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Electronics

Sensors

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Displaying 351 - 375 of 1387

Al-Mn Transition Edge Sensors for Cosmic Microwave Background Polarimeters

November 22, 2010
Author(s)
Daniel R. Schmidt, Hsiao-Mei Cho, Johannes Hubmayr, Peter J. Lowell, Michael D. Niemack, Galen C. O'Neil, Joel N. Ullom, Ki W. Yoon, Kent D. Irwin, W L. Holzapfel, M Lueker, E M. George, E Shirokoff
Superconducting transition edge sensors (TES) require superconducting films with transition temperatures (Tc)and properties that can be tailored to the particular requirements of individual applications. We have been developing Al-Mn films with a tunable

An Analytical Model for Pulse Shape and Electrothermal Stability in Two-Body Microcalorimeters

September 9, 2010
Author(s)
Douglas A. Bennett, Robert D. Horansky, Daniel R. Schmidt, Daniel S. Swetz, Leila R. Vale, Joel N. Ullom, Andrew Hoover, Michael W. Rabin, Nathan J. Hoteling
High resolution superconducting gamma-ray sensors show potential for the more accurate analysis of nuclear material. These devices are part of a larger class of microcalorimeters and bolometers based on transition edge sensors (TESs) that have two distinct

Quantum-Based SI Traceable Electric-Field Probe

July 25, 2010
Author(s)
Joshua A. Gordon, Christopher L. Holloway, Steven R. Jefferts, Thomas P. Heavner
We are presently investigating the feasibility of developing a technique that will allow direct traceable microwave electric field (E-field) measurements. The new approach is based on atomic rf-resonance spectroscopy, where an applied electrical field

IEEE 1451.5 STANDARDS-BASED WIRELESS SENSOR NETWORKS

July 1, 2010
Author(s)
Eugene Song, Kang B. Lee
Recent advances in wireless communications, networking, electronics, and microprocessors have enabled the development of low-cost, low-power wireless sensor nodes. Wireless sensor networks have become more widely used to monitor the condition of the

Code-division SQUID multiplexing

April 23, 2010
Author(s)
Michael D. Niemack, Kent D. Irwin, Joern Beyer, Hsiao-Mei Cho, William B. Doriese, Gene C. Hilton, Carl D. Reintsema, Daniel R. Schmidt, Joel N. Ullom, Leila R. Vale
Multiplexed superconducting quantum interference device (SQUID) readout systems are a critical technology for measuring large arrays of superconducting transition-edge sensor (TES) detectors. Current successful SQUID multiplexing architectures are

Wireless Sensor Network Performance Metrics for Building Applications

April 1, 2010
Author(s)
Won Suk Jang, William M. Healy
Metrics are investigated to help assess the performance of wireless sensors in buildings. Wireless sensor networks present tremendous opportunities for energy savings and improvement in occupant comfort in buildings by making data about conditions and

Interoperability Test of IEEE 1451.5 Standard-Based Wireless Sensors

March 13, 2010
Author(s)
Kang B. Lee, Yuyin Song
The Institute of Electrical and Electronics Engineers (IEEE) 1451 standard provides plug-and-play capability of smart transducers (sensors and actuators). Plug-and-play is an important aspect of interoperability, which is the ability of two or more systems
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