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17 Result(s)

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  1. No Access

    Article

    Process limits in two-layer reverse roll transfer

    Reverse roll coating in which a thin single layer of liquid is applied onto a substrate has been used in industry for decades and has been extensively analyzed in the literature. Modern coatings, however, are ...

    M. Sasaki, W. J. Suszynski, M. S. Carvalho… in Journal of Coatings Technology and Research (2013)

  2. No Access

    Article

    Drying and collapse of hollow latex

    Hollow latex particles are used as white pigments for paints and paper coatings. In the coating dispersion, each hollow particle is filled with water. As the coating dries, water vacates the latex, leaving an ...

    C. M. Cardinal, L. F. Francis, L. E. Scriven in Journal of Coatings Technology and Research (2009)

  3. No Access

    Article

    Development and measurement of stress in polymer coatings

    This paper reviews stress development mechanisms and stress measurement techniques for polymer coatings. Most polymeric coatings shrink during and after solidification due to chemical reaction, solvent evapora...

    L. F. Francis, A. V. Mccormick, D. M. Vaessen, J. A. Payne in Journal of Materials Science (2002)

  4. No Access

    Article

    Lowering The Percolation Threshold In Carbon Blackfilled Polymer Composites

    In an effort to lower the percolation threshold of carbon black-filled polymer composites, various polymer microstructures were examined. Composites prepared with a polyvinyl acetate (PVAc) latex and a poly(vi...

    J. C. Grujnlan, W. W. Gerberich, L. F. Francis in MRS Online Proceedings Library (1999)

  5. No Access

    Article

    Effect of Curing Strategies on Porosity in Silanemodified Silica Colloidal Coatings

    Suspensions of silica (20 nim) in propoxyethanol were used to make porous silica coatings. A silane coupling agent, glycidoxypropyltrimethoxysilane (GPS), was added as a binder to increase coating durability a...

    M. W. Daniels, L. F. Francis in MRS Online Proceedings Library (1999)

  6. No Access

    Article

    Microstructure and crystal structure development in porous titania coatings prepared from anhydrous titanium ethoxide solutions

    Porous titania coatings were prepared by spin coating anhydrous titanium ethoxide–ethanol solutions in a controlled humidity atmosphere. Ti ethoxide reacted with atmospheric moisture during deposition, to form...

    Y. J. Kim, L. F. Francis in Journal of Materials Science (1998)

  7. No Access

    Article

    Use of an Organosilane Coupling Agent in Colloidal Silica Coatings

    Coatings were prepared from suspensions containing colloidal silica (20nm) in isopropanol and 3-glycidoxypropyltrimethoxysilane (GPS). Thicker coatings without cracks were achieved by increased addition of GPS...

    M. W. Daniels, L. Chu, L. F. Francis in MRS Online Proceedings Library (1996)

  8. No Access

    Article

    Glycidoxypropyltrimethoxysilane Modified Colloidal Silica Coatings

    Coatings were prepared from a suspension of colloidal silica particles containing glycidoxypropyltrimethoxysilane (GPS) and a polyamine curing agent. GPS was first added to an aqueous silica suspension which c...

    L. Chu, M. W. Daniels, L. F. Francis in MRS Online Proceedings Library (1996)

  9. No Access

    Article

    Mechanical Behavior of a Mems Acoustic Emission Sensor

    The elastic modulus and hardness of materials used in a MEMS acoustic emission sensor were determined using nanoindentation techniques. In addition to testing each individual material, the behavior of four can...

    D. F. Bahr, J. S. Wright, L. F. Francis, N. R. Moody… in MRS Online Proceedings Library (1996)

  10. No Access

    Article

    Processing and Piezoelectric Properties of MOD PZT Films and PZT/Polymer Composite Coatings

    Lead zirconate titanate, Pb(Zr0.53Ti0.47)O3 (PZT), coatings were prepared using a metallorganic decomposition (MOD) route with lead and titanium acetates and zirconium acetylacetonate in acetic acid and water. Fi...

    J. S. Wright, L. F. Francis in MRS Online Proceedings Library (1996)

  11. No Access

    Article

    Ferroelectric Thin Films in Microelectromechanical Systems Applications

    D. L. Polla, L. F. Francis in MRS Bulletin (1996)

  12. No Access

    Article

    Processing of calcium metaphosphate-based glass-ceramic coatings on alumina

    Dense, crystalline, glass-ceramic coatings containing calcium metaphosphate and aluminum phosphate were prepared on aluminum oxide substrates by a three-step method. The processing involved glass (40 mol% CaO,...

    K. J. Vaidya, L. F. Francis in Journal of Materials Research (1996)

  13. No Access

    Article

    Sol-gel processing of lithium disilicate

    Lithium disilicate (Li2Si2O5) coatings were prepared by spin-coating alkoxide solutions on to substrates [Si, SiO2, polycrystalline (poly) Si, sapphire] and heating isothermally at 500–600 °C. The effects of solu...

    P. Li, L. F. Francis in Journal of Materials Science (1995)

  14. No Access

    Article

    Sol-gel processing of lithium disilicate

    Lithium silicate powders were prepared by several sol-gel routes. Starting solutions contained equimolar amounts of lithium and silicon, but single-phase lithium disilicate (Li2Si2O5) formed only when local stoic...

    P. Li, B. A. Ferguson, L. F. Francis in Journal of Materials Science (1995)

  15. No Access

    Article

    An Experimental Examination of Mems Microactuator Material Issues

    Thermally induced interactions between materials in complex microactuator structures were investigated. The device structure contained a combination of a piezoelectric layer (lead zirconate titanate - PZT) an ...

    T. G. Cooney, D. E. Glumac, W. P. Robbins, L. F. Francis in MRS Online Proceedings Library (1994)

  16. No Access

    Article

    A Theoretical Examination of Mems Microactuator Responses with an Emphasis on Materials and Fabrication

    A free standing cantilever beam consisting of a support structural material (polysilicon/silicon nitride), a piezoelectric PZT ceramic layer, and metal electrode layers has been analyzed. Beam theory and finit...

    D.E. Glumac, T.G. Cooney, L.F. Francis, W.P. Robbins in MRS Online Proceedings Library (1994)

  17. No Access

    Article

    Sol-gel processing and properties of lead magnesium niobate powders and thin layers

    Lead magnesium niobate powders and thin layers were formed from an alkoxide-based solution by sol-gel methods. The solution was synthesized by reacting a magnesium-niobium alkoxide solution with a lead acetate...

    L. F. Francis, Y -J. Oh, D. A. Payne in Journal of Materials Science (1990)