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 13976 - 14000 of 73697

Confidence Estimates in Simulation of Phase Noise or Spectral Density

March 8, 2017
Author(s)
Neil Ashby
In this paper we apply the method of discrete simulation of power law noise, developed in [1,2], to simulation of phase noise for a combination of power law noises. We derive the probability of observing a value of phase noise L(f) or of any of the one

Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr 2 Zr 2 O 7

March 8, 2017
Author(s)
J.-J. Wen, S.M. Koohpayeh, K. A. Ross, B. A. Trump, T. M. McQueen, K. Kimura, S. Nakatsuji, Yiming Qiu, D. M. Pajerowski, John R. Copley, Collin L. Broholm
Inelastic neutron scattering reveals a broad continuum of excitations in Pr 2Zr 2O 7, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ}) acting on the non-Kramers Pr 3+ crystal

High-resolution valence and core excitation spectra of solid C60 via first-principles calculations and experiment

March 8, 2017
Author(s)
Eric L. Shirley, Keith Gilmore, Josh J. Kas, John J. Rehr, Fernando D. Vila, Frederic Fossard, Gilles Hug
We present calculated optical and carbon 1s near-edge spectra of crystalline and molecular C60 and those measured with high-resolution electron energy-loss spectroscopy. The near-edge calculations are carried out using three different methods: solution of

Liquid Chromatography Column Theory and Technology

March 8, 2017
Author(s)
Lane C. Sander
Column selection is probably the single most important aspect of method development that will directly affect measurement accuracy and precision of liquid chromatographic (LC) measurements. An understanding of physical and chemical properties of LC columns

Liquid Chromatography: Introduction to Method Development

March 8, 2017
Author(s)
Lane C. Sander
The development of fit-for-purpose analytical methods is an essential component of chemical metrology. This presentation will provide guidance on approaches for establishing robust analytical methods, particularly with applications to liquid chromatography

Sodium Layer Chiral Distribution and Spin Structure of Na 2 Ni 2 TeO 6 with a Ni Honeycomb Lattice

March 8, 2017
Author(s)
Sunil K. Karna, Yang Zhao, R. Sankar, M. Avdeev, P. C. Tseng, C. W. Wang, G. J. Shu, K. Matan, G. Y. Guo, F. C. Chou
The crystal structure of P2-type Na 2Ni 2TeO 6 is best described as layers that are composed of Te-centered edge-sharing NiO 6 octahedra in honeycomb lattice with intercalated Na ions in the van der Waals (vdW) gaps. Although the crystal symmetry has been

Solid Phase Extraction

March 8, 2017
Author(s)
Lane C. Sander
Solid Phase Extraction [video, running time 29 minutes 2 seconds] \\europa\839.02\training\Solid Phase Extraction (29.02 minutes).mp4 Lane C. Sander Chemical Sciences Division Material Measurement Laboratory National Institute of Standards and Technology

A Generalized Model of Flame to Surface Heat Feedback for Laminar Wall Flames

March 7, 2017
Author(s)
Isaac T. Leventon, Stanislav I. Stoliarov, Kevin T. Korver
In this work, experimental measurements of flame heat flux and sample mass loss rate are obtained as a flame spreads vertically upward over the surface of seven commonly used polymeric materials, two of which are glass reinforced composites. Using these

An optimized microfabricated platform for the optical generation and detection of hyperpolarized 129Xe

March 7, 2017
Author(s)
Daniel Kennedy, Scott J. Seltzer, Ricardo Jimenez Martinez, Hattie L. Ring, Nicolas S. Malecek, Svenja A. Knappe, Elizabeth Donley, John Kitching, Vikram S. Bajaj, Alexander Pines
Low thermal-equilibrium nuclear spin polarizations and the need for sophisticated instrumentation render conventional nuclear magnetic resonance spectroscopy and imaging incompatible with small-scale microfluidic devices. Recently a microfabricated device

Impurity driven Brownian motion of solitons in elon- gated Bose-Einstein Condensates

March 7, 2017
Author(s)
Ian B. Spielman, Lauren M. Aycock, Dina Genkina, Hsin I Lu, Hilary Hurst, Victor Galitski
Solitons, spatially-localized, propagating excitations resulting from an interplay be- tween nonlinearity and dispersion, are ubiquitous in physical systems from water channels1 and oceans2 to optical fibers3 and Bose- Einstein condensates (BECs)4. For the

