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Displaying 401 - 425 of 1184

The case for a U(1) p Quantum Spin Liquid Ground State in the Dipole-Octupole Pyrochlore Ce 2 Zr 2 O 7

September 7, 2021
Author(s)
E. Smith, O. Benton, D. Yahne, B. Placke, Jonathan Gaudet, J. Dudemaine, A. Fitterman, J. Beare, A. Wildes, S. Bhattacharya, T. DeLazzer, C.R.C. Buhariwalla, Nicholas Butch, R. Movshovich, J. Garrett, C. Marjerrison, J. Clancy, E. Kermarrec, G. Luke, A. Bianchi, K. A. Ross, B. Gaulin
… degrees of freedom in the pyrochlore magnet Ce 2 Zr 2 O 7 are known to possess dipole-octupole (DO) character, making … report new heat capacity (Cp) measurements on Ce 2 Zr 2 O 7 which rise sharply at low temperatures, initially … to that observed in the dipolar spin ice Ho 2 Ti 2 O 7 and likely arising from long-range dipolar interactions. We …

COMPOSITION DETERMINATION OF LOW-PRESSURE GAS-PHASE MIXTURES BY 1H NMR SPECTROSCOPY

March 4, 2019
Author(s)
Chris Suiter, Mark O. McLinden, Thomas J. Bruno, Jason A. Widegren
1H NMR spectroscopy was used to analyze vapor-phase mixtures of methane and propane at low to moderate pressures. The mixtures were prepared gravimetrically and had low uncertainty in their composition. The primary mixture used for this work had a methane

Measured Wavelength-Dependent Absorption Enhancement of Internally Mixed Black Carbon with Absorbing and Nonabsorbing Materials

June 30, 2016
Author(s)
Rian You, James Radney, Michael R. Zachariah, Christopher D. Zangmeister
… BC had a mass-specific absorption cross section (MAC) of 7.89 +/- 0.25 m2 g-1 at lambda = 550 nm and an absorption … AS/BC, NaCl/BC, and HA/BC particles had AAEs of 1.43 +/- 0.05, 1.34 +/- 0.06, and 1.91 +/- 0.05, respectively. The observed absorption enhancement of …

Evaluation of Sustainable High-Volume Fly Ash Concretes

January 1, 2011
Author(s)
Alejandro Duran-Herrera, Cesar Juarez, P Valdez, Dale P. Bentz
This article presents results of an experimental research work oriented to develop practical tools for the regional concrete industry, as well as to illustrate the potential benefits of the synergistic effect of an ASTM C 618 Class F fly ash (FA) produced

Complete Methods Set for Scalable Ion Trap Quanum Information Processing

September 4, 2009
Author(s)
Jonathan Home, David Hanneke, John D. Jost, Jason Amini, Dietrich G. Leibfried, David J. Wineland
Building a quantum information processor capable of outperforming classical devices will require many quantum bits (qubits) and very large numbers of logical operations \cite{05Knill}. A key requirement is the faithful transport of qubits throughout the

(235), Martensite: An Inclusion-Theory Explanation

October 16, 2008
Author(s)
H M. Ledbetter, Martin Dunn
We consider what is, perhaps, martensite's greatest crystallographic problem: ferrous martensites with a habit plane p near (225)f, or viewed more recently as nearer (449)f or even (112)f. We predict p within 2.6 degrees of observation and on the (hhl)f

Control of the Frequency Comb From a Mode-Locked Erbium Doped Fiber Laser

October 12, 2021
Author(s)
J Rauschenberger, T M. Fortier, D J. Jones, Jun Ye, Steven T. Cundiff
We show that a stretched-pulse mode-locked fiber laser produces a well-defined frequency comb, providing a compact source of frequency combs and allowing comb-based optical frequency metrology to be extended into the 1.55 m region. This is achieved by

Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation

September 5, 2008
Author(s)
Andrew A. Herzing, Christopher J. Kiely, Albert F. Carley, Graham J. Hutchings
Gold nanocrystals absorbed on metal oxides have exceptional properties in oxidation catalysis, including the oxidation of carbon monoxide at ambient temperatures, but the identification of the active catalytic gold species among the many present on real

Chip-Scale Atomic Magnetometers

December 1, 2004
Author(s)
P Schwindt, Svenja A. Knappe, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John M. Moreland
… with an atom shot-noise limited sensitivity of 0.05 pT Hz-1/2. …

Shape Factors of ISO 12103-A3 (Medium Test Dust)

November 1, 2000
Author(s)
Robert A. Fletcher, David S. Bright
A new derivative of Arizona sand, ISO Medium Test Dust, is coming into use as a liquid optical particle count calibrant. ISO Medium Test Dust and optical particle counters are used to test filtering efficiency. Particle shape plays a role in both filtering

Observation of antiparallel magnetic order in weakly coupled Co/Cu multilayers

May 23, 1998
Author(s)
Julie Borchers, Joseph Dura, John Unguris, D Tulchinsky, Michael H. Kelley, Charles Majkrzak, S. Y. Hsu, R Loloee, W Pratt, J Bass
Polarized neutron reflectivity and scanning electron microscopy with polarization analysis are combined to determine the magnetic structure of Co(6 nm)/Cu(6 nm) multilayers. These data resolve a controversy regarding the low-field state of giant

Dynamic Arrest of Adhesive Hard Rod Dispersions

February 7, 2020
Author(s)
Ryan P Murphy, Harold Wickes Hatch, Nathan NMN Mahynski, Vincent K. Shen, Norman J. Wagner
… Τ = 15 -40 °C, aspect ration L/D{approximately equal}3-7, and volume fraction φ0.1-0.5. The critical gel temperature …

Design of an Ultrathin Cold Neutron Detector

June 11, 2018
Author(s)
A. Osovizky, Kevin N. Pritchard, Y. Yehuda-Zada, Jeffrey B. Ziegler, Louis E. Binkley, Peter NMN Tsai, Alan Keith Thompson, Nancy Hadad, M. Jackson, C. Hurlbut, George M. Baltic, Charles Majkrzak, Nicholas C. Maliszewskyj
… with a gamma ray rejection ratio on the order of 10 -7 . …
Displaying 401 - 425 of 1184
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