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Displaying 8601 - 8625 of 17269

Josephson-Based Full Digital Bridge for High-Accuracy Impedance Comparisons

June 24, 2016
Author(s)
Frederic Overney, Nathan Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna Fox, Jason Underwood, Andrew D. Koffman, Samuel P. Benz
This paper describes a Josephson-based full digital impedance bridge capable of comparing any two impedances, regardless of type (R-C, R-L, or L-C), over a large frequency range. At the heart of the bridge are two Josephson arbitrary waveform synthesizer

Green Button: Building an Interoperable Ecosystem

November 25, 2014
Author(s)
Martin J. Burns, John A. Teeter, David A. Wollman
Our goal in the Green Button Initiative is to provide electricity customers with easy access to their energy usage data in a consumer-friendly and computer-friendly format, and to develop an interoperable ecosystem for utilities, manufacturers, and

Accurate determination of the size distribution for polydisperse, cationic metallic nanomaterials by asymmetric-flow field flow fractionation

November 13, 2014
Author(s)
Julien C. Gigault, Thao M. Nguyen, John M. Pettibone, Vincent A. Hackley
In this work we have developed and validated a methodology for determining the size distribution in polydisperse cationic nanoparticle (NP) samples using asymmetric-flow field flow fractionation (A4F), where known compositional influence of previously used

Mass spectrometry quantification of clusterin in the human brain

August 20, 2012
Author(s)
Junjun J. Chen, Meiyao M. Wang, Illarion V. Turko
A multifunctional glycoprotein clusterin has been associated with late-onset Alzheimer’s disease (AD). This finding should prompt further investigation to define the role of clusterin in AD phenotypes. For that reason, the development of techniques to

Determination of Elements in SRM Soil 2709a by Neutron Activation Analysis

December 1, 2009
Author(s)
Rick L. Paul, Elizabeth A. Mackey, Rolf L. Zeisler, Rabia Oflaz, Bryan E. Tomlin
A combination of instrumental neutron activation analysis (INAA) and prompt gamma-ray activation analysis (PGAA) was used to value assign 35 elements in SRM soil 2709a (San Joaquin Soil). INAA with counting of short-lived radioisotopes was used for

Turnstile Operation Using a Silicon Dual-Gate Single-Electron Transistor

October 1, 2003
Author(s)
Yukinori Ono, Neil M. Zimmerman, Kenji Yamazaki, Yasuo Takahashi
A single-electron turnstile has been demonstrated using a silicon-based dual-gate single-electron transistor (SET). Each gate controls independently the closing and opening of the channel acting as the SET lead, which enables single-electron transfer

Test Structures for Referencing Electronics Linewidth Measurements to Silicon Lattice Parameters Using HRTEM

April 8, 2002
Author(s)
Richard A. Allen, Michael W. Cresswell, Christine E. Murabito, William F. Guthrie, Loren W. Linholm, Colleen E. Hood, E. Hal Bogardus
A technique has been developed to certify the linewidths of the features of a prototype reference materials for the calibration of CD (Critical-Dimension) metrology instruments. The reference features are fabricated in mono-crystalline-silicon with the

Thermal-Infrared Scale Verifications at 10 um Using the NIST EOS TXR

November 1, 2000
Author(s)
Joseph P. Rice, S C. Bender, W H. Atkins
One element of a multi-year calibration program between NIST and the NASA EOS Project Science Office has been the development and deployment of a portable transfer radiometer for making verifications of the thermal-infrared scales being used for flight

Dimensional Metrology of Millimeter- and Sub-millimeter-scale Components

October 1, 2000
Author(s)
Theodore V. Vorburger, Jun-Feng Song, Joseph Fu, M Tundermann, Thomas Brian Renegar, Theodore D. Doiron, N G. Orji
Decreasing sizes and tolerances of engineering components bring a demand for decreasing uncertainty in the dimensional measurements of these parts. Hence there is increasing need for measuring machines capable of performing dimensional and geometrical

Leakage and Counting Errors in a Seven-junction Electron Pump

September 1, 1999
Author(s)
Richard L. Kautz, Mark W. Keller, John M. Martinis
Leakage and counting errors are explored experimentally in a well-characterized seven-junction electron pump and compared with predictions of the orthodox theory, including cotunneling.
Displaying 8601 - 8625 of 17269
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