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Displaying 53576 - 53600 of 73697

Scattering From Sinusoidal Gratings

September 1, 1997
Author(s)
B C. Park, Theodore V. Vorburger, Thomas Germer, Egon Marx
Laser light scattering from holographic sinusoidal gratings has been investigated with a view to its use in the calibration of the linearity of BRDF instruments, a task that requires a wide dynamic range in the scattered intensity. An aluminum-coated

Self-Assembled Monolayers Exposed by Metastable Argon and Metastable Helium for Neutral Atom Lithography and Atomic Beam Imaging

September 1, 1997
Author(s)
A Bard, K K. Berggren, J L. Wilbur, John D. Gillaspy, S L. Rolston, Jabez J. McClelland, William D. Phillips, M Prentiss, G M. Whitesides
We used a beam of noble gas atoms in a metastable excited state to expose a thin (1.5nm self-assembled monolayer resist applied over a gold-coated silicon wafer. We determined exposure damage as a function of dose of metastable atoms by processing the

The Application Protocol Information Base World Wide Web Gateway

September 1, 1997
Author(s)
Joshua Lubell
The Application Protocol Information Base (APIB) is an on-line repository of documents for the Standard for the Exchange of Product model data (STEP, officially ISO 10303 - Product Data Representation and Exchange). Document types in the APIB include STEP

The creation and study of Bose-Einstein condensation in a cold alkali vapor

September 1, 1997
Author(s)
C E. Wieman, Eric A. Cornell, Deborah S. Jin, J R. Ensher
Bose-Einstein condensation in a gas resulted form the combination of research in laser cooling and trapping, the study of spin polarized hydrogen, and the investigation of atomic collisions at very low temperatures. After discussing how these advances led

Uncertainty Estimation for Multiposition Form Error Metrology

September 1, 1997
Author(s)
William T. Estler, Christopher J. Evans, Lianzhen Shao
We analyze a general multiposition comparator measurement procedure that leads to partial removal of artifact error for a class of problems including roundness metrology, measurement of radial error motions of precision spindles, and figure error metrology

Using Voluntary Standards in the Federal Government

September 1, 1997
Author(s)
J E. Tyler
Using Voluntary Standards in the Federal Government is a compilation of presentations given at a NIST-sponsored conference held on September 8, 1997. The purpose of the conference was to foster better understanding among Federal agencies of the private

Ternary Zeotropic Mixture With CO2 Component for R-22 Heat Pump Application

August 30, 1997
Author(s)
K Maczeck, J Muller, K Wojtas, Piotr A. Domanski
The objective of this research project was to demonstrate a successful operation of a high efficiency heat pump employing a zeotropic mixture with a zero ozone-depletion and a small greenhouse warming potential (ODP and GWP, respectively). The project

Civil Infrastructure Systems Research: Government Perspective.

August 28, 1997
Author(s)
Richard N. Wright
The U.S. federal agencies' strategy for research, development and deployment in support of the industries of construction has been developed with these industries by the Subcommittee on Construction and Building of the National Science and Technology

Characterization of Coplanar Waveguide on Epitaxial Layers

August 14, 1997
Author(s)
Dylan F. Williams, J. M. Belquin, Alain Spisser, Alain Cappy, G. Dambrine
We examine the effect of thin AlInAs/GaInAs epitaxial layers on the propagation of electrical signals in coplanar waveguide transmission lines fabricated on semi-insulating indium phosphide substrates. We show that argon isolation implants effectively

Advanced Fire Detection

August 10, 1997
Author(s)
E Braun
Current test protocols and certification processes have been developed to accommodate specific detection sensor technologies. Test methods exist to evaluate specific classes of sensors, e.g., ionization, optical, temperature, or CO, etc. In the past, the
Displaying 53576 - 53600 of 73697
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