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NIST Authors in Bold

Displaying 21651 - 21675 of 74165

Lattice damage in superconducting microcalorimeter detectors

June 3, 2013
Author(s)
Robert D. Horansky, Joel N. Ullom, Michael W. Rabin
There is currently significant interest in using superconducting detectors for measurement of ion kinetic energies. Unprecedented resolution is possible with an order of magnitude improvement over semiconductors. Superconducting detectors are now able to

Nanofluids, Heat-Transfer Equipment and Plain-Vanilla

June 3, 2013
Author(s)
Mark A. Kedzierski
Nanoparticle materials can be very inexpensive and the technology for producing nanofluids is mature. The production of inks, paints, coatings, and suntan lotions is old enough to be a very competitive industry. So, nanofluids probably set the benchmark

NIST/ASME Steam Properties, Version 3.0

June 3, 2013
Author(s)
Allan H. Harvey, Eric W. Lemmon
This is an update of NIST Standard Reference Database 10. The main purpose of the update is to convert the database to a new graphical user interface that works on 64-bit machines.

Non-equilibrium Fractional Quantum Hall state of light

June 3, 2013
Author(s)
Mohammad Hafezi, Jacob M. Taylor
We investigate the out-of-equilibrium dynamics in strongly interacting photonic systems. Specifically, we develop a method to investigate such system when they are externally driven with a coherent photonic field and evaluate relevant physical observables

Accelerated Stress Test Assessment of Through-Silicon Vias Using RF Signals

June 1, 2013
Author(s)
Chukwudi A. Okoro, Pavel Kabos, Jan Obrzut, Klaus Hummler, Yaw S. Obeng
In this work, radio frequency (RF) signal is demonstrated as an effective metrology tool for the assessment of the effect of thermal cycling on the reliability of through-silicon via (TSV) stacked dies. It was found that RF signal integrity of TSV daisy

Assessment of the glassy phase reactivity in fly ashes used for geopolymer cements

June 1, 2013
Author(s)
Paul E. Stutzman, Katherine Aughenbaugh, Maria Juenger
Geopolymer cements have not found widespread use as a portland cement replacement, in part due to the difficulty in proportioning mixtures in a reliable manner. Unlike portland cements, which are mixed with water, geopolymer cements contain caustic

Cryogen-free Operation of 10 V Programmable Josephson Voltage Standards

June 1, 2013
Author(s)
Logan A. Howe, Charles J. Burroughs, Paul D. Dresselhaus, Samuel P. Benz, Robert E. Schwall
Given the recent shortages of liquid helium, cryogen-free operation of superconducting devices such as programmable Josephson voltage standard (PJVS) systems has become preferred worldwide, and a necessity in some locations. Besides consistent and accurate

Flat Frequency Response in the Electronic Measurement of the Boltzmann Constant

June 1, 2013
Author(s)
Jifeng Qu, Horst Rogalla, Yang Fu, Jianqiang Zhang, Alessio Pollarolo, Samuel Benz
A new quantum voltage calibrated Johnson noise thermometer (JNT) was developed at NIM to demonstrate the electrical approach that determines the Boltzmann constant k by comparing electrical and thermal noise power. A measurement with an integration period

Method for Ensuring Accurate AC Waveforms with Programmable Josephson Voltage Standards

June 1, 2013
Author(s)
Charles J. Burroughs, Alain Rufenacht, Samuel Benz, Paul Dresselhaus
The amplitudes of stepwise-approximated sine waves generated by programmable Josephson voltage standards (PJVS) are not intrinsically accurate because the transitions between the quantized voltages depend on numerous conditions. We have developed a method

Modeling a Nationwide Public Safety Broadband Network

June 1, 2013
Author(s)
Richard A. Rouil, Antonio Izquierdo Manzanares, Michael R. Souryal, Camillo Gentile, David W. Griffith, Nada T. Golmie
As governments plan nationwide, interoperable broadband networks for their public safety services, the challenge arises of determining how and where to invest limited resources to meet demanding requirements. The United States is at the early stages of
Displaying 21651 - 21675 of 74165
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