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Displaying 44551 - 44575 of 73461

Structure and Electronic Transport Properties of Si-(B)-C-N Ceramics

October 1, 2001
Author(s)
A M. Hermann, Y T. Wang, P A. Ramakrishnan, Davor Balzar, L A. An, C Haluschka, R Riedel
The structure and electronic transport properties of polymer-derived pristine-and boron-doped silicon-carbonitride ceramics have been studied, with particular emphasis on understanding the effect of annealing treatments. Structural analysis using the

Techniques to Improve Bluetooth Performance in Interference Environments

October 1, 2001
Author(s)
Nada T. Golmie, Nicolas Chevrollier
Bluetooth is a radio technology for Wireless Personal Area Networks operating in the 2.4 GHz ISM band. Since both Bluetooth and IEEE 802.11 devices use the same frequency band and may likely come together in a laptop or may be close together at a desktop

Temperature Measurement and Control in Microfluidic Systems

October 1, 2001
Author(s)
David J. Ross, Michael Gaitan, Laurie E. Locascio
We describe a technique for the measurement of fluid temperatures in microfluidic systems based on temperature-dependent fluorescence. The technique is easy to implement with a standard fluorescence microscope and CCD camera. The efficiency of the method

Test-Chamber Imaging Using Spherical Near-Field Scanning

October 1, 2001
Author(s)
Ronald C. Wittmann, Michael H. Francis
Although the theory is straightforward, practical implementation of spherical near-field scanning for evaluating test chambers presents some significant challenges. Among these are the requirement for accurate probe positioning and the difficulty in

The Ninth Text REtrieval Conference (TREC-9)

October 1, 2001
Author(s)
Ellen M. Voorhees, Donna K. Harman
This paper provides an overview of the ninth Text REtrieval Conference (TREC-9) held in Gaithersburg, Maryland, November 13-16, 2000. TREC-9 is the latest in a series of workshops designed to foster research in text retrieval. This year's conference

Time- and Frequency-Domain Analysis of EMC Test Facilities

October 1, 2001
Author(s)
David R. Novotny, Robert T. Johnk, Claude Weil, Seturnino Canales
We have developed a methodology to determine the quality of an EMC test facility using equipment that may be generally available to RF testing services. By utilizing both, the time- and frequency-domains, an accurate picture of the scattering , and modal

Time-Resolved Isothermal Crystallization of Absorbable PGA-co-PLA Copolymer by Synchrotron Small-Angle X-Ray Scattering and Wide-Angle X-Ray Diffraction

October 1, 2001
Author(s)
Z G. Wang, X H. Wang, B S. Hsiao, S Andjelic, D Jamiolkowski, J McDivitt, J Fischer, J Zhou, Charles C. Han
The isothermal crystallization behavior of absorbable dyed and undyed PGA-co-PLA copolymers was investigated by time-resolved simultaneous synchrotron small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) methods. The morphological

Tomography of Integrated Circuit Interconnects

October 1, 2001
Author(s)
Zachary H. Levine, A R. Kalukin, M Kuhn, S P. Frigo, I McNulty, C C. Retsch, Y Wang, Uwe Arp, Thomas B. Lucatorto, Bruce D. Ravel, Charles S. Tarrio
00 Word summary based on the paper:Z. H. Levine, A. R. Kalukin, M. Kuhn, S. P. Frigo, I. McNulty,>C. C. Retsch, Y. Wang, U. Arp, T. B. Lucatorto, B. D. Ravel, and C. Tarrio,>``Microtomography of Integrated Circuit Interconnect with an> Electromigration

Ultracold Collisions of Metastable Helium Atoms

October 1, 2001
Author(s)
P J. Leo, V Venturi, I B. Whittingham, J F. Babb
We report scattering lengths for the 1ς + g, 3ς + u, 5ς + g adiabatic molecular potentials relevant to collisions of two metastable 2 3S helium atoms as a function of the uncertainty in these potentials. These scattering lengths are used to calculate

Using the Virtual Cybernetic Building Testbed and FDD Test Shell for FDD Tool Development

October 1, 2001
Author(s)
Steven T. Bushby, Natascha S. Milesi-Ferretti, Cheol D. Park, Michael A. Galler
vances in building automation technology have taken place for a variety of building services including heating, ventilating, and air conditioning (HVAC) control systems, lighting control systems, access control systems, and fire detection systems. In spite

Using X-Ray Topography to Study Fracture of Single-Crystal Ceramics

October 1, 2001
Author(s)
David R. Black, Robert S. Polvani, George D. Quinn
X-ray topography provides a unique view of the surfaces of single-crystal samples, both before and after fracture. The diffraction topograph, which is sensitive to local strain and/or crystallographic orientation, can be used to inspect samples prior to

Using X-Ray Topography to Study Fracture of Single-Crystal Ceramics

October 1, 2001
Author(s)
Robert S. Polvani, D Black
X-ray topography provides a unique view of the surfaces of single-crystal samples, both before and after fracture. The diffraction topograph, which is sensitive to local strain and/or crystallographic orientation, can be used to inspect samples prior to

Wavelet Transform Approach to the Analysis of Specular X-Ray Reflectivity Curves

October 1, 2001
Author(s)
I R. Prudnikov, R J. Matyi, R Deslattes
A method for analyzing X-ray reflectivity curves from multilayered structures with interfacial roughness using a wavelet transform approach has been developed. By using this approach, we have been able (1) to extract the contribution of a particular rough

X-Ray Reflectivity and FTIR Measurements of N2 Plasma Effects on the Density Profile of Hydrogen Silsesquioxane Thin Films

October 1, 2001
Author(s)
V. J. Lee, C G. Chao, Eric K. Lin, Wen-Li Wu, B M. Fanconi, J K. Lan, Y L. Cheng, H C. Liou, Y L. Wang, M S. Feng
Non-destructive, specular X-ray reflectivity (SXR) measurements were used to investigate N2 plasma effects on the density depth profile of hydrogen silsesquioxane (HSQ) thin films. The SXR data indicate that the density profile of an HSQ film without

The 2000 Material Research Society (MRS) Fall Meeting Report

September 27, 2001
Author(s)
Winnie K. Wong-Ng
Keeping with tradition, the 2000 MRS annual meeting again took place in Boston Copely Plaza from November 27 to December 1. The 2000 meeting was well organized and well attended, with a total of 4600 attendees representing industrial, academic, and
Displaying 44551 - 44575 of 73461
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