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Search Publications

NIST Authors in Bold

Displaying 40926 - 40950 of 73697

Bluetooth Dynamic Scheduling and Interference Mitigation

May 1, 2003
Author(s)
Nada T. Golmie
Bluetooth is a cable replacement technology for Wireless Personal Area Networks. It is designed to support a wide variety of applications such as voice, streamed audio and video, web browsing, printing, and file sharing, each imposing a number of quality

Calculation Tools at SP Fire Technology. (Abstract/Presentation/Visuals)

May 1, 2003
Author(s)
P VanHees, B Sundstrom
The Centre for Combustion Science and Technology, CECOST, was founded in 1996 at the Lund Institute of Technology, in close collaboration with Chalmers University of Technology and the Royal Institute of Technology. The Centre is funded by the Foundation

Calibration Strategies for Overlay and Registration Metrology

May 1, 2003
Author(s)
Richard M. Silver, Michael T. Stocker, Ravikiran Attota, M R. Bishop, Jay S. Jun, Egon Marx, M P. Davidson, Robert D. Larrabee
Critical dimensions in current and next generation devices are driving the need for tighter overlay registration tolerances and improved overlay metrology tool accuracy and repeatability. Tool matching, performance evaluation, model-based metrology, and a

Causal Characteristic Impedance of Planar Transmission Lines

May 1, 2003
Author(s)
Dylan F. Williams, Bradley K. Alpert, Uwe Arz, Hartmut Grabinski
Abstract: We compute power-voltage, power-current, and causal definitions of the characteristic impedance of microstrip and coplanar-waveguide transmission lines on insulating and conducting silicon substrates, and compare to measurement.

Characterization of Surface Organic Components of Human Hair by On-Line Supercritical Fluid Extraction - Gas Chromatography/Mass Spectrometry: A Feasibility Study and Comparison with Human Identification Using Mitochondrial DNA Sequences

May 1, 2003
Author(s)
Bruce A. Benner Jr, J V. Goodpaster, J A. DeGrasse, L A. Tully, Barbara C. Levin
Hair is routinely collected at crime scenes for subsequent forensic analysis, typically involving inspection by microscope techniques to determine any distinguishing characteristics that might help associate the sample with an individual. Recent advances

Co Layer Thickness Dependence of Exchange Biasing For IrMn/Co and FeMn/Co

May 1, 2003
Author(s)
K A. Seu, H Huang, J F. Lesoine, H D. Showman, William F. Egelhoff Jr., L Gan, A C. Reilly
We present a high resolution study of the ferromagnetic layer thickness dependence of exchange bias field (H EB) and coercivity (H C) in IrMn/Co and FeMn/Co bilayers using the magneto-optical Kerr effect. Samples are sputtered wedges on silicon with Co

Combining Data in Small Multiple Method Studies

May 1, 2003
Author(s)
Robert C. Hagwood, William F. Guthrie
In this article an accurate confidence interval is derived when the results of a small number of different experimental methods are combined for the determination of an unknown quantity. ANOVA and a simple hierarchical Bayesian analysis of variance result

Comparison of ISO/IEC 17025 with the NUPIC Audit Checklist

May 1, 2003
Author(s)
C D. Faison
Representatives of the Nuclear Utilities Industry and the laboratory accreditation community met to discuss Nuclear Regulatory Commission (NRC) recognition of the use of accredited commercial calibration laboratories as suppliers of commercial grade

Comprehensive Microstructural Characterization and Predictive Property Modeling of Plasma-Sprayed Zirconia Coatings

May 1, 2003
Author(s)
A Kulkarni, Z G. Wang, T Nakamura, S Sampath, A N. Goland, H Herman, Andrew J. Allen, J Ilavsky, Gabrielle G. Long, J Frahm, R W. Steinbrech
Quantitative microstructure characterization to better understand processing-microstructure-property correlations is of considerable interest in plasma sprayed coating research. This paper quantifies, by means of small-angle neutron scattering (SANS) data

Comprehensive Microstructural Characterization and Predictive Property Modelling of Plasma-Sprayed Zirconia Coatings

