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Search Publications

NIST Authors in Bold

Displaying 22751 - 22775 of 73783

Sensing Trace Amounts of Nitro-Aromatic Explosives using Nanowire-Nanocluster Hybrids

August 1, 2012
Author(s)
Geetha G. Aluri, Abhishek Motayed, Albert Davydov, Vladimir P. Oleshko, Kristine A. Bertness, Norman A. Sanford
The threat of terrorism and the need for homeland security calls for advanced technologies to detect the concealed explosives safely and efficiently. We demonstrated highly sensitive and selective detection of traces of nitro-aromatic explosive compounds

Using Viscosity Modifiers to Reduce Effective Diffusivity in Mortars

August 1, 2012
Author(s)
Kenneth A. Snyder, Dale P. Bentz, Jeffrey M. Davis
Three viscosity modifiers (a commercial shrinkage-reducing admixture, a polypropylene glycol, and cellulose ether) are used to reduce the effective diffusivity of chloride ions through mortars during a one-year exposure. Two delivery mechanisms were

A Literature Review of the Effects of Fire Smoke on Electrical Equipment

July 31, 2012
Author(s)
Richard D. Peacock, Thomas G. Cleary, Paul A. Reneke, Daniel Murphy
A review is presented of the state of the art of smoke production measurement, prediction of smoke impact as part of computer-based fire modeling, and measurement and prediction of the impact of smoke through deposition of soot on and corrosion of

Calibration uncertainty for the NIST PM/AM noise standards

July 31, 2012
Author(s)
Archita Hati, Craig W. Nelson, Neil Ashby, David A. Howe
NIST provides an on-site calibration service of the accuracy of phase modulation (PM) noise, amplitude modulation (AM) noise and noise floor of the measurement systems at a customer's site using one or more portable PM/AM secondary noise standards. In this

Efficient Methods for Interoperability Testing Using Event Sequences

July 31, 2012
Author(s)
David R. Kuhn, James M. Higdon, J .M. Lawrence, Raghu N. Kacker, Yu Lei
Many software testing problems involve sequences of events. The methods described in this paper were motivated by testing needs of mission critical systems that may accept multiple communication or sensor inputs and generate output to several communication

Mobile Application Device Power Usage Measurements

July 31, 2012
Author(s)
Rahul Murmuria, Jeffrey Medsger, Angelos Stavrou, Jeff Voas
Reducing power consumption has become a crucial design tenet for both mobile and other small computing devices that are not constantly connected to a power source. However, unlike devices that have a limited and predefined set of functionality, recent

Topography Measurements and Performance Comparisons between NIST SRM 2460 Standard Bullet Masters and BKA Bullet Replicas

July 31, 2012
Author(s)
Jun-Feng Song, Theodore V. Vorburger, Robert M. Thompson, Susan M. Ballou, Xiaoyu Alan Zheng, Thomas Brian Renegar, Richard M. Silver
Two Standard Reference Material (SRM) 2460 Bullets produced by the National Institute of Standards and Technology (NIST) were used as masters for the fabrication of replica bullets at the Bundeskriminalamt (BKA). The surface topography of the SRM masters

Information Retrieval on the Blogosphere

July 30, 2012
Author(s)
Ian M. Soboroff, Rodrygo Santos, Craig Macdonald, Richard McCreadie, Iadh Ounis
Blogs have recently emerged as a new open, rapidly evolving and reac- tive publishing medium on the Web. Rather than managed by a central entity, the content on the blogosphere—the collection of all blogs on the Web—is produced by millions of independent

On-chip, photon-number-resolving, telecom-band detectors for scalable photonic information processing

July 30, 2012
Author(s)
Thomas Gerrits, Nick Thomas-Peter, James Gates, Adriana E. Lita, Benjamin Metcalf, Brice R. Calkins, Nathan A. Tomlin, Anna E. Fox, Antia A. Lamas-Linares, Justin Spring, Nathan Langford, Richard P. Mirin, Peter Smith, Ian Walmsley, Sae Woo Nam
We demonstrate the operation of an integrated photon number resolving transition edge sensor (TES), operating in the telecom band at 1550 nm, employing an evanescently coupled design that allows the detector to be placed at arbitrary locations within a

Towards One-electron Ions in Rydberg States for Laser Spectroscopy

July 30, 2012
Author(s)
Joseph Tan, Samuel Brewer, Nicholas D. Guise
Simple quantum systems play important roles in the determination of fundamental constants. Very recently at NIST, bare nuclei created in an EBIT were extracted and captured in a novel compact Penning trap. This is a step towards production of one-electron

Transition edge sensors with low jitter and fast recovery times

July 30, 2012
Author(s)
Antia A. Lamas-Linares, Nathan A. Tomlin, Brice R. Calkins, Adriana E. Lita, Thomas Gerrits, Joern Beyer, Richard P. Mirin, Sae Woo Nam
Superconducting transition edge sensors (TES) for single photon detection have been shown to have almost perfect quantum efficiency (98%) at a wide range of wavelengths. Their high quantum efficiency combined with their ability to intrisically measure the
Displaying 22751 - 22775 of 73783
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