NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 28251 - 28275 of 73697

Neutron Scattering Studies of LiCoPO 4 & LiMnPO 4

June 9, 2009
Author(s)
W. Tian, Jiying Li, Haifeng Li, Jeffrey W. Lynn, J. L. Zarestky, David Vaknin
LiCoPO 4 (T N approximately equal) 21.8 K ) & LiMnPO 4 (T N approximately equal} 34 K) are antiferromagnetic insulators exhibiting large magnetoelectric effects. We performed inelastic neutron scattering (INS) experiments to investigate the spin dynamics

Rubidium Vapor Cell with Integrated Bragg Reflectors for Compact Atomic MEMS

June 9, 2009
Author(s)
Maximillian Perez, Uyen Nguyen, Svenja A. Knappe, Elizabeth Donley, John Kitching, A Shkel
This paper reports on a method for improving the optical efficiency of micro-machined reflectors integrated in rubidium vapor cells for application in atomic MEMS sensors. A hybrid bulk micromachining and multilayer PECVD thin film process is used to form

Substrate-dependent interface composition and charge transport in films for organic photovoltaics

June 9, 2009
Author(s)
David Germack, Calvin Chan, Behrang Hamadani, Lee J. Richter, Daniel A. Fischer, David J. Gundlach, Dean DeLongchamp
The buried interface composition of polymer-fullerene blends is found by near edge X ray absorption fine structure (NEXAFS) spectroscopy to depend on the surface energy of the substrate upon which they are cast. The interface composition determines the

Atmospheric Retention of Man-made CO 2 Emissions

June 8, 2009
Author(s)
Bert W. Rust
Rust and Thijsse have shown that global annual average temperature anomalies T(t i) vary linearly with atmospheric CO 2 concentrations c(t i). The c(t i) can be related to man-made CO 2 emissions F(t i) by a linear regression model whose solution vector

Frequency Measurements of Al+ and Hg+ Optical Standards

June 8, 2009
Author(s)
Wayne M. Itano, James C. Bergquist, Till P. Rosenband, David J. Wineland, David Hume, Chin-wen Chou, Steven R. Jefferts, Thomas P. Heavner, Tom Parker, Scott Diddams, Tara Fortier
Frequency standards based on narrow optical transitions in 27Al+ and 199Hg+ ions have been developed at NIST. Both standards have absolute reproducibilities of a few parts in 10 17. This is about an order of magnitude better than the fractional uncertainty

Service Oriented and Orchestrated Framework for Supply Chain Integration

June 8, 2009
Author(s)
Jack C.P. Cheng, Kincho H. Law, Albert T. Jones, Ram D. Sriram
Supply chain management integrates key business processes and facilities, involving end users and suppliers that provide products, services and information. Supply chain integration can potentially add value to the stakeholders along product development

Integrated Broadband Lumped-Element Symmetrical-Hybrid N-way Power Dividers

June 7, 2009
Author(s)
Mike Elsbury, Paul D. Dresselhaus, Samuel P. Benz, Zoya Popovic
This paper presents a monolithically-integrated, broadband, lumped-element, symmetrical-hybrid power divider centered at 20 GHz which was designed and fabricated to uniformly distribute power to arrays of Josephson junctions for superconducting voltage

Lambda exonuclease digestion of CGG trinucleotide repeats

June 7, 2009
Author(s)
Richard Conroy, Alan Koretsky, John M. Moreland
Fragile X syndrome and other trinucleotide diseases are characterized by an elongation of a repeating DNA triplet. The ensemble-averaged lambda exonuclease digestion rate of diVerent substrates, including one with an elongated FMR1 gene containing 120 CGG

Number Fluctuations and Energy Dissipation in Sodium Spinor Condensates

June 5, 2009
Author(s)
Yingmei Liu, Eduardo N. Gomez, Stephen E. Maxwell, Lincoln D. Turner, Eite Tiesinga, Paul D. Lett
We characterize fluctuations in atom number and spin populations in F = 1 sodium spinor condensates. The time evolution of the population fluctuations shows a maximum. We interpret this as evidence of a dissipation-driven separatrix crossing in phase space

