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  • Plasma-induced modification of films containing polytetrafluoroethylene (PTFE)

    Creator:
    Jones, Hyrum E.
    Abstract:
    Polymer samples of polytetrafluoroethylene (PTFE) and a PTFE-glass weave (RF- 35P) are exposed to low pressure, non-equilibrium glow discharge plasmas for enhanced wettability as measured by static contact angles. Plasma treatments are performed in two parallel plate RF plasma systems, a downstream microwave plasma and a barrel etcher using feed...
    Resource Type:
    Masters Thesis
    Full Text:
    feed gases composed of H2, N2, Ar, He, and 02. Surface analysis of the topography and chemical

  • Use of the equilibrium contact angle as an index of contact surface cleanliness

    Creator:
    Yang, Jianguo
    Abstract:
    Advancing contact angles formed by water and aqueous ethanol solutions were measured on both bare surfaces and film-covered surfaces of acrylic, glass, hydrophilic and hydrophobic silicon, polycarbonate, polyester, and stainless steel. Each bare surface was initially characterized with respect to its hydrophilic - hydrophobic balance. Both protein films and milk...
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Food Science and Technology presented on December 18. 1990 Title: Use of the

  • Reactively sputtered films of silicon nitride for diffusion masking

    Creator:
    Delzer, Dennis Richard
    Abstract:
    The experimental procedure for reactively sputtering films of silicon nitride together with the methods for measuring the film thickness have been investigated. Some of the properties of these nitride films were studied. These properties included: infrared spectrum, etching properties, and index of refraction. The adherence of the films was also...
    Resource Type:
    Masters Thesis
    Full Text:
    circuit technology. Films that act as diffusion masks are ones through which impurities diffuse very

  • The influence of surface functional groups on β-lactoglobulin adsorption equilibrium

    Creator:
    Al-Makhlafi, Hamood K.
    Abstract:
    Interactions between proteins and contact surfaces can have important implications in the food industry. Such interactions contribute to the course of fouling of membrane surfaces and they appear to mediate bacterial and spore adhesion to some degree as well. In addition to protein and solution properties, interfacial behavior is strongly...
    Resource Type:
    Masters Thesis
    Full Text:
    degree of Master of Science in Food Science and Technology Presented on August 11. 1992 Title: The

  • Thermal contact resistances in a thermal conductivity test system

    Creator:
    Schneider, Donald A.
    Abstract:
    The thermal contact conductance (TCC) between two machined pieces of stainless steel was studied. A guarded hot plate thermal conductivity test fixture was designed and built for the experiment. Factors investigated included the contact pressure, surface roughness, interface material and average test temperature. The contact pressure at the interface ranged...
    Resource Type:
    Masters Thesis
    Full Text:
    pressure, surface roughness, interface material and average test temperature. The contact pressure at the

  • Microlamination based on surface mount technology for the economical production of microchannel arrays

    Creator:
    Sharma, Nitin
    Abstract:
    Micro Energy and Chemical Systems (MIECS) are multi-scale microsystems, which rely on embedded nano and micro-scale features to process bulk amounts of fluid in applications ranging from man-portable heat pumps, distributed fuel reforming and insitu waste remediation. Microlamination is a well-known process architecture for fabricating the highly parallel, high aspect...
    Resource Type:
    Masters Thesis

  • Experimental Study of Nucleate Boiling Bubble Dynamics and Heat Transfer Enhancement on Printed Bi-functional Surfaces

    Creator:
    David, Michele
    Abstract:
    Boiling heat transfer is studied for its ability to dissipate high fluxes and achieve heat transfer coefficients two orders of magnitude greater than single-phase heat transfer systems. Heater surface enhancement with increased surface area, varied geometry, wettability contrast and micro/nano-structures can further enhance boiling heat transfer performance through bubble nucleation...
    Resource Type:
    Masters Thesis
    Full Text:
    transfer systems. Heater surface enhancement with increased surface area, varied geometry, wettability

  • A Manufacturing Process Design for Producing a Membrane-based Energy Recovery Ventilator with High Aspect Ratio Support Ribs

    Creator:
    Kawula, Steven P.
    Abstract:
    Heating, ventilation, and air conditioning systems represent nearly half of building energy usage in the United States. Recent building regulations requiring increased air turnover within buildings will result in even greater air conditioning usage. To alleviate these concerns, membrane-based heat-and-moisture exchangers known as energy recovery ventilators have been developed to...
    Resource Type:
    Masters Thesis
    Full Text:
    costs of channel lamination, surface mount technology (SMT) has been explored to shorten cycle times

  • Mechanical characterization and modeling of solder joints for the secondary side reflow of large IC packages

    Creator:
    Yutzie, James D.
    Abstract:
    As the drive continues to reduce the size of Printed Wiring Assemblies (PWAs), improve performance of electronic assemblies, and reduce costs of these products, reliable secondary (bottom) side reflow operations must be developed. Attaching Surface Mount Technology (SMT) components to the secondary side of a Printed Circuit Board (PCB) is...
    Resource Type:
    Masters Thesis
    Full Text:
    products, reliable secondary (bottom) side reflow operations must be developed. Attaching Surface Mount

  • Synthesis, surface treatment, and characterization of copper indium sulfide quantum dots

    Creator:
    Alemu, Yagenetfere A.
    Abstract:
    The need for less toxic quantum dots (QDs) has led to a significant number of investigations related to copper indium sulfide (CIS) QDs. Lower toxicity and broad band absorbance width makes CIS QDs appealing for light emitting diodes (LEDs), lasers, sensors, bio-imaging, solar cells, and computing. The optical and electronic...
    Resource Type:
    Masters Thesis
    Full Text:
    on December 13, 2016. Title: Synthesis, Surface Treatment, and Characterization of Copper Indium