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 29351 - 29375 of 143780

Report on the CCT Supplementary Comparison S1 of Infrared Spectral Normal Emittance/Emissivity

March 15, 2016
Author(s)
Leonard M. Hanssen, Boris Wilthan, Christian Monte, Joerg Hollandt, Jacques Hameury, Jean-Remy Filtz, Ferruccio Girard, Mauro Battuello, Juntaro Ishii
The National Measurement Institutes (NMIs) of the United States, Germany, France, Italy and Japan, have joined in an inter-laboratory comparison of their infrared spectral emittance scales. This action is part of a series of supplementary inter-laboratory

Surface conductance of graphene from non-contact resonant cavity

March 15, 2016
Author(s)
Jan Obrzut, Caglar Dogu Emiroglu, Oleg A. Kirillov, Yanfei Yang, Randolph E. Elmquist
A method is established to reliably determine surface conductance of single-layer or multi-layer atomically thin nano-carbon graphene structures. These can be synthesized by chemical vapor deposition (CVD), epitaxial growth on silicon carbide (SiC)

Updates to the NIST SCAP Validation Program and Associated Test Requirements

March 15, 2016
Author(s)
Melanie Cook, Larry Feldman, Gregory A. Witte
This bulletin summarizes the information presented in NISTIR 7511, Rev. 4, "Security Content Automation Protocol (SCAP) Version 1.2 Validation Program Test Requirements". This is the fourth revision of the NISTIR which defines the requirements and

Dispersion engineered resonator on-a-chip

March 14, 2016
Author(s)
Scott A. Diddams, Ki Youl Yang, Xu Yi, Hansuek Lee, Dong Yoon Oh, Kerry J. Vahala, Katja M. Beha, Daniel C. Cole, Pascal P. Del'Haye, Scott B. Papp
Control of dispersion in fiber optical waveguides has long been important in optical fiber communications systems, and more recently for continuum generation through self phase modulation. The wavelength at which the group velocity dispersion crosses zero

Dual-beam laser thermal processing of silicon photovoltaic materials

March 14, 2016
Author(s)
Brian J. Simonds, Anthony Teal, Tian Zhang, Joshua A. Hadler, Zibo Zhou, Sergey Varlamov, Ivan Perez-Wurfl
Laser processing for photovoltaics (PV) has traditionally been used for very small dimension features where focused beams are rastered to create lines for edge isolation, scribing, and selective emitter formation and for drilling holes for drilling in wrap

Neutron Scattering Studies of Spin-Phonon Hybridization and Superconducting Spin-Gaps in the High Temperature Superconductor La 2-x (Sr,Ba) x CuO 4

March 14, 2016
Author(s)
J.J. Wagman, J. P. Carlo, Jonathan Gaudet, G. Van Gastel, D. L. Abernathy, M. B. Stone, G. E. Granroth, A. I. Koleshnikov, A. T. Savici, Y. J. Kim, H. Zhang, D. Ellis, Yang Zhao, L. Clark, A. B. Kallin, E. Mazurek, H. A. Dabkowska, B. D. Gaulin
We present time-of- flight neutron-scattering measurements on single crystals of La 2-x^Ba xCuO 4 (LBCO) with 0 less than or equal to}xless than or equal to} 0:095 and La 2-xSr xCuO 4 (LSCO) with x = 0.08 and 0.11. This range of dopings spans much of the

The I/O transform of a chemical sensor

March 14, 2016
Author(s)
Nalin Katta, Douglas C. Meier, Kurt D. Benkstein, Stephen Semancik, Baranidharan Raman
A number of sensing technologies using a variety of transduction principles have been proposed for the purpose of non-invasive chemical sensing. A fundamental problem common to all sensing technologies is determining what features of the transducer's

Universal Dynamic Magnetism in Yb Pyrochlores with Disparate Ground States

March 14, 2016
Author(s)
A. M. Hallas, J. Gaudet, Nicholas Butch, M. Tachibana, R. S. Freitas, G. M. Lake, C. R. Wiebe, B. D. Gaulin
The ytterbium pyrochlore magnets, Yb 2B 2O 7 (B=Sn, Ti, Ge) are well described by S eff = 1/2 quantum spins with local XY anisotropy, decorating the cubic pyrochlore lattice and interacting via anisotropic exchange. Structurally, while only the non

Using Frequency Detuning to Improve the Sensitivity of Electric Field Measurements via Electromagnetically Induced Transparency and Autler-Townes Splitting In Rydberg Atoms

March 14, 2016
Author(s)
Christopher L. Holloway, Matthew T. Simons, Joshua A. Gordon
In this work we demonstrate an approach for improved sensitivity in weak RF electric-field measurements using Rydberg EIT in an atomic vapor. This is accomplished by varying the RF frequency around a resonant atomic transition and extrapolating the weak on

Automation of Antimicrobial Activity Screening

March 12, 2016
Author(s)
Samuel P. Forry, Meggan C. Madonna, Daneli Lopez-Perez, Nancy J. Lin, Madeleine D. Pasco
ABSTRACT: Manual and automated methods were compared for routine screening of compounds for antimicrobial activity. Automation generally accelerated assays and required less user intervention while producing comparable results. Automated protocols were

Finite element modeling of structural steel component failure at elevated temperatures

March 12, 2016
Author(s)
Mina S. Seif, Joseph A. Main, Jonathan M. Weigand, Therese P. McAllister, William E. Luecke
A key issue in evaluating the response of structural systems to fire effects is the representation of material behavior at elevated temperatures. In addition to stress-strain behavior, modeling of fracture is required to capture failure modes such as tear

A Compilation of Enthalpies of Formation for Hydrogen-Oxygen (HxOy) Species

March 11, 2016
Author(s)
Donald R. Burgess Jr.
In this work, we have compiled enthalpies of formation for nine hydrogen-oxygen species (HxOy) and selected values for use. The compilation consists of values derived from experimental measurements, quantum chemical calculations, and evaluations. This work
Displaying 29351 - 29375 of 143780
Was this page helpful?