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Displaying 376 - 400 of 1384

Magnetic Noise in a Low-Power Picotesla Magnetoresistive Sensor

October 25, 2009
Author(s)
Stephen E. Russek, Lu Yuan, Sean Halloran, Fabio C. da Silva, David P. Pappas, John M. Moreland, Sy-hwang Liou, Rui Zhang
We present a design of a low power, compact, magnetoresistive sensor. The key features of the design are(1) decreasing the noise by the use of a 64 element magnetic tunnel junction (MTJ) bridge,(2) reducing the magnetic noise by annealing the MTJ sensors

A Standards-based Global Ocean Monitoring System

August 16, 2009
Author(s)
Eugene Song, Kang B. Lee
This paper describes a standards-based global ocean monitoring system developed at the National Institute of Standards and Technology (NIST) with collaborating partners. This system adapts the Institute of Electrical and Electronics Engineers (IEEE) 1451

Generating and Using Data of Higher Dimension for Gas-Phase Chemical Sensing

May 29, 2009
Author(s)
Baranidharan Raman, Joshua L. Hertz, Kurt D. Benkstein, Douglas C. Meier, Casey Mungle, Stephen Semancik
Methods to acquire and analyze rich data streams from sensors are helpful, if not required, to track chemical components within complex gas-phase environments. We describe a MEMS-based microsensor technology that populates multi-element arrays with

Instrument Interface Standards for Interoperable Ocean Sensor Networks

May 11, 2009
Author(s)
Kang B. Lee, Yuyin Song, Thomas O'Reilly, K. Headley, D. Edgington, C. Rueda, J. Zedlitz , J. Del Rio, E. Delory, S. Fairgrieve, L. Bermudez
The utility and cost-effectiveness of large scale instrument networks are enhanced by instrument interoperability. Today s oceanographic instruments are characterized by very diverse non-standard software protocols and data formats. This diversity of

Sensor Alert Web Service for IEEE 1451-Based Sensor Networks

May 7, 2009
Author(s)
Kang B. Lee, Yuyin Song
This paper describes the Sensor Alert Web Service (SAWS) for the Institute of Electrical and Electronics Engineers (IEEE) 1451-based sensor networks developed at the National Institute of Standards and Technology (NIST). The SAWS consists of the Sensor

CMOS Microhotplate Technology for Chemical and Biological Agent Detection

March 16, 2009
Author(s)
Muhammad Y. Afridi, Christopher B. Montgomery, Elliott cooper-Balis, Stephen Semancik, Jon C. Geist, Alim A. Fatah
In this paper we describe microhotplates that can serve as platforms for gas sensors of potential use for homeland security and other gas sensing applications. A brief review of the fabrication of microhotplate precursors in a CMOS-compatible technology

Integration of IEEE 1451 Smart Transducers and OGC-SWE Using STWS

February 17, 2009
Author(s)
Yuyin Song, Kang B. Lee
This paper describes the integration of IEEE 1451 smart transducers and Open Geospatial Consortium -Sensor Web Enablement (OGC-SWE) using the Smart Transducer Web Service (STWS). An integration architecture and a prototype system are presented. The

Ultra-high resolution alpha particle spectroscopy using calorimetry

September 23, 2008
Author(s)
Robert D. Horansky, Joel N. Ullom, James A. Beall, Gene C. Hilton, Kent D. Irwin, Don Dry, Beth Hastings, Stephen Lamont, Clifford R. Rudy, Michael W. Rabin
Calorimetry has been used since the late 1700?s to measure the heat output of physical processes ranging from chemical reactions to the respiration of organisms . Calorimetry is performed by measuring the temperature change caused by heat release into a
Displaying 376 - 400 of 1384