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NIST Authors in Bold

Displaying 43301 - 43325 of 73697

Structural Magnetic and Thermal Stability of IrMn Exchange Biased Layers

May 1, 2002
Author(s)
Chang H. Lee, J G. Jung, Robert D. McMichael, R A. Fry, Andrew P. Chen, William F. Egelhoff Jr., V S. Gornakov
The magnetic domain structure, magnetic properties and thermal stability of IrMn biased top spin valves containing Co and NiFe have been investigated. The magneto-optical indicator film (MOIF) pictures of NiFe biased IrMn spin valve showed the formation

Temperature Effects During Capillary Rheometry Testing

May 1, 2002
Author(s)
Anthony J. Bur, S C. Roth, H Lobo
A non-contact temperature monitoring technique based on fluorescence spectroscopy was used to measure the temperature of a polymer resin during capillary rheometry testing. Polyethylene and polycarbonate doped with a fluorescent dye, perylene, were used in

The Effect of Irradiation Wavelength Bandwidth and Spot Size on the Scraping Depth and Temperature Rise in Composite Exposed to an Argon Laser or a Conventional Quartz-Tungsten-Halogen Source

May 1, 2002
Author(s)
R D. Pradhan, N Melikechi, F Eichmiller
Objectives: The purpose of this study was to investigate that effect of the effect of the spectral distribution of the curing irradiation near the maximum excitation wavelength of the photo-initiator and the effect of the irradiation spot size on the

The History and Importance of Impact Testing

May 1, 2002
Author(s)
Thomas A. Siewert, M P. Manahan, Christopher N. McCowan, J M. Holt, F J. Marsh
Charpy impact testing is a low-cost and reliable test method which is commonly required by the construction codes for fracture-critical structures such as bridges and pressure vessels. yet, it took from about 1900 to 1960 for impact-test technology and

The Status of the IEEE Standard on Transitions, Pulses, and Related Waveforms

May 1, 2002
Author(s)
Nicholas G. Paulter Jr., Donald R. Larson
In recent years, the IEEE has been revising the now expired IEEE standards on pulse techniques and definitions. This revision includes adding and deleting definitions, clarifying existing definitions, providing examples of different waveform types

The STEP Modular Architecture

May 1, 2002
Author(s)
Allison Barnard Feeney
The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP (STandard for the Exchange of Product model data). Subsequent Technical Notes discussed various issues faced by users of STEP and how the

Video Transmission for Multi-Hop Networks Using IEEE 802.11 FHSS

May 1, 2002
Author(s)
K Ban, Hamid Gharavi
In many applications such as construction, manufacturing, ground robotic vehicles, and rescue operations, there are many issues that necessitate the capability of transmitting digital video and that such transmissions should be performed wirelessly and in

Wafer Emissivity Effects on Light Pipe Radiometry in RTP Tools

May 1, 2002
Author(s)
Kenneth G. Kreider, David W. Allen, D H. Chen, D P. DeWitt, Christopher W. Meyer, Benjamin K. Tsai
We investigated the effect of different wafer emissivities and the effect of low emissivity films on RTP wafer temperature measurements using light pipe radiation thermometers (LPRTs). These tests were performed in the NIST RTP test bed. We used a NIST

Wavelength references for 1300-nm wavelength division multiplexing

May 1, 2002
Author(s)
Tasshi Dennis, E. A. Curtis, C. W. Oates, Leo W. Hollberg, Sarah L. Gilbert
We have conducted a study of potential wavelength calibration references for use as both moderate-accuracy transfer standards and high-accuracy National Institute of Standards and Technology (NIST) internal references in the 1280-1320 nm wavelength

Webpage for Optical Technology Division: SIRCUS Facility

May 1, 2002
Author(s)
Sally Bruce, Steven W. Brown, Keith R. Lykke
Spectral irradiance and Radiance Calibrations with Uniform Sources (SIRCUS) is a reference calibration facility that transfers detector based spectral irradiance scales derived from the High Accuracy Cryogenic Radiometer, to broadband filtered detector

Discharge of CF3I in a Cold Simulated Aircraft Engine Nacelle

April 30, 2002
Author(s)
Jiann C. Yang, Samuel L. Manzello, Marc R. Nyden, M D. Connaghan
An aircraft engine nacelle refers to the region between the engine body and its casing. Fuel and hydraulic lines, pumps, and lubrication systems are located within the nacelle. Air is vented through the nacelle to prevent any build-up of combustible vapors

Multi-Step Magnetic Switching in Single-Crystal (001) Co 2 MnGe Films

April 23, 2002
Author(s)
F Y. Yang, C H. Shang, T Ambrose, J J. Krebs, G A. Prinz, Valerian I. Nikitenko, V S. Gornakov, Alexander J. Shapiro, Robert D. Shull, C L. Chien
Multi-step magnetic switching with single, double, and triple loops has been observed in single-crystal (001) Co2MnGe Heusler alloy films epitaxially grown on GaAs (001) substrates due to a combined magnetic anisotropy consisting of cubic

Automatic Capture, Representation, and Analysis of User Behavior

April 22, 2002
Author(s)
Sharon J. Laskowski, J A. Landay, M Lister
With the advent of the Web and the refinement of instrumentation and monitoring tools, software user interactions are being captured on a much larger scale than ever before. Automated support for the capture, representation, and empirical analysis of user

Precessional switching in submicrometer spin valves

April 22, 2002
Author(s)
Shehzaad F. Kaka, Stephen E. Russek
Small spin valves are switched using a subnanosecond field pulse applied alongdg the magnetization hard-axis fields increases as the duration is decreased from 325 to 230 ps. This indicates a large-angle precessional motion in response to the transverse

Tri-Alpha-Napthyl Benzene as a Crystalline or Glassy MALDI Matrix

April 19, 2002
Author(s)
Barry J. Bauer, Charles M. Guttman, Da-Wei Liu, William R. Blair
Tri-alpha-napthyl benzene (TANB) is used as a matrix in matrix-assisted laser desorption/ionization (MALDI) spectroscopy. Electrosprayed TANB is crystalline and has a melting point of 180 2 C. A glass of TANB is obtained with a glass transition temperature

Performance of Personal Alert Safety Systems in Laboratory and Full-Scale Experiments

April 18, 2002
Author(s)
Nelson P. Bryner, Daniel M. Madrzykowski, D W. Stroup, J H. Lee
In 1998, over 500 firefighters in the United States were trapped in structure fires that resulted in injury or death of firefighters. Firefighters can be quickly overcome by the heat or smoke of a fire and may be unable to alert other fire ground personnel
Displaying 43301 - 43325 of 73697
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