Test Tool for Industrial Ethernet Network Performance

June 5, 2009
Author(s)
James D. Gilsinn, Freemon Johnson
The number of devices that implement Ethernet interfaces on the factory floor is growing at an exponential rate along with the adoption of industrial-grade Ethernet networks on the plant floor. In addition to the sheer number of devices using industrial

Entangled Mechanical Oscillators

June 4, 2009
Author(s)
John D. Jost, Jonathan Home, Jason Amini, David Hanneke, R. Ozeri, Christopher Langer, John J. Bollinger, Dietrich G. Leibfried, David J. Wineland
Quantum mechanics describes the state and evolution of isolated systems, where entangled and superposition states can be created. Its application to large systems led Schr dinger to posit his famous cat, which exists in a superposition of alive and dead

High-brightness, low-noise, all-fiber photon pair source

June 4, 2009
Author(s)
Shellee D. Dyer, Burm Baek, Sae Woo Nam
We demonstrate an all-fiber photon pair source for the critical telecom C-band. We achieve high pair generation rates in excess of 10 MHz while maintaining coincidence-to-accidental ratios (CARs) greater than 100. This is one of the brightest and lowest

Machining Process Measurements: A Titanium Machining Example

June 4, 2009
Author(s)
Richard L. Rhorer, Eric P. Whitenton, Timothy J. Burns, Steven P. Mates, Jarred C. Heigel, April L. Cooke, Johannes A. Soons, Robert W. Ivester
NOTE: This is a two-page abstract for publication in the CD-ROM conference proceedings only. Oral presentation of the complete paper will be presented at the conference (SEM, June 1-4, 2009, Albuquerque). This paper discusses recent results of studying Ti

1V and 10V SNS Programmable Voltage Standards for 70 GHz

June 3, 2009
Author(s)
Franz Mueller, Ralf Behr, T. Weimann, Luis Palafox, David I. Olaya, Paul Dresselhaus, Samuel Benz
Programmable Josephson voltage standards (PJVSs) in combination with fast switchable DC current sources have opened up new applications in the field of low frequency AC metrology. The growing interest in output voltages of up to 10 V initiated efforts by

Amorphous Nb-Si Barrier Junctions for Voltage Standard and Digital Applications

June 3, 2009
Author(s)
David I. Olaya, Paul Dresselhaus, Samuel Benz, Jon E. Bjarnason, Erich N. Grossman
Amorphous Nb-Si has been previously demonstrated as a Josephson junction barrier material for Nb-based superconducting voltage standard circuits, including both dc programmable and ac Josephson voltage standards operating at frequencies up to 20 GHz. This

DSQAP Exercise C Report

June 3, 2009
Author(s)
Catherine A. Rimmer, Laura J. Wood, Katrice A. Lippa, Melissa M. Phillips

Flexible Solution-Processed Memristors

June 3, 2009
Author(s)
Nadine E. Gergel-Hackett, Behrang H. Hamadani, B Dunlap, John S. Suehle, Curt A. Richter, Christina A. Hacker, David J. Gundlach
We have fabricated physically flexible nonvolatile memory devices using inexpensive, room-temperature, solution processing. The behavior of these devices is consistent with that of a memristor device, the missing fourth circuit element theoretically

Microwave Packaging for Voltage Standard Applications

June 3, 2009
Author(s)
Mike Elsbury, Charles J. Burroughs, Paul Dresselhaus, Zoya Popovic, Samuel Benz
Improvements to the packaging of Josephson Volt- age Standard (JVS) circuits have increased operating margins, reliability, and longevity of these systems. By using the "flip- chip-on-flex" technique, reliable chip and cryoprobe mounting have been
Displaying 28251 - 28275 of 73697
Was this page helpful?