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NIST Authors in Bold

Displaying 35626 - 35650 of 74378

Flow visualization of heated CO2 gas using thermal imaging

January 1, 2006
Author(s)
Joseph P. Rice, Howard W. Yoon, M H. Brenner, N R. Briggs, J G. Gillen
Walk-through portal detection systems are being developed to screen passengers for the presence of explosives in support of homeland security. These portals utilize a series of air-jets to remove the explosive particles for detection using ion mobility

Force Calibration Via Electrostatics

January 1, 2006
Author(s)
Jon R. Pratt, John A. Kramar, Gordon A. Shaw, Lee Kumanchik
We describe the electrical and length measurements necessary to realize micronewton forces in a fashion consistent with the International System of Units (SI). We first discuss instrumentation and procedures required to accurately characterize an

Form-Profiling of Optics Using the Geometry Measuring Machine and NIST M-48 CMM

January 1, 2006
Author(s)
Nadia Machkour-Deshayes, John R. Stoup, John Lu, Johannes A. Soons, Ulf Griesmann, Robert S. Polvani
We are developing an instrument, the Geometry Measuring Machine (GEMM), to measure the profile errors of aspheric and free form optical surfaces, which require measurement uncertainties near 1nm. Using GEMM, an optical profile is reconstructed from a set

High Degree of Crystalline Perfection in Spontaneously Grown GaN Nanowires

January 1, 2006
Author(s)
Kristine A. Bertness, Alexana Roshko, Albert Davydov, Igor Levin, Mark D. Vaudin, Joy Barker, John B. Schlager, Norman Sanford, Larry Robins
We have grown a variety of isolated GaN nanowires using gas-source molecular beam epitaxy (MBE) and characterized their structural and optical properties. The nanowires have demonstrated a number of promising materials characteristics, including low defect
Displaying 35626 - 35650 of 74378
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