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NIST Authors in Bold

Displaying 24426 - 24450 of 73930

Construction of a High Power OPO Laser system for Differential Absorption LIDAR

September 13, 2011
Author(s)
Kevin O. Douglass, Stephen E. Maxwell, David F. Plusquellic, Joseph T. Hodges, Roger D. van Zee, Daniel V. Samarov, James R. Whetstone
Our goal is to develop and characterize optical measurement technology to enable accurate quantification of greenhouse-gas emissions to meet the needs of industry and regulators. A 1064 nm pumped high energy optical parametric oscillator (OPO) operating

Contests in China Put Next-Gen Robot Technologies to the Test

September 13, 2011
Author(s)
Michael E. Newman, Stephen B. Balakirsky
This article describes the 2011 Robot Challenge that took place at the International Conference on Robotics and Automation in Shanghai, China. The quartet of contests-the Virtual Manufacturing Automation Competition (VMAC), the Mobile Microrobotics

An IEEE 1588 Performance Testing Dashboard for Power Industry Requirements

September 12, 2011
Author(s)
Julien M. Amelot, Ya-Shian Li-Baboud, Clement Vasseur, Jeffrey Fletcher, Dhananjay Anand, James Moyne
The numerous time synchronization performance requirements in the Smart Grid entails the need for a set of common metrics and test methods to verify the ability of the network system and its components to meet the power industry's accuracy, reliability and

Circuit-Aware Device Reliability Criteria Methodology

September 12, 2011
Author(s)
Jason T. Ryan, Lan Wei, Jason P. Campbell, Richard G. Southwick, Kin P. Cheung, Anthony Oates, John S. Suehle, Phillip Wong
Meeting reliability requirements is an increasingly more difficult challenge with each generation of CMOS technology. The disconnection between conventional one-size-fits-all reliability specifications and the wide range of circuit applications might be a

High Mobility Channel from the Prospective of Random Telegraph Noise

September 12, 2011
Author(s)
Kin P. Cheung, Jason P. Campbell
We experimentally verify for the first time that random telegraph noise (RTN) in ultra-scaled MOSFETs is related to the inversion charge density in the channel. We then examine the merit of high mobility channel devices from the RTN prospective. This

Interference Mitigation for Body Area Networks

September 12, 2011
Author(s)
Wen-Bin Yang, Kamran Sayrafian
Due to ultra-low power communication, BAN is most likely a victim system. Interference from other BANs or other coexisting wireless communication systems may be significant. Power control is usually inefficient and may even cause more interference in an

Structure of lithium peroxide

September 12, 2011
Author(s)
Eric L. Shirley, Maria K. Chan, Naba Karan, Mahalingam Balasubramanian, Yang Ren, Jeffrey P. Greeley, Timothy T. Fister
The reliable identification of lithium oxides species, especially lithium peroxide (Li2O2), is of vital importance to the study of Li-air batteries. Previous x-ray diffraction studies of Li2O2 resulted in the proposal of two disparate structures by Féher

Temperature Compensated (Net) Volume Direct from Mass Flow Meters

September 12, 2011
Author(s)
Marc A. Buttler
Temperature compensated (net) volume can currently be measured by mass flow meters using one of two methods: 1. Gross volume flow is measured by the device. Temperature of the fluid is measured. Net volume is then computed by applying traditional

Frequency-stabilization to 6x10 -16 via spectral-hole burning

September 11, 2011
Author(s)
Michael J. Thorpe, Tara M. Fortier, Matthew S. Kirchner, Till P. Rosenband, Lars Rippe
We demonstrate two-stage laser stabilization based on a combination of Fabry-Pérot and spectral-hole burning techniques. The laser is first pre-stabilized by the Fabry-Pérot cavity to a fractional-frequency stability of ς y(τ) -13. A pattern of spectral

A Field Study of User Behavior and Perception in Smartcard Authentication

September 9, 2011
Author(s)
Emile L. Morse, Celeste L. Paul, Aiping L. Zhang, Yee-Yin Choong, Mary F. Theofanos
A field study of 24 participants over 10 weeks explored user behavior and perception in a smartcard authentication system. Ethnographic methods used to collect data included diaries, surveys, interviews, and field observations. We observed a number of

