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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...
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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...
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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...
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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...
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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...
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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...
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Article
Ferroelectric Thin Films in Microelectromechanical Systems Applications
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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,...
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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 ...
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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...