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Search Publications by: David A. Wollman (Fed)

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Displaying 51 - 75 of 150

NIST COORDINATION OF SMART GRID INTEROPERABILITY STANDARDS

August 9, 2010
Author(s)
David A. Wollman, Gerald FitzPatrick, Paul A. Boynton, Thomas L. Nelson
The National Institute of Standards and Technology has efforts underway to accelerate the development of interoperability standards to support the future modernized "Smart Grid" electric grid or energy delivery network characterized by a two-way flow of

NIST Framework and Roadmap for Smart Grid Interoperability Standards, Release 1.0

January 10, 2010
Author(s)
George W. Arnold, David A. Wollman, Gerald FitzPatrick, Dean Prochaska, David Holmberg, David H. Su, Allen R. Hefner Jr., Nada T. Golmie, Tanya L. Brewer, Mark Bello, Paul A. Boynton
Under the Energy Independence and Security Act (EISA) of 2007, the National Institute of Standards and Technology (NIST) is assigned "primary responsibility to coordinate development of a framework that includes protocols and model standards for

NIST Accomplishments in Nanotechnology

January 1, 2006
Author(s)
Michael T. Postek, Joseph J. Kopanski, David A. Wollman
This document includes a list of selected NIST accomplishments in nanotechnology for the period of fiscal years 2004 and 2005. These accomplishments are grouped into the NNI s Program Component Areas (PCAs), which are defined in the text. The NNI has

Electron Probe Microanalysis with Cryogenic Detectors

July 9, 2005
Author(s)
Dale E. Newbury, Kent D. Irwin, Gene C. Hilton, David A. Wollman, John A. Small, John M. Martinis
Electron probe x-ray microanalysis is based upon the use of a focused, high current density electron beam, 5 keV to 30 keV in energy, to excite characteristic x-rays from a picogram mass of a solid target. X-ray spectral measurements are currently

Electron Probe Microanalysis

January 1, 2005
Author(s)
Dale Newbury, Kent D. Irwin, Gene C. Hilton, David A. Wollman, John A. Small, John M. Martinis

Energy Dispersive X-ray spectromety by Microcalorimetry for the SEM

January 1, 2002
Author(s)
Dale E. Newbury, David A. Wollman, Sae Woo Nam, Gene C. Hilton, Kent D. Irwin, John A. Small, John M. Martinis
Analytical x-ray spectrometry for electron beam instruments has been significantly advanced with the development of the NIST microcalorimeter energy dispersive x-ray spectrometer (mcal EDS). The mcal EDS operates by measuring the temperature rise when a

TES Detector Noise Limited Readout Using SQUID Multiplexers

January 1, 2002
Author(s)
Johannes G. Staguhn, C. A. Allen, D. J. Benford, James A. Chervenak, M. M. Freund, S. A. Khan, A. S. Kutyrev, S. H. Mosely, Rick A. Shafer, Steven Deiker, Erich N. Grossman, Gene C. Hilton, Kent D. Irwin, John M. Martinis, Sae Woo Nam, David A. Rudman, David A. Wollman
The availability of superconducting Transition Edge Sensors (TES) with large numbers of individual detector pixels requires multiplexers for efficient readout. The usage of multiplexers limits the number of wires needed between the cryogenic electronics

Progress Towards Arrays of Microcalorimeter X-ray Detectors

September 1, 2001
Author(s)
Sae Woo Nam, David A. Wollman, Dale Newbury, Gene C. Hilton, Kent D. Irwin, David A. Rudman, Steven Deiker, Norman F. Bergren, John M. Martinis
The high performance of single-pixel microcalorimeter EDS (υcal EDS) has been shown to be very useful for a variety of microanalysis cases. The primary advantage of υcal EDS over conventional EDS is that factor of 25 improvement in energy resolution (3 eV

High Performance Transition-Edge-Sensor Based Detectors

June 1, 2001
Author(s)
Gene C. Hilton, Steven Deiker, Kent D. Irwin, Sae Woo Nam, John M. Martinis, David A. Wollman
High performance detectors utilizing transition-edge sensors (TES) have been demonstrated for photon energies ranging from the infrared to the x-ray. In the soft x-ray band we have demonstrated the highest energy resolution yet achieved for any energy

Microfabricated Transition-Edge X-ray Detectors

March 1, 2001
Author(s)
Gene C. Hilton, John M. Martinis, Kent D. Irwin, Norman F. Bergren, David A. Wollman, Martin Huber, Sae Woo Nam
We are developing high performance x-ray detectors based on superconducting transition-edge sensors (TES) for application in materials analysis and astronomy. Using our recently developed fully lithographic TES fabrication process, we have made devices