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Displaying 15601 - 15625 of 74324

Distinct Magnetic Spectra in the Hidden Order and Antiferromagnetic Phases in URu 2-x Fe x Si 2

November 7, 2016
Author(s)
Nicholas P. Butch, Sheng Ran, Inho Jeon, Noravee Kanchanavatee, Kevin Huang, Alexander Breindel, M. Brian Maple, Ryan L. Stillwell, Yang Zhao, Leland Weldon Harriger, Jeffrey W. Lynn
We use neutron scattering to compare the magnetic excitations in the hidden order (HO) and antiferromagnetic (AFM) phases in URu 2-xFe xFe xSi 2 as a function of Fe concentration. The magnetic excitation spectra change significantly between x=0.05 and x=0

Double Quantum Dot Floquet Gain Medium

November 7, 2016
Author(s)
Jacob M. Taylor, Michael Gullans, Jason Petta, J. Stehlik, Yinyiu Liu, Christopher Eichler, T Hartke, X Mi
A qubit coupled to a microwave resonator allows the study of fundamental light-matter interactions at the level of single photons1. The paradigm of circuit quantum electrodynam- ics (cQED) enables the generation of classical and non-classical light2–5

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 Jargon, Chihyun Cho, Joo-Gwang Lee, Paul D. Hale, Peter J. Jeavons, John B. Schlager, Andrew 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
Displaying 15601 - 15625 of 74324
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