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Metrology

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Displaying 1151 - 1175 of 2730

NIST Micronutrients Measurement Quality Assurance Program Winter 2004 Comparability Studies: Results for Round Robin LV Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 20 Ascorbic Acid in Human Serum

June 27, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2005 Comparability Studies: Results for Round Robin LVII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 22 Ascorbic Acid in Human Serum

June 27, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

NIST Micronutrients Measurement Quality Assurance Program Winter 2006 Comparability Studies: Results for Round Robin LIX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 24 Ascorbic Acid in Human Serum

June 27, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat- and water-soluble vitamins and carotenoids in human serum and plasma. This report describes

On the Field Evaporation Behavior of c-axis GaN Nanowires in Laser-Pulsed Atom Probe Tomography

June 26, 2013
Author(s)
Matthew D. Brubaker, Kristine A. Bertness, Norman A. Sanford, Brian Gorman, David R. Diercks, R Kirchofer
GaN has seen use in many applications such as photovoltaics, blue and ultraviolet lasers, and light-emitting diodes with additional research into expanded and new applications. GaN in the form of nanowires present additional possibilities due to their high

Evaluation of dome-input geometry for pyroelectric detectors

June 24, 2013
Author(s)
Jinan Zeng, Leonard M. Hanssen, George P. Eppeldauer
Dome-input pyroelectric radiometers with different black coatings were developed to extend the spectral responsivity scale from near infrared (NIR) to 20 μm. The reflective dome with shiny gold-coating has been known to be an efficient light trap to

Cubic Silsesquioxanes as Tunable High Performance Coating Materials

June 19, 2013
Author(s)
Christopher Soles, Hyun W. Ro, Aaron Forster, Dave J. Krug, Vera Popova, Richard M. Laine
In this manuscript a series of cubic silsequioxane monomers with their eight vertices functionalized with different organic ligands terminated with triethoxysilane groups were acid hydrolyzed, spin cast into thin films, and then vitrified into hard

Radio-Frequency and DC Electrical Characterization on a Modular MEMS Mechanical Test Platform for Nanomaterials

June 16, 2013
Author(s)
J. J. Brown, Thomas Mitchell (Mitch) Wallis, Pavel Kabos, Kristine A. Bertness, Norman Sanford, Victor Bright
In order to enable radio frequency (RF) data collection from a micromechanical system designed to strain nanomaterials, a coplanar electrical waveguide has been integrated with an actuated microscale stage. RF (100 MHz to 20 GHz) admittance measurements

The Effect of Turbulence on a Multi-Hole Pitot Calibration

June 10, 2013
Author(s)
Christopher J. Crowley, Iosif I. Shinder, Michael R. Moldover
Abstract- Accurate calibrations of multi-hole Pitot tubes require thousands of measurements spanning ranges of the fluid’s velocity, and the pitch and yaw angles. When calibrating a commercially-manufactured multi-hole Pitot tube in NIST’s low-turbulence

SHREC13 Track: Large Scale Sketch-Based 3D Shape Retrieval

June 6, 2013
Author(s)
Afzal A. Godil, Bo Li , Yijuan Lu, Tobias Schreck
Sketch-based 3D shape retrieval has become an important research topic in content-based 3D object retrieval. The aim of this track is to measure and compare the performance of sketch-based 3D shape retrieval methods based on a large scale hand-drawn sketch

A REFERENCE MEASUREMENT SYSTEM FOR ELECTROSHOCK WEAPONS

June 3, 2013
Author(s)
Nicholas G. Paulter Jr., Donald R. Larson
We have developed a measurement system to accurately measure the electrical current and high-voltage output of electroshock weapons (ESW) that are used to deliver an electrical stimulus to humans for the purpose of incapacitation. Since the output of

Effect of Organic SAMs on the Evolution of Strength of Silicon Nanostructures

June 3, 2013
Author(s)
Scott Grutzik, Brian G. Bush, Frank W. DelRio, Richard S. Gates, Melissa Hines, Alan Zehnder
The ability to accurately predict the strength of nanoscale, single crystal structures is critical in micro- and nano-electromechanical systems (MEMS and NEMS) design. Because of the small length scales involved failure does not always follow the same

Traceability for Aerosol Electrometer in the fA Range

June 1, 2013
Author(s)
Dean G. Jarrett, Miles Owen
Described here are the configurations and procedures used to provide traceability to electrical standards for an aerosol electrometer calibration in the range ± 20 fA to ± 40 fA. The technique used here simulated the condition of a current induced when

The Development and Implementation of Quality Assurance Programs to Support Nutritional Measurements

May 24, 2013
Author(s)
Lane C. Sander, Mary Bedner, David L. Duewer, Katrice A. Lippa, Melissa M. Phillips, Karen W. Phinney, Catherine A. Rimmer, Michele M. Schantz, Katherine E. Sharpless, Susan Tai, Jeanice M. Brown Thomas, Stephen A. Wise, Laura J. Wood, J. M. Betz, Paul M. Coates
The National Institute of Standards and Technology administers quality assurance programs devoted to improving measurements of nutrients and related metabolites in foods, dietary supplements, and serum and plasma samples. These programs have been developed
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