption, low-cost detection, high sample throughput, and shorter analysis time. Semiconductor nanocrystals or quantum dots have been extensively utilized in...
    Resource Type:
    Dissertation
    Full Text:
    analytical device. In this work, the development of microfluidic analytical devices incorporating

  • Improvements in synthesis and response techniques of ion-selective sensors

    Creator:
    Pylypiuk, Nataliia
    Abstract:
    Two improvements to the established procedures for synthesis and response detection of ion-selective optical sensors (optodes) were introduced. The first improvement addresses the drawback of organic dye (optode-localized chromoionophore) photobleaching. This positively impacts fluorescence response and allows for (1) direct measurement of hydrogen ion activity upon binding with the dye,...
    Resource Type:
    Masters Thesis
    Full Text:
    microfluidic device fabrication in this decade. While glass and silicon, which were heavily used in the