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Displaying 12801 - 12825 of 17284

Surface-Electrode Architecture for Ion-Trap Quantum Information Processing

September 1, 2005
Author(s)
J Chiaverini, Brad R. Blakestad, Joseph W. Britton, John D. Jost, C. Langer, Dietrich G. Leibfried, R Ozeri, David J. Wineland
We investigate a surface-mounted electrode geometry for miniature linear radio frequency Paul ion traps. The electrodes reside in a single plane on a substrate, and the pseudopotential minimum of the trap is located above the substrate at a distance on

Face Recognition Vendor Test 2002 Supplemental Report

February 1, 2004
Author(s)
Patrick J. Grother
Further analyses of the systems tested in the Face Recognition Vendor Test 2002 are reported. These supplement those covered in the primary Evaluation Report of March 2003. Specifically this report is intended to appeal to a more specialized audience; it

Temperature Measurement and Control in Microfluidic Systems

October 1, 2001
Author(s)
David J. Ross, Michael Gaitan, Laurie E. Locascio
We describe a technique for the measurement of fluid temperatures in microfluidic systems based on temperature-dependent fluorescence. The technique is easy to implement with a standard fluorescence microscope and CCD camera. The efficiency of the method

Absolute Transition Rates for Transitions From 5p Levels in Kr II

March 1, 2001
Author(s)
Krzysztof Dzierzega, Ulf Griesmann, Gillian Nave, L Bratasz
Branching ratios were measured for 155 electric dipole transitions from 5p and 5p1 levels of singly ionized Kr between 200 nm and 2400 nm. Of these, 83 were measured for the first time. Absolute transition rates for prominent lines, with uncertainties as

Fast Imaging of Hard X-Rays With a Laboratory Microscope

July 1, 2000
Author(s)
A S. Bakulin, S M. Durbin, Terrence J. Jach, J Pedulla
An improved x-ray microscope with a fully electronic CCD detector system has been constructed that allows improved laboratory-based microstructural investigations of materials with hard x-rays. It uses the Kirkpatrick-Baez multilayer mirror design to form

Evaluation of Uncertainties in Fundamental Radiometric Measurements

October 1, 1998
Author(s)
Benjamin K. Tsai, Bettye C. Johnson
The uncertainty of measurements is critical in furthering the development of radiometric science and acquiring an increased understanding of its principles. Proper analysis of measurement uncertainties provides an indication of how well the measurements

Statistical Models for Estimating the Measurement of Pitch in Metrology Instruments

January 1, 1996
Author(s)
Nien F. Zhang, Michael T. Postek, Robert D. Larrabee
The measurement of pitch in metrology instruments is through to be a benign self-compensating function. In the course of issuing the new scanning electron microscope standard SRM 2090, a new algorithm for the measurement of pitch was developed. This is

The NIST PDES Toolkit: Technical Fundamentals

May 1, 1992
Author(s)
Steve Clark, Donald E. Libes
The Product Data Exchange using STEP (PDES) is an emerging standard for the exchange of product information among various manufacturing applications. A software toolkit for manipulating PDES data has been developed at the National PDES Testbed at NIST. A

Cylindrical Acoustic Gas Thermometry

July 6, 2023
Author(s)
Li Xing, X.J. Feng, Ming-Hao Si, Jintao Zhang, Hong Lin, Keith Gillis, Michael Moldover
… (2) provide the immersion required by transfer temperature standards such as long-stemmed platinum resistance …

STEP-NC COMPLIANT DATA REPRESENTATIONS FOR POWDER BED FUSION IN ADDITIVE MANUFACTURING

November 11, 2022
Author(s)
Fahad Milaat, Paul Witherell, Martin Hardwick, Ho Yeung, Vincenzo Ferrero, Laetitia Monnier, Matthew Brown
Powder bed fusion (PBF) is an additive manufacturing (AM) technology that uses powerful beams to fuse powder material into layers of scanned patterns, thus producing parts with great geometric complexity. For PBF, process parameters, environmental control

Critical Capability Needs for Reduction of Transmission of SARS-CoV-2 Indoors

September 30, 2021
Author(s)
Jayne B. Morrow, Aaron Packman, Kenneth F. Martinez, Kevin V. Wymelenberg, Darla Geores, Delphine K. Farmer, Jade Mitchell, Lisa Ng, Yair Hazi, Monica Schoch-Spana, Sandra Quinn, Bill Bahnfleft, Paula Olsiewski
… Summit was held to gather information on current standards, policies and procedures applied to reduce … the effective application of existing knowledge and standards, emerging science, and lessons-learned from current …
Displaying 12801 - 12825 of 17284
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