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Displaying 2201 - 2225 of 2320

Microwave Surface Impedance and Nonlinear Properties of MgB 2 Films

June 1, 2003
Author(s)
James Booth, Sang Y. Lee, Kenneth Leong, J. H. Lee, J. Lim, H. N. Lee, S. H. Moon, B. Oh
We have measured the temperature dependence of the microwave surface impedance and the nonlinear response of high-quality MgB 2 films on c-cut sapphire at temperatures below 40 K. MgB 2 films with surface resistance (Rs) as low as 0.09 mOhm} at 8 K and 19

Chemistry of Silanes Interfaces in Dental Polymers and Composites

January 1, 2003
Author(s)
Joseph M. Antonucci, Sabine H. Dickens, Bruce O. Fowler, H H. Xu, Walter G. McDonough
The performance and service life of glass- or ceramic-filled polymeric composites depend on the nature of their resin, filler and interfacial phases as well as the efficacy of the polymerization process. The synergy that exists between the organic polymer

Glass-Fiber/Resin Interfacial Strength the Microbond Test and Chemical Evaluation

January 1, 2003
Author(s)
Walter G. McDonough, Joseph M. Antonucci, Joy Dunkers, Gary E. Schumacher
The quest for durable, aesthetic and bondable materials that can restore both the function and appearance of lost tooth structure has been a major concern for dental materials researchers. A significant advance, which ushered in the modern era of

Subsolidus Phase Equilibria and Crystal Chemistry in the System BaO-TiO 2 -Ta 2 O 5

January 1, 2003
Author(s)
Terrell A. Vanderah, Robert S. Roth, T Siegrist, W Febo, J. M. Loezos, Winnie K. Wong-Ng
Subsolidus phase relations have been determined for the BaO: TiO 2Ta 2O 5 system. Approximately 100 specimens were prepared in air at temperatures near but below the solidus (1275 C to 1500 C). For the binary BaO: Ta 2O 5 subsystem, the formation of all

Application of the V-Notch Shear Testing for Unidirectional Hybrid Composities

December 1, 2002
Author(s)
J He, Martin Y. Chiang, Donald L. Hunston, Charles C. Han
The v-notch (losipescu) shear test was investigated as a mean for determining the in-plane shear modulus and strength of unidirectional hybrid composites. Two types of hybrid systems having different fiber tow volume fractions composed of carbon and glass

Talking Ceramics

November 1, 2002
Author(s)
Terrell A. Vanderah
This is an invited Perspective article describing the technical needs and state-of-the-art research activities in the materials science of microwave ceramics, especially dielectric materials which serve as critical elements in resonators and filters
Displaying 2201 - 2225 of 2320
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