Defining AFIS Latent Print "Lights-Out"

September 8, 2011
Author(s)
Stephen Meagher, Vladimir N. Dvornychenko
The term "lights-out" for AFIS ten-print fingerprint operations has been around for many years and is generally understood to mean "no human intervention is involved." But is this term appropriate for AFIS latent print operations? This IR examines seven

Effect of AlN Buffer Layer Properties on the Morphology and Polarity of GaN Nanowires Grown by Molecular Beam Epitaxy

September 8, 2011
Author(s)
Matthew D. Brubaker, Kristine A. Bertness, Norman A. Sanford, Albert Davydov, Igor Levin, Devin M. Rourke, Victor M. Bright
Low temperature AlN buffer layers grown by plasma-assisted Molecular Beam Epitaxy (MBE) on Si (111) were found to significantly affect the subsequent growth morphology of GaN nanowires. The AlN buffer layers exhibited nanowire-like columnar protrusions

Energy Price Indices and Discount Factors for Life-Cycle Cost Analysis - 2011

September 8, 2011
Author(s)
Amy S. Rushing, Joshua D. Kneifel, Barbara C. Lippiatt
This is the 2011 edition of energy price indices and discount factors for performing life-cycle cost analyses of energy and water conservation and renewable energy projects in federal facilities. It will be effective from April 1, 2011 to March 31, 2012

Near-ground-state transport of trapped-ion qubits through a multidimensional array

September 8, 2011
Author(s)
Dietrich G. Leibfried, Rodney B. Blakestad, Christian Ospelkaus, Aaron Vandevender, Janus Wesenberg, Michael J. Biercuk, David J. Wineland
We have demonstrated transport of 9Be+ ions through a 2D Paul-trap X-junction array while maintaining the ions near the motional ground-state of their local potential well. We expand on the first report of the experiment in [1], including a detailed

NIST Cloud Computing Reference Architecture

September 8, 2011
Author(s)
Fang Liu, Jin Tong, Jian Mao, Robert B. Bohn, John V. Messina, Mark L. Badger, Dawn M. Leaf
The adoption of cloud computing into the Federal Government and its implementation depend upon a variety of technical and non-technical factors. A fundamental reference point, based on the NIST definition of Cloud Computing, is needed to describe an

Extension of ThermoML: The IUPAC Standard for Thermodynamic Data Communications (IUPAC Recommendations 2011)

September 7, 2011
Author(s)
Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Paul L. Brown, John H. Dymond, Robert N. Goldberg, Anthony R. Goodwin, Heiko Heerklotz, Erich Koenigsberger, John E. Ladbury, Kenneth N. Marsh, David P. Remeta, Stephen E. Stein, William A. Wakeham, Peter A. Williams
ThermoML is an XML-based approach for storage and exchange of experimental, predicted, and critically evaluated thermophysical and thermochemical property data. Extensions to the ThermoML schema for the representation of speciation, complex equilibria, and

Pulse Terahertz Reflection/Scattering Measurement

September 7, 2011
Author(s)
Shu Z. Lo, Edwin J. Heilweil
We report a method to measure reflection and scattering from several samples with different degrees of surface roughness and material properties at terahertz frequencies. Reflection from a flat gold mirror shows that the full width half maximum (FWHM) of

Are Electron Tweezers Possible?

September 6, 2011
Author(s)
Vladimir P. Oleshko, James M. Howe
Positively answering the question above, we demonstrate in this work single electron beam trapping and steering of 20-100 nm solid Al nanoparticles generated inside opaque submicron-sized molten Al-Si eutectic alloy spheres. Imaging of solid nanoparticles

State Discriminiation Signal Nulling Receivers

September 6, 2011
Author(s)
Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Sergey V. Polyakov, Julius Goldhar, Jonathan Kosloski, Alan L. Migdall
Optimized state-discrimination receiver strategies for nonorthogonal states can improve the capacity of the communication channels operating with error rates below the ones corresponding to conventional receivers. Coherent signal-nulling receivers use a
Displaying 24426 - 24450 of 73930
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