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NIST Authors in Bold

Displaying 1926 - 1950 of 2934

Radio-Frequency Glow Discharge Spectrometry A Critical Review

April 1, 2004
Author(s)
Michael R. Winchester, R Payling
This paper presents a critical review of analytical radio frequency glow discharge spectrometry (rf-GDS). The historical foundations of rf-GDS are described, and current knowledge of the fundamental physics of analytical rf glow discharges is discussed

X-Ray Topography

February 4, 2004
Author(s)
David R. Black, Gabrielle G. Long
The study of the interrelationships between processing, structure and properties of materials is fundamental to the field of materials science and engineering. The need to understand the microstructure of materials has driven the development of a wide

Review of Instrumented Indentation

August 1, 2003
Author(s)
Mark R. VanLandingham
Instrumented indentation, also known as depth-sensing indentation or nanoindentation, is increasingly being used to probe the mechanical response of materials from metals and ceramics to polymeric and biological meaterials. The additional levels of control

Comprehensive Microstructural Characterization and Predictive Property Modelling of Plasma-Sprayed Zirconia Coatings

May 1, 2003
Author(s)
A Kulkarni, Z G. Wang, T Nakamura, S Sampath, A N. Goland, Gabrielle G. Long, H Herman, J. Allen, J Ilavsky, G J. Long, J Frahm, R W. Steinbrech
hieving control of the microstructure of plasma-sprayed thermal-barrier coating (TBC) systems offers an opportunity to tailor coating properties to demanding applications. Accomplishing this requires a fundamental understanding of the correlations between

Numerical Analysis of a Coaxial Line With a Complex Gap Capacitance

May 1, 2003
Author(s)
Jan Obrzut, O Anopchenko
A full wave numerical analysis was performed for a coaxial line terminated by a complex gap capacitance. The scattering parameters, input impedance and the spatial distribution of the electromagnetic field have been obtained in the frequency range of 100

On Information and Performance of Complex Manufacturing Systems

February 1, 2003
Author(s)
Albert W. Jones, Larry H. Reeker, A S. Deshmukh
This paper makes several critical points related to the intrinsic relationship between information and performance in complex, dynamic systems. Using a manufacturing enterprise as an example, we highlight the co-dependence of information and decision

Combinatorial Methods for Investigations in Polymer Materials Science

April 1, 2002
Author(s)
J C. Meredith, A P. Smith, A J. Crosby, Eric J. Amis, Alamgir Karim
Combinatorial methods of drug discovery in pharmaceuticals research are well known and more recent applications have led to the discovery and synthesis of new inorganic materials, catalysts, and organic polymers. Polymeric coatings play an important role

Development of Combustion and Radiation Models for Large Scale Fire Simulation

September 13, 2001
Author(s)
Kevin B. McGrattan, J E. Floyd, Glenn P. Forney, Simo A. Hostikka, Howard R. Baum
In cooperation with the fire protection engineering community, a numerical fire model, Fire DynamicsSimulator (FDS), is being developed at NIST to study fire behavior and to evaluate theperformance of fire protection systems in buildings. Version 1 of FDS

Radiometric Characterization of Field Radiometers in Support of the 1997 Lunar Lake, Nevada, Experiment to Determine Surface Reflectance and Top-of-Atmosphere Radiance

September 1, 2001
Author(s)
Steven W. Brown, Bettye C. Johnson, Howard W. Yoon, James J. Butler, R Barnes, S F. Biggar, P R. Spyak, Kurtis J. Thome, E F. Zalewski, M Helmlinger, C J. Bruegge, S Schiller, G Fedosejevs, R Gauthier, S Tsuchida, S Machida
A continuing series of field campaigns to Lunar Lake, Nevada, has been established for the development of ground-truth measurement protocols and assessment of measurement uncertainties for the ground-based calibration of on-orbit satellite sensors. In June

The Candela and Photometric and Radiometric Measurements

January 1, 2001
Author(s)
Albert C. Parr
The national measurement system for photometric and radiometric quantities is presently based upon techniques and a measurement chain that make these quantities traceable to a high accuracy cryogenic radiometer. The redefinition of the candela in 1979

NIST Centennial Celebration Symposium Highlight

November 15, 2000
Author(s)
Alan D. Mighell, Winnie K. Wong-Ng
The Centennial Celebration of the National Institute of Standards and Technology (NIST), formerly known as the Bureau of Standards (NBS), takes place in the year 2001. NIST has a long history (>50 years) of crystallographic research, and has made

Experimental Investigation of the Initial-State Alignment Dependence in the Energy Pooling Process: Ca(4s4p 3 P 1 )+Ca(4s4p 3 P 1 )--> Ca(4s4p 1 P 1 )+Ca(4s 2 )

September 1, 1998
Author(s)
Harold V. Parks, E M. Spain, J E. Smedley, S R. Leone
A pulsed laser investigation is performed to study the detailed efforts of electronic angular momentum alignment on the cross section for the energy transfer process: Ca(4s4p 3P 1)+Ca(4s4p 3P 1)>Ca(4s4p 1P 1)+Ca(4s 2). A uniform magnetic field imposed by a

Stylus Technique for Direct Verification of Rockwell Diamond Indenters

November 23, 1995
Author(s)
Jun-Feng Song, F Rudder, Theodore V. Vorburger, J Smith
Based on a stylus technique, a microform calibration system was developed at NIST for the direct verification of Rockwell diamond indenters. The least-squares radius and profile deviations, cone angle and cone flank straightness, and the holder axis

Combustion Metrology: A Manifesto.

January 1, 1994
Author(s)
K C. Smyth
In the fall of 1985 Jene Golovchenko from Bell Laboratories presented a staff colloquium at the National Bureau of Standards (now NIST) on scanning tunnelling microscopy. This was an exciting time in surface science, since the tunnelling microscope was

Domain effects in faraday effect sensors based on iron garnets

January 1, 1992
Author(s)
M. N. Deeter
Domain effects in Faraday effect fiber-optic magnetic field sensors which employ thick films and bulk crystals of iron · garnets produce fundamentally different responses. Iron garnet films with uniaxial magnetic anisotropy exhibit domain-induced

Assessment of intra-build variations in tensile strength in electron beam powder-bed fusion Ti-6Al-4V part 2: Effects of powder mixing

May 31, 2022
Author(s)
Nicholas Derimow, Jake Benzing, Orion Kafka, Newell Moser, Priya Pathare, Michael Walker, Frank DelRio, Nik Hrabe
In Part 2 of this paper series, high-throughput tensile testing and characterization of porosity, microstructure, and oxygen content was carried out on Ti-6Al-4V samples that were fabricated via electron beam powder-bed fusion (PBF-EB) to test our

Large Field of View Quantitative Phase Imaging of Induced Pluripotent Stem Cells and Optical Pathlength Reference Materials

February 23, 2018
Author(s)
Edward J. Kwee, Alexander W. Peterson, Jeffrey R. Stinson, Michael W. Halter, Liya Yu, Michael P. Majurski, Joe Chalfoun, Peter Bajcsy, John T. Elliott
Induced pluripotent stem cells (iPSCs) are reprogrammed cells that can have heterogeneous biological potential. Quality assurance metrics of reprogrammed iPSCs will be critical to ensure reliable use in cell therapies and personalized diagnostic tests. We
Displaying 1926 - 1950 of 2934
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