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 15201 - 15225 of 73893

Tomography of a probe potential using atomic sensors on graphene

November 7, 2016
Author(s)
Jonathan E. Wyrick, Donat F. Natterer, Yue Y. Zhao, Kenji Watanabe, Takashi Taniguchi, William G. Cullen, Joseph A. Stroscio
One of the great advances in our ability to probe the quantum world has been the ability to manipulate the electronic structure of materials by constructing artificial nanostructures on surfaces using atomic manipulation of single adatoms with scanning

A Tetherless, Absolute-Time Channel Sounder, Processing, and Results for a Complex Environment

November 4, 2016
Author(s)
David R. Novotny, Alexandra E. Curtin, Catherine A. Remley, Peter B. Papazian, Jeanne T. Quimby, Richard Candell
we present a channel sounder that can operate without a tether and still maintain an absolute time reference between the source and receiver. Based on a sliding correlator, with synchronized rubidium clocks to generate phase references for the up- and down

Calibration of Effective Tunneling Bandgap in GaAsSb/InGaAs for improved TFET Performance Prediction

November 3, 2016
Author(s)
Quentin Smets, Anne S. Verhulst, Salim El Kazzi, David J. Gundlach, Curt A. Richter, Anda Mocuta, Nadine Collaert, Aaron Thean, Marc Heyns
The effective bandgap for heterojunction band-to-band tunneling (Eg,eff) is a crucial design parameter for heterojunction TFET. However, there is significant uncertainty on Eg,eff, especially for In0.53Ga0.47As/GaAs0.5Sb0.5. This makes TFET performance

Perpendicular magnetic anisotropy of two-dimensional Rashba ferromagnets

November 3, 2016
Author(s)
Kyoung-Whan Kim, Kyung Jin Lee, Hyun-Woo Lee, Mark D. Stiles
We compute the magnetocrystalline anisotropy energy within two-dimensional Rashba models. For a free- electron Rashba model with infinite band width and infinite Brillouin zone, the anisotropy is exactly zero no matter how strong the Rashba coupling is

Small Business Information Security: The Fundamentals

November 3, 2016
Author(s)
Patricia R. Toth, Celia Paulsen
NIST developed this NISTIR as a reference guideline for small businesses. This document is intended to present the fundamentals of a small business information security program in non-technical language.

Energy accommodation coefficient extracted from acoustic resonator experiments

November 2, 2016
Author(s)
Felix Sharipov, Michael R. Moldover
We review values of the temperature jump coefficient zeta_T determined from measurements of the acoustic resonance frequencies f_acoust of helium-filled and argon-filled, metal-walled, quasi- spherical cavities near ambient temperature. We combine these

Smoldering and Flame Resistant Textiles via Conformal Barrier Formation

November 2, 2016
Author(s)
Mauro Zammarano, Shonali Nazare, John R. Shields, Kathleen M. Hoffman, Rick D. Davis
A durable and flexible silicone-based backcoating (halogen and formaldehyde free) is applied to the backside of an otherwise smoldering-prone and flammable fabric. When exposed to fire, cyclic siloxanes (produced by thermal decomposition of the backcoating

Alterations in eicosanoid composition during embryonic development in the chorioallantoic membrane of the American alligator (Alligator mississippiensis) and domestic chicken (Gallus gallus)

November 1, 2016
Author(s)
John Bowden, Theresa M. Cantu, Jacob Scott, Jimena B. Perez-Viscasillas, Kevin M. Huncik, Matthew P. Guillette, Louis J. Guillette Jr.
Eicosanoids are signaling lipids that regulate several physiological processes in the mammalian placenta, including the initiation of parturition. Though all amniotes construct similar extraembryonic membranes during development, the composition and

Calibration of Time-interleaved Errors in Real-time Digital Oscilloscopes

November 1, 2016
Author(s)
Jeffrey A. Jargon, Chihyun Cho, Joo-Gwang Lee, Paul D. Hale, Peter J. Jeavons, John B. Schlager, Andrew M. Dienstfrey
A novel method is proposed for the calibration of channel mismatch in a time-interleaved real- time digital oscilloscope (RTDO). A simple simultaneous equation is derived from the Fourier transform of the time-interleaved signals requiring only a transfer

Catalyzed KSiH 3 as a Reversible Hydrogen Storage Material

November 1, 2016
Author(s)
Raphael Janot, Wan Si NMN Tang, Damien Clemencon, Jean-Noel Chotard
Solid-state hydrogen storage through the reversible formation of metallic hydrides is a key issue for the development of hydrogen as an energy vector. Herein reports the hydrogen storage performances of the KSiH 3 silanide phase ball-milled with NbF 5 as a

Chemical vs. Physical Acceleration of Cement Hydration: CaCl2 vs. Limestone Powder

November 1, 2016
Author(s)
Dale P. Bentz, Franco Zunino, Didier Lootens
Cold weather concreting often requires the use of chemical accelerators to speed up the hydration reactions of the cement, so that setting and early-age strength development will occur in a timely manner. While calcium chloride (dihydrate – CaCl2∙2H2O) is

CrO 3 Based Proton Conductors

November 1, 2016
Author(s)
Laura Mazzei, Max Wolff, Daniele Pergolesi, Joseph Dura, Lars Borjesson, Philipp Gutfreund, Marco Bettinelli, Thomas Lippert, Maths Karlsson
Epitaxial thin films of the proton conducting perovskite BaZr 0.53In 0.47O 3-δH^d0.47-2δ, grown by pulsed laser deposition, were investigated in their hydrated and dehydrated conditions through a multi-technique approach with the aim to study the structure

Development and Characterization of Reference Materials for Genetic Testing

November 1, 2016
Author(s)
Justin M. Zook, Marc L. Salit, Lisa V. Kalman, Mickey Williams, Vivekananda Datta, Jin-Yeong Han
Characterized reference materials (RM) are needed for test development and validation, quality control procedures and proficiency testing to assure the quality of clinical laboratory tests. In this article, we review the development and characterization of
Displaying 15201 - 15225 of 73893
Was this page helpful?