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Displaying 42926 - 42950 of 73896

Polarized Light Scattering by Dielectric and Metallic Spheres on Silicon Wafers

September 1, 2002
Author(s)
Jae H. Kim, S H. Ehrman, George W. Mulholland, Thomas Germer
The Polarization and intensity of light scattered by monodisperse polystyrene latex and copper spheres, with diameters ranging from 92 to 218 nm, deposited on silicon substrates were measured with 442-, 532-, and 633-nm light. The results are compared with

Polarized Ultraviolet Raman Spectroscopy of B-Si 3 N 4

September 1, 2002
Author(s)
R Vogelgesang, M Grimsditch, Jay S. Wallace
We have studied single crystals of Β-Si 3N 4 with polarization-resolved Raman spectroscopy in order to unambiguously obtain the symmetry character of zone center optical phonon modes. By applying ultraviolet excitation radiation, approaching resonance

Prediction of Cement Physical Properties by Virtual Testing

September 1, 2002
Author(s)
Dale P. Bentz, C Haecker, X Feng, Paul E. Stutzman
Assuring the quality of the massive quantities of cement produced worldwide each year is a daunting task. Currently, the cement industry performs extensive physical testing to assess the quality of their product, resulting in large costs for both materials

Preisach-Arrhenius Model for Thermal Aftereffect

September 1, 2002
Author(s)
Edward Della Torre, Lawrence H. Bennett, R A. Fry, O A. Ducal
tereffect, that is, decay of magnetization with time at a fixed holding field, is often linear in log-time for a limited time window. The slope at the holding field that maximizes the decay rate, normally near the field that maximizes the irreversible

Proceedings of the Biometric Consortium Conference|| September 23-25, 2002

September 1, 2002
Author(s)
Fernando L. Podio, J S. Dunn
¿¿¿The Biometric Consortium Conference examines rapid advances in biometric technologies and applications and explores new developments in the areas of metrology, assurance, and standards. The Conference proceedings include presentations in a series of

Prototype Implementation of an Automated Structural Steel Tracking System

September 1, 2002
Author(s)
K M. Furlani, D T. Latimer, David E. Gilsinn, Alan M. Lytle
This paper discusses the prototype implementation of a system developed by researchers at the National Institute of Standards and Technology (NIST) for the transfer of real-time on-site metrology and metrology-based data for tracking steel frame

Reconstructing Images of Bar Codes for Construction Site Object Recognition

September 1, 2002
Author(s)
David E. Gilsinn, Geraldine S. Cheok, Dianne M. O'Leary
This paper discusses a general approach to reconstructing ground truth intensity images of bar codes that have been distorted by LADARoptics. The first part of this paper describes the experimental data collection of several bar code images along with

Report of the NIST Workshop on Automated Steel Construction

September 1, 2002
Author(s)
Alan M. Lytle, Kamel S. Saidi, William C. Stone, John L. Gross
The Building and Fire Research Laboratory of the National Institute of Standards and Technology, in cooperation with the American Institute of Steel Construction, sponsored a workshop on automated steel construction. The purpose of the workshop was to

Review of Traceable Temperatures and Temperature Measurement

September 1, 2002
Author(s)
Dean C. Ripple
Traceable Temperatures outlines the most common methods of measuring temperature and teaches the reader practical skills in assuring that those measurements are made with confidence at a known level of uncertainty. For a beginning user of thermometers or

Security Guide for Interconnecting Information Technology Systems

September 1, 2002
Author(s)
Timothy Grance, Joan Hash, Steven Peck, Jonathan Smith, Karen Korow-Diks
The Security Guide for Interconnecting Information Technology Systems provides guidance for planning, establishing, maintaining, & terminating interconnections between information technology (IT) systems that are owned & operated by different organizations

Self-Organization of Supramolecular Helical Dendrimers Into Complex Electronic Materials

September 1, 2002
Author(s)
Virgil Percec, A Rapp, Hans -. Spiess, Steven Hudson, H Duan, M Glodde, T K. Bera, Y Miura, I Shiyanovskaya, K D. Singer, V S. Balagurusamy, Paul A. Heiney, I Schnell
The discovery of electrical conduction in organic crystals and polymers has widened the range of potential optoelectronics materials, provided these exhibit sufficiently high charge carrier mobilities and are easy to make and process. Organic single

Spin-Current Induced Magnetotransport in Co/Cu/Co Nanostructures

September 1, 2002
Author(s)
Fred B. Mancoff, Stephen E. Russek
We report measurements on sub-100 nm current-perpendicular-to-place Co/Cu/Co spin-valves. The giant magnetoresistance versus applied magnetic field shows the switching in individual patterned Co nanomagnets. Spin transfer from the spin-polarized current to

Technical Digest Symposium on Optical Fiber Measurements, 2002

September 1, 2002
Author(s)
Paul A. Williams, Gordon W. Day
This digest contains the papers presented at the 2002 Symposium on Optical Fiber Measurements, a 2-1/2 day forum devoted to measurements of fibers, integrated optics, components and systems. Topics covered include measurement of polarization-mode

Templating of Inorganic Nanoparticles by PAMAM/PEG Dendrimer-Star Polymers

September 1, 2002
Author(s)
R C. Hedden, Barry J. Bauer, A P. Smith, Franziska Grohn, Eric J. Amis
Star polymers with a narrow distribution of sizes were labeled with fluorescent CdS nanoparticles, creating a new class of fluorescent probe molecules. Highly branched star polymers were prepared by attachment of poly(ethylene glycol) (PEG) arms to poly
Displaying 42926 - 42950 of 73896
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