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NIST Authors in Bold

Displaying 41251 - 41275 of 73970

New Method to Enhance Overlay Tool Performance

May 1, 2003
Author(s)
Ravikiran Attota, Richard M. Silver, Michael T. Stocker, Egon Marx, Jay S. Jun, M P. Davidson, Robert D. Larrabee
New methods to enhance and improve algorithm performance and data analysis are being developed at NIST for overlay measurement applications. Both experimental data and improved theoretical optical scattering models have been used for the study. We have

NIST Digital Library of Mathematical Functions

May 1, 2003
Author(s)
Daniel W. Lozier
NIST (formerly, National Bureau of Standards) has started an ambitious project that aims to produce a successor to Abramowitz and Stegun's {\em Handbook of Mathematical Functions}, published by the National Bureau of Standards in 1964 and reprinted by

Numerical Analysis of a Coaxial Line With a Complex Gap Capacitance

May 1, 2003
Author(s)
Jan Obrzut, O Anopchenko
A full wave numerical analysis was performed for a coaxial line terminated by a complex gap capacitance. The scattering parameters, input impedance and the spatial distribution of the electromagnetic field have been obtained in the frequency range of 100

On Shortest Random Walks under Adversarial Uncertainty

May 1, 2003
Author(s)
Vladimir V. Marbukh
Finding shortest feasible paths in a weighted graph has numerous applications including admission and routing in communication networks. This paper discusses a game theoretic framework intended to incorporate a concept of path stability into the process of

Orientation of Carbon Nanotubes in a Sheared Polymer Melt

May 1, 2003
Author(s)
Erik K. Hobbie, Haonan Wang, H W. Kim, Sheng Lin-Gibson, E A. Grulke
Optical measurements of the shear response of dilute ensembles of multi-walled carbon nanotubes dispersed in a polybutadiene melt are presented. At low shear stress, the measurements suggest that the tubes are broadly oriented along the direction of flow

Overlay Metrology Simulations: Analytical and Experimental Validations

May 1, 2003
Author(s)
Joel L. Seligson, B Golovanevsky, J M. Poplawski, M E. Adel, Richard M. Silver
We have previously reported on an overlay metrology simulation platform, used for modeling both the effects of overlay metrology tool behavior and the impact of target design on the ultimate metrology performance. Since our last report, the simulations by

Patterned Loading of a Bose-Einstein Condensate Into an Optical Lattice

May 1, 2003
Author(s)
S P. Peil, James V. Porto, B L. Tolra, J Obrecht, B E. King, M Subbotin, S L. Rolston, William D. Phillips
We have developed a technique to control the placement of atoms in an optical lattice by using a superlattice comprising two separately manipulated, periodic optical potentials with commensurate periods. We demonstrate selective loading of Bose-condensed

Phase Field Modelling of Alloy Polycrystals

May 1, 2003
Author(s)
James A. Warren, I Loginova, L Granasy, T Borzsonyi, T Pusztai
Recent results using a phase field model of polycrystalline alloy dynamics are presented, using two numerical techiques: adaptive grids and parallel grids. The growth of alloy dendrites, and their subsequent impingement to form grain boundaries is

PIV Measurements in a Droplet-Laden Homogeneous Turbulent Flow Over a Cylinder

May 1, 2003
Author(s)
Cary Presser, G Papadopoulos, J F. Widmann
The dispersal of high boiling point liquid fire suppression agents around solid obstacles is investigated to obtain a better understanding of the physical processes of droplet transport in cluttered spaces. To this end, the present experimental

Quantum Computer Architecture Using Nonlocal Interactions

May 1, 2003
Author(s)
G K. Brennen, D Song, Carl J. Williams
Several authors have described the basic requirements essential to building a scalable quantum computer. Because many physical implementation schemes for quantum computing rely on nearest neighbor interactions, there is a hidden quantum communication

Quantum-Computer Architecture Using Nonlocal Interactions

May 1, 2003
Author(s)
G K. Brennen, D Song, Carl J. Williams
Many protocols for quantum information processing use a control sequence or circuit of interactions between qubits and control fields wherein arbitrary qubits can be made to interact with one another. The primary problem with many ''physically scalable

Radiometric Measurement Comparison on the Integrating Sphere Source Used to Calibrate the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 Enhanced Thematic Mapper Plus (ETM+)

May 1, 2003
Author(s)
James J. Butler, Steven W. Brown, Robert D. Saunders, B. Carol Johnson, S F. Biggar, E F. Zalewski, B L. Markham, P N. Gracey, J B. Young, R Barnes
As part of a continuing effort to validate the radiometric scales assigned to integrating spheresources used in the calibration of Earth Observing System (EOS) instruments, a radiometric measurement comparison was held in May 1998 at Raytheon/Santa Barbara

Reference Material 8457, Ultra High Molecular Weight Polyethylene 0.5 cm Cubes

May 1, 2003
Author(s)
B M. Fanconi, J A. Tesk, William F. Guthrie
The geometric and surface features of a new NIST reference material, RM 8457 are presented. This reference material is composed of Ultra High Molecular Weight Polyethylene (UHMWPE) in the form of 5 mm cubes. These cubes are intended for use in swelling
Displaying 41251 - 41275 of 73970
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