Labeling Requirements for Packages Labeled Using In-Store Scales

March 7, 2017
Author(s)
David A. Sefcik
In the early 1950s, it became popular for supermarkets to offer random weight packaged meats and produce using in-store scales. The Uniform Packaging and Labeling Regulation (UPLR) in NIST Handbook 130, “Uniform Laws and Regulations in the Areas of Legal

Theory of Kondo suppression of spin polarization in nonlocal spin valves

March 7, 2017
Author(s)
Kyoung-Whan Kim, Liam O'Brien, Paul A. Crowell, C. Leighton, Mark D. Stiles
We theoretically analyze contributions from the Kondo effect to the spin polarization and spin diffusion length in all-metal nonlocal spin valves. Interdiffusion of ferromagnetic atoms into the normal metal layer creates a region in which Kondo physics

A Fast Summation Method for Oscillatory Lattice Sums

March 6, 2017
Author(s)
Ryan Denlinger, Leslie Greengard, Zydrunas Gimbutas, Vladimir Rokhlin
We present a fast summation method for lattice sums of the type which arise when solving wave scattering problems with periodic boundary conditions. While there are a variety of effective algorithms in the literature for such calculations, the approach

Arbitrarily fast quantum computation with bounded energy

March 6, 2017
Author(s)
Stephen P. Jordan
One version of the energy-time uncertainty principle states that the minimum time for a quantum system to evolve from a given state to any orthogonal state is h/(4 Δ E) where Δ E is the energy uncertainty. Many subsequent works have interpreted this as

Assessment of Closed Circuit Television Digital Video Recording and Export Technologies

March 6, 2017
Author(s)
Michael Garris, Mary T. Laamanen, Craig S. Russell, Lawrence D. Nadel
The National Institute of Standards and Technology (NIST) in collaboration with the Federal Bureau of Investigation (FBI) conducted research to define and recommend an interoperable data solution to assist law enforcement in acquiring and analyzing digital

Expanding lipidome coverage using LC-MS/MS data-dependent acquisition with automated exclusion list generation

March 6, 2017
Author(s)
John Bowden, Jeremy P. Koelmel, Nicholas M. Kroeger, Emily L. Gill, Candice Z. Ulmer, Rainey E. Patterson, Richard A. Yost, Timothy J. Garrett
Untargeted omics analyses aim to comprehensively characterize biomolecules within a biological system. Changes in the presence or quantity of these biomolecules can indicate important biological perturbations, such as those caused by disease. With current

Fair Resource Allocation in the Citizen Broadband Radio Service Band

March 6, 2017
Author(s)
Anirudha Sahoo
The Citizen Broadband Radio Service (CBRS) band has three tiers of users. The General Authorized Access (GAA) has the lowest priority and operates without a license. A Spectrum Access System (SAS) is responsible for managing spectrum among the users. The

Fast Sodium Ionic Conduction in Na 2 B 10 H 10 -Na 2 B 12 H 12 Pseudo-Binary Complex Hydride and Application to a Bulk-Type All-Solid-State Battery

March 6, 2017
Author(s)
Koji Yoshida, Toyoto Sato, Atsushi Unemoto, Motoaki Matsuo, Tamio Ikeshoji, Terrence J. Udovic, Shin-Ichi Orimo
In the present work, we developed highly ion-conductive Na 2B 10H 10-Na 2B 12H 12 closo-borane (solid-solution) salts via mechanically ball-milling admixtures of the pure Na 2B 10H 10 and Na 2B 12H 12 components. They were characterized by XRD, Raman

Molecular Dynamics Simulation of Trimer Self-Assembly Under Shear

March 6, 2017
Author(s)
Raymond D. Mountain, Harold Hatch, Vincent K. Shen
The self-assembly of patchy trimer particles with one attractive bead and two repulsive beads is investigated with nonequilibrium molecular dynamics simulations in the presence of a velocity gradient, as would be produced by the application of a shear
Displaying 13976 - 14000 of 73697
Was this page helpful?