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NIST Authors in Bold

Displaying 47401 - 47425 of 73830

Micromechanical Detectors for Ferromagnetic Resonance Spectroscopy

September 1, 2000
Author(s)
John M. Moreland, Pavel Kabos, Albrecht Jander, M. Loehndorf, Robert McMichael, C G. Lee
We demonstrate micromechanical detection of ferromagnetic resonance (FMR) in thin magnetic films. FMR spectroscopy is performed on nanometer scale samples integrated with a micromachined silicon cantilever. We present several techniques by which the FMR

Model for Cyclic Fatigue of Quasi-Plastic Ceramics in Contact with Spheres

September 1, 2000
Author(s)
K -. Lee, Yeon-Gil G. Jung, I M. Peterson, Brian R. Lawn, D H. Kim, S K. Lee
A model of contact damage accumulation from cyclic loading with spheres and ensuing strength degradation in relatively tough, heterogeneous ceramics is developed. The damage takes the form of a quasiplastic zone beneath the contact, consisting of an array

Molecular Dynamics Study of Ions in Water

September 1, 2000
Author(s)
Raymond D. Mountain
The results of a molecular dynamics simulation study of the structure of the solvation shell about sodium, chlorine, and strontium ions in water are reported for ambient conditions and for three densities on the supercritical, T = 673 K isotherm. The

Nonlinear Ultrasonic Assessment of Precipitation Hardening in ASTM A710 Steel

September 1, 2000
Author(s)
Donna C. Hurley, Davor Balzar, P T. Purtscher
We investigated several specimens of ASTM A710 steel containing copper-rich precipitates with variations in the final aging treatment. X-ray diffraction line-broadening and small-angle neutron-scattering experiments revealed the existence of the

On the Dispersion of Lightning Current After a Direct Flash to a Building

September 1, 2000
Author(s)
Francois D. Martzloff
Simplifications often made when simulating the dispersion of lightning current can yield results that depart too much from the complex reality of a direct lightning flash to a building. The unpredictable occurrence of side-flashes increases even more the

Radiometric Calibration History of Visible and Near-Infrared Portable Radiometers

September 1, 2000
Author(s)
Bettye C. Johnson, Steven W. Brown, Howard W. Yoon
The National Institute of Standards and Technology (NIST), with the support of the National Aeronautics and Space Administration (NASA), has built several transfer radiometers that are used in radiometric measurement comparisons to validate spectral

Refrigerant/Lubricant Mixture Boiling Heat Transfer Research at NIST

September 1, 2000
Author(s)
Mark A. Kedzierski
This paper overviews the boiling heat transfer research of the recent few years at NIST (National Institute of Standards and Technology) on refrigerant/lubricant mixtures. The aim of the research was to fundamentally understand the effects of lubricant

Relationship Between Thermocouple and Radiation Thermometer Measurements

September 1, 2000
Author(s)
D P. DeWitt
The purpose of this vuegraph presentation is to describe the relationship between temperatures measured by thermocouples (contact) and radiation thermometers (RTs). The procedures are discussed for calibration of light-pipe RTs (LPRTs) using blackbodies

Repeatability of Energy Consumption Test Results for Compact Refrigerators

September 1, 2000
Author(s)
David A. Yashar
Recently, the United States Department of Energy (DOE) has been interested in examining the current procedure that is used to measure the energy consumption of compact refrigerators (ANSI/AHAM HRF-1). As part of the DOE's Appliance Standards Program, NIST

Semiconductor Characterization and Analytical Technology

September 1, 2000
Author(s)
Thomas J. Shaffner
The utility of semiconductor characterization techniques continues to be measured by industry requirements for smaller device geometry, atomically smooth surfaces and interfaces, and increased material purity. Those techniques that specialize in the

Single Fiber Composites: A New Methodology for Determinig Interfacial Shear Strength

September 1, 2000
Author(s)
Gale A. Holmes, Donald L. Hunston, Walter G. McDonough, R C. Peterson
Two of the critical factors controlling the long-term performance and durability of composites in structural applications is the fiber-matrix interfacial shear strength (IFSS) and the durability of the fiber-matrix interface. The single fiber fragmentation

SMAT: Synchronous Multimedia and Annotation Tool

September 1, 2000
Author(s)
Michelle P. Steves, Mudumbai Ranganathan, Emile L. Morse
We describe the design and use of SMAT (Synchronous Multimedia and Annotation Tool), a tool designed to be part of a scientific collaboratory for use in a robotic-arc-welding research project at the National Institute of Standards and Technology (NIST)
Displaying 47401 - 47425 of 73830
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