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NIST Authors in Bold

Displaying 1676 - 1700 of 2724

Precision ranging LIDAR using femtosecond fiber lasers

June 17, 2009
Author(s)
Nathan R. Newbury, Ian R. Coddington, William C. Swann
We discuss a coherent laser radar that uses two coherent femtosecond fiber lasers to perform absolute ranging at long distance. One coherent femtosecond fiber lasers acts as a source and the other as a local oscillator for heterodyne detection of the

Effect of Dissolved Nitrogen Gas on the Density of Di-2-Ethylhexyl Sebacate: Working Fluid of the NIST Oil Ultrasonic Interferometer Manometer Pressure Standard

June 1, 2009
Author(s)
Jay H. Hendricks, Jacob R. Ricker, Justin H. Chow, Douglas A. Olson
The National Institute of Standards and Technology (NIST) Low Pressure Manometry Laboratory maintains national pressure standards ranging from 1 mPa to 360 kPa through the operation of four ultrasonic interferometer manometer (UIM) pressure standards. NIST

High Strain Rate Tissue Simulant Measurements Using digital Image Correlation

June 1, 2009
Author(s)
Steven P. Mates, Richard L. Rhorer, Richard Everett, Kirth Simmonds, Amit Bagchi
Measuring the response of soft materials to high strain rate deformation is extremely challenging because of the difficulty of achieving dynamic equilibrium during high strain rate mechanical testing such as Kolsky bar testing. Digital image correlation

Calibration of Speed Enforcement Down-the-Road Radars

May 1, 2009
Author(s)
John R. Jendzurski, Nicholas G. Paulter Jr.
We examine the measurement uncertainty associated with different methods of calibrating the ubiquitous down-the-road (DTR) radar used in speed enforcement. These calibration methods include the use of audio frequency sources, tuning forks, a fifth wheel

Directions in Security Metrics Research

April 30, 2009
Author(s)
Wayne Jansen
More than 100 years ago, Lord Kelvin insightfully observed that measurement is vital to deep knowledge and understanding in physical science. During the last few decades, researchers have made various attempts to develop measures and systems of measurement

Reference Ballistic Chronograph

April 30, 2009
Author(s)
Nicholas G. Paulter Jr., Donald R. Larson
A ballistic chronograph with a measurement uncertainty of less than +/- 0.1 m/s has been designed, constructed and tested. Because of this low uncertainty, this chronograph can be used as a reference to calibrate and/or characterize the performance of

Three-Magon Splitting and Confluence Processes for Magnetostatic Backward Volume-Spin-Wave Excitations in Yttrium Iron Garnet Films

April 27, 2009
Author(s)
Pavel Kabos, Cesar O. Ordonez-Romero, Boris A. Kalinikos, Pavol Krivosik, Wei Tong, Carl E. Patton
Brillouin light scattering (BLS) has been used to observe and confirm the existence of nonlinear three magnon splitting and confluence processes for propagating spin waves in the magnetostatic backward volume wave (MSBVW) configuration. Wave vector and

EtherNet/IP Interoperability Recommendations

April 22, 2009
Author(s)
James D. Gilsinn, Kevin Knake
The EtherNet/IP interoperability recommendations are a result of work generated by the ongoing series of EtherNet/IP Implementors Workshops. The recommendations were created to promote EtherNet/IP device interoperability through product functionality

Reference Metrology in a Research Fab: The NIST Clean Calibrations Thrust

April 12, 2009
Author(s)
Ronald G. Dixson, Ndubuisi G. Orji, Joseph Fu, Thomas B. Renegar, Xiaoyu A. Zheng, Theodore V. Vorburger, Albert M. Hilton, Marc J. Cangemi, Lei Chen, Michael A. Hernandez, Russell E. Hajdaj, Michael R. Bishop, Aaron Cordes
In 2004, the National Institute of Standards and Technology (NIST) commissioned the Advanced Measurement Laboratory (AML) – a state-of-the-art, five-wing laboratory complex for leading edge NIST research. The NIST NanoFab – a 1765 m2 (19,000 ft2) clean

An Independent Measurement System for Testing Automotive Crash Warning Systems

April 2, 2009
Author(s)
Sandor S. Szabo, Joseph A. Falco, Richard J. Norcross
This report describes the National Institute of Standards and Technology's role in the Integrated Vehicle-Based Safety Systems (IVBSS) program, a four-year safety initiative sponsored by the United States Department of Transportation (U.S. DOT) to develop

Sensitivity of SEM width measurements to model assumptions

March 31, 2009
Author(s)
John S. Villarrubia, Zejun Ding
The most accurate width measurements in a scanning electron microscope (SEM) require raw images to be corrected for instrumental artifacts. Corrections are based upon a physical model that describes the sample-instrument interaction. Models differ in their

Report on Acceleration Comparison SIM.AUV.V-K1 - Draft B

March 20, 2009
Author(s)
David J. Evans, Adriana Hornikova, Stefan D. Leigh, Andrew L. Rukhin, William E. Strawderman
The first regional key comparison in vibration conducted under the auspices of the Inter-American System of Metrology (SIM) was begun in 1996. The comparison was registered with the International Bureau of Weights and Measures (BIPM) through the

Polymerization Stress Development in Dental Composites: Effect of Cavity Design Factor

March 13, 2009
Author(s)
Joseph M. Antonucci, Anthony A. Giuseppetti, Justin N. O'Donnell, Gary E. Schumacher, Drago Skrtic
Objective: To assess the effect of the cavity design factor (C-factor) on polymerization stress development (PSD) in resin composites. Methods: An experimental resin (BT resin) was prepared, which contained 2,2-bis[p-(2 hydroxy-3 -methacryloxypropoxy
Displaying 1676 - 1700 of 2724
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