May 1, 2003
Author(s)
A Kulkarni, Z G. Wang, T Nakamura, S Sampath, A N. Goland, Gabrielle G. Long, H Herman, J. Allen, J Ilavsky, G J. Long, J Frahm, R W. Steinbrech
hieving control of the microstructure of plasma-sprayed thermal-barrier coating (TBC) systems offers an opportunity to tailor coating properties to demanding applications. Accomplishing this requires a fundamental understanding of the correlations between

Cooling and Trapping of Atomic Strontium

May 1, 2003
Author(s)
X Xu, T Loftus, John L. Hall, Alan Gallagher, Jun Ye
We present a detailed investigation of the magneto-optical trap dynamics of alkarne-earth 88Sr atoms. The experimental results establish a firm confirmation of the laser cooling dynamics predicted by Doppler theory in thecontext of a strictly two-level

Correlated Photon Radiometry

May 1, 2003
Author(s)
Alan L. Migdall
Each of these techniques uses the process of optical parametric down-conversion (PDC) to produce correlated pairs of photons. This process employs a nonlinear medium which allows photons from a pump beam to, in effect, decay into pairs of photons under the

Current-Induced Spin-Wave Excitations in a Single Ferromagnetic Layer

May 1, 2003
Author(s)
Yi Ji, C L. Chien, Mark D. Stiles
Evidence for a current induced spin-transfer torque effect has been investigated in a series of point contacts to single ferromagnetic layers. At specific current densities, abrupt resistance changes, similar to those attributed to current-induced spin

Database-Assisted Design and Structural Reliability for Building Codes

May 1, 2003
Author(s)
S M. Diniz, Emil Simiu
We present a database-assisted design (DAD)-compatible probabilistic procedure for estimating (a)wind effects for any return period and (b) wind load factors. Unlike earlier reliability estimates, we account for the randomness of peak effects and for

Dependence of Electron Density on Fermi Energy in N-type Gallium Antimonide

May 1, 2003
Author(s)
Herbert S. Bennett, Howard Hung
The majority electron density as a function of the Fermi energy is calculated in zinc Blende, n-type GaSb for donor densities between 10 16 cm -3 and 10 19 cm -3. These calculations solve the charge neutrality equation self-consistently for a four-band

Dependence of Morphology on Miscut Angle for Si(111) Etched in NH(4)F

May 1, 2003
Author(s)
S Gonda, Joseph Fu, John A. Kramar, Richard M. Silver, Hui Zhou
Using scanning probe microscopy, we have examined the surfaces produced by etching several different vicinal Si(111) samples in NH(4)F aqueous solution. In agreement with others, we found that deoxygenation of the etchant generally reduces the number of

Dependency of Morphology on Miscut Angle for Si(111) Etched in NH 4 F

May 1, 2003
Author(s)
Joseph Fu, Hui Zhou, John A. Kramar, Richard M. Silver, S Gonda
Using scanning probe microscopy, we have examined the surfaces produced by etching several different vicinal Si(111) samples in NH 4F aqueous solution. In agreement with others, we found that deoxygenation of the etchant generally reduces the number of

Developments toward an Autonomous Robotic Crane for Automated Steel Construction

May 1, 2003
Author(s)
Kamel S. Saidi, Alan M. Lytle, Nicholas A. Scott
The NIST Construction Metrology and Automation Group, in cooperation with the NIST Intelligent Systems Division, is researching robotic structural steel placement as part of a project to develop an Automated Steel Construction Testbed. This project was

EBIT Diagnostics Using X-ray Spectra of Highly Ionized Ne

May 1, 2003
Author(s)
M Matranga, M Barbera, A Maggio, G Peres, S Serio, E Takacs, E Silver, John D. Gillaspy, H. Schnopper, J M. Laming, J. Beeman, E. E. Haller, N. Madden
We have carried out a detailed analysis of highly ionized neon spectra collected at the NIST EBIT using an NTD germanium X-ray microcalorimeter developed at the Harvard-Smithsonian Center for Astrophysics [1]. Our attention was focused especially on the Ne
Displaying 40926 - 40950 of 73697
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