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Displaying 46026 - 46050 of 74457

Generalization of a Two-Dimensional Micromagnetic Model to Nonuniform Thickness

June 1, 2001
Author(s)
Donald G. Porter, Michael J. Donahue
A two-dimensional micromagnetic model is extended to support simulation of films with non-uniform thickness. Zeeman and crystalline anisotropy energies are scaled by the local thickness, and exchange interaction between neighbor elements is scaled by the

Hard X-Ray Spectrometers for the National Ignition Facility

June 1, 2001
Author(s)
J Seely, C Back, R Deslattes, Lawrence T. Hudson, G Holland, P Bell, M Miller
A National Ignition Facility (NIF) core diagnostic instrument has been designed and will be fabricated to record x-ray spectra in the 1.1-20.1 keV energy range. The High-Energy Electronic X-Ray (HENEX) instrument has four reflection crystals with

High Performance Transition-Edge-Sensor Based Detectors

June 1, 2001
Author(s)
Gene C. Hilton, Steven Deiker, Kent D. Irwin, Sae Woo Nam, John M. Martinis, David A. Wollman
High performance detectors utilizing transition-edge sensors (TES) have been demonstrated for photon energies ranging from the infrared to the x-ray. In the soft x-ray band we have demonstrated the highest energy resolution yet achieved for any energy

High Temperature Lead-free Solder for Microelectronics

June 1, 2001
Author(s)
Frank W. Gayle, G Becka, J Badgett, G Whitten, TG Y. Pan, A Grusd, B B. Bauer, R Lathrop, J Slattery, I Anderson, J Foley, D Napp, J D. Mather, C Olson
This paper reports the result of a four-year industrial consortium effort to develop Pb-free solders for high temperature applications (up to 160 degrees c). Work included preliminary evaluation of 32 Sn-based alloys, a screening of the thermomechanical

History of the Symposium on Thermophysical Properties

June 1, 2001
Author(s)
William M. Haynes, Jan V. Sengers, R. T. Jacobsen, Daniel G. Friend
The Symposium on Thermophysical Properties represents a series of conferences that started in 1959 at Purdue University, which at the that time was the home of the Thermophysical Properties Research Center (TPRC), founded by Professor Yeram S. Touloukian

Industrial Autonomous Vehicle Project Report

June 1, 2001
Author(s)
Roger V. Bostelman, Maris Juberts, Sandor S. Szabo, Robert Bunch, John Evans
This report documents a National Institute of Standards and Technology (NIST) Intelligent Systems Division (ISD) effort to determine the status of Automatic Guided Vehicles (AGV's) in the United States with the goals of: 1) providing information to

Investigation of the Non-Uniqueness of the ITS-90 in the Range 660 C to 962 C

June 1, 2001
Author(s)
G T. Furukawa, Gregory F. Strouse
Preliminary results are reported on the non-uniqueness of the ITS-90 using high temperature SPRTs (HTSPRTs) in the range 660 C to 962 C. To achieve temperature stability and uniformity of the test HTSPRTs, the method employs the thermal isolation of the

LADAR Sensing Applications for Construction

June 1, 2001
Author(s)
Geraldine S. Cheok, William C. Stone
One potential breakthrough technology that stands to revolutionize construction surveying and status monitoring is known as laser range imaging. The device used to obtain the field data is known as a LADAR (Laser Distance and Ranging). With LADAR it is

Microhotplate Platforms for Chemical Sensor Research

June 1, 2001
Author(s)
Stephen Semancik, Richard E. Cavicchi, M C. Wheeler, J E. Tiffany, G Poirier, R M. Walton, John S. Suehle, B. Panchapakesan, D. E. DeVoe
This paper describes the development and use of microdevices and microarrays in chemical sensor research. The surface-micromachined microhotplate structure common within the various platforms included here was originally designed for fabricating

New NIST Mercury Triple-Point Cells

June 1, 2001
Author(s)
Gregory F. Strouse, J Lippiatt
Six new Hg triple-point (TP) cells (234.3156 K) were manufactured in the NIST PRT Laboratory for use in the realization of the International Temperature Scale of 1990 (ITS90). The fixed-point cells consisted of both glass and stainless steel designs with

NIST Activities in Support of Space-Based Radiometric Remote Sensing

June 1, 2001
Author(s)
Joseph P. Rice, B C. Johnson
This paper provides an overview of NIST research and development in optical radiometry in the field of space-based remote sensing. The applications in this field can be generally divided into two areas: environmental and defense. In the environmental
Displaying 46026 - 46050 of 74457
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