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Displaying 47251 - 47275 of 74441

Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties

January 1, 2001
Author(s)
G Schmidt, A Nakatani, Paul Butler, V Ferreiro, Alamgir Karim, Charles C. Han
The influence of shear on viscoelastic polymer-clay solutions was investigated by means of small-angle neutron scattering (SANS) under shear. SANS measured the shear-induced orientation of polymer and platelets. With increasing shear rate an anisotropic

Precision Ultrasonic Wave Measurements with Simple Equipment

January 1, 2001
Author(s)
Steven E. Fick, C H. Palmer
We describe the design and construction of a relatively simple, inexpensive laser interferometer system for accurate measurements of ultrasonic waveforms in reasonably friendly environments. We show how analysis of a single waveform can provide both the

Preparation and Characterization of Photopatternable BaTiO 3 / Polymer Composites

January 1, 2001
Author(s)
R Popielarz, C. K. Chiang, R Nozaki, Jan Obrzut
The dielectric properties of acrylic resin composites filled with BaTiO 3 have been evaluated in the broad frequency range. These materials were used as models to study the dielectric response in polymer composite films for de-coupling capacitance

Primary Atomic Frequency Standards at NIST

January 1, 2001
Author(s)
Donald Sullivan, James C. Bergquist, Robert E. Drullinger, Wayne M. Itano, Steven R. Jefferts, D W. Lee, D Meekhof, Thomas E. Parker, F L. Walls, David J. Wineland
Displaying 47251 - 47275 of 74441
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