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    Lab-on-a-Chip Optical Immunosensor for Pathogen Detection

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    Author
    Heinze, Brian Carl
    Issue Date
    2010
    Keywords
    Avian Influenza
    Immunoassay
    Microfluidic
    Microparticle
    Optical Detection
    Committee Chair
    Yoon, Jeong-Yeol
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    This dissertation develops technology for microfluidic point-of-care (POC) immunoassay devices, divided into three papers, and explores the use of a quartz crystal microbalance for real time monitoring of blood coagulation in a fourth paper. The concept of POC testing has been well established around the world. With testing conveniently brought to the vicinity of the patient or testing site, results can be obtained in a much shorter time. There has been a global push in recent years to develop POC molecular diagnostics devices for resource-limited regions where well equipped centralized laboratories are not readily accessible. POC testing has applications in medical/veterinary diagnostics, environmental monitoring, as well as defense related testing. In the first paper, we demonstrated the use of latex immunoagglutination assays within a microfluidic chip to be an effective and sensitive method for detecting the bovine viral diarrhea virus. In the second paper the feasibility and general ease of integrating liquid core optical components onto a microfluidic lab-on-a-chip type device, for point-of-care AI diagnosis is demonstrated. In the third paper particle agglutination assays, utilizing light scattering measurements at a fixed angle from incident light delivery, for pathogen detection are explored in both Rayleigh and Mie scatter regimes through scatter intensity simulations and compared to experimental results. In the fourth paper a quartz crystal microbalance was used for real-time monitoring of fibrinogen cross-linking on three model biomaterial surfaces.
    Type
    text
    Electronic Dissertation
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Agricultural & Biosystems Engineering
    Graduate College
    Degree Grantor
    University of Arizona
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