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Search Publications

NIST Authors in Bold

Displaying 526 - 550 of 2521

Bilateral Comparison Confirms NIMs and NISTs Gas Flow Capabilities

October 15, 2010
Author(s)
Aaron N. Johnson, CHUNHUI LI
… venturis (CFVs) with nominal throat diameters of 10 mm and 20 mm, respectively, were selected as transfer standards. The CFVs were calibrated on NIM’s 20 m3 pVTt system and then on NIST’s 26 m3 pVTt system. The …

Low-temperature Growth of GMR Spin Valves

January 1, 1996
Author(s)
William F. Egelhoff Jr., R Misra, T Ha, Y Kadmon, Cedric J. Powell, Mark D. Stiles, Robert McMichael, Lawrence H. Bennett, C Lin, J Sivertsen, J Judy
… spin valve multilayers of the general type: FeMn/Ni 80 Fe 20 /Co/Cu/Co/Ni 80 Fe 20 /glass. Low substrate temperatures tend to suppress both …

Final report: Ecotoxicity of PFAS-Free Fire Fighting Foams: Fish and Aquatic Invertebrate Species ER20-1518

February 27, 2026
Author(s)
Edward Wirth, Marie DeLorenzo, Peter Key, Katy Chung, David Moore, Guilherme Lotufo, John Kucklick, Katherine Peter, Jessica Reiner
The Department of Defense (DoD) is actively engaging in research to identify fluorine free foams (F3) that do not contain per- and poly-fluorinated alkyl substances (PFAS) as replacements for traditional Aqueous Film Forming Foams (AFFF) products that

Chemical emission rates from cigarette butts into air

January 18, 2020
Author(s)
Mengyan Gong, Nicholas Daniels, Dustin G. Poppendieck
… and nicotine. Ten sets of experiments were conducted at 20 °C, 25 °C or 30 °C by placing cigarette butts in a … were 1.6 to 2.2 times higher than their emission rates at 20 °C. For styrene, 2-methyl 2-cyclopenten-1-one, and … were 1.1 to 1.3 times higher than the emission rates at 20 °C, but the emission rates tended to be lower at 25 °C …

Photon-Efficient High-Dimensional Quantum Key Distribution

June 12, 2014
Author(s)
Tian Zhong, Hongchao Zhou, Ligong Wang, Gregory Wornell, Zheshen Zhang, Jeffrey Shapiro, Franco N. Wong, Rob Horansky, Varun Verma, Adriana Lita, Richard Mirin, Thomas Gerrits, Sae Woo Nam, Alessandro Restelli, Joshua Bienfang, Francesco Marsili, Matthew Shaw
… attacks - yielding up to 8.6 secure bits per photon and 6.7 Mb/s throughput, with 6.9 bits per photon after transmission through 20 km of fiber. …

Development of secondary standards for radium-223

November 5, 2009
Author(s)
Denis E. Bergeron, Brian E. Zimmerman, Jeffrey T. Cessna
… use for clinical trials give average activity readings 5.7% to 8.7% higher than the NIST calibrated activity. The … The best dial settings for the 5 mL NIST ampoule and the 20 mL dose vial geometries differed by less than 1 % for all … within the experimental uncertainty (+/- 0.76 %). For the 20 mL dose vial geometry, volume effects from 0.5 mL to 6 mL …

MACS-a new high intensity cold neutron spectrometer at NIST

January 30, 2008
Author(s)
J A Rodriguez, Daniel Adler, P C Brand, Collin L. Broholm, Jeremy Cook, Christoph Brocker, R Hammond, Z Huang, P Hundertmark, J W Lynn, N C Maliszewskyj, J Moyer, J Orndorff, Donald J. Pierce, T D Pike, G Scharfstein, S A Smee, Rodrigo Vilaseca
… spectroscopy with incident energies between 2.1 meV and 20 meV and energy resolution from 0.05 meV (Ei = 2.1 meV) to 3.0 meV (Ei = 20 meV). By using a 1428 cm2 double focusing PG (0 0 2) … intensity. The detector system will consist of an array of 20 channels which combined will subtend a solid angle of 0.2 …

Rotational deformation twins in a HfNbTaTiZr refractory high entropy alloy

September 26, 2024
Author(s)
Oleg Senkov, Frederick Meisenkothen, Robert Wheeler
… high entropy alloy during compression deformation at 20 °C – 600 °C are reported. All studied twins were formed by … (31.58°), 11 ̅6} (26.54°), 11 ̅7} (22.84°), and 11 ̅8} (20.04°). A rotational mechanism of twinning, with the …

Cross Sections for Electron Impact Excitation of the Vibrationally-Resolved A 1 [PI] Electronic State of Carbon Monoxide

October 12, 2021
Author(s)
H. Kato, H Kawahara, M Hoshino, H Tanaka, M J. Brunger, Yong Sik Kim
… of Carbon Monoxide. The energy range of this work is from 20 200 eV. We also reanalyse the A1 ( 0) manifold cross … the two sets of measurements at all common energies. From 20 200 eV the present differential cross sections are … found for all the X1 +g ( 00 = 0) ! A1 ( 0 = 0 - 7) transitions. In addition our scaled Born integral cross …

Quasi-Phase-Matched Supercontinuum Generation in Photonic Waveguides

February 1, 2018
Author(s)
Daniel D. Hickstein, Grace Kerber, David R. Carlson, Lin Chang, Daron A. Westly, Kartik A. Srinivasan, Abijith S. Kowligy, John Bowers, Scott A. Diddams, Scott B. Papp
Supercontinuum generation in on-chip waveguides is a versatile source of broadband light and the generated spectrum is determined by the phase-matching conditions. Here we show that quasi- phase-matching via periodic modulations of the waveguide structure

Use of Half Metallic Heusler Alloys in CoFeB/MgO/Heusler Alloy Tunnel Junctions

July 15, 2013
Author(s)
Andrew P. Chen, Gen G. Feng, Robert D. Shull
Heusler Alloys Co(sub2)FeSi and Co(sub2)MnSi were deposited on both single crystal MgO (100) and polycrystalline SiO(Sub2) silicon thermal oxide substrates and characterized by x-ray diffraction before and after thermal annealing at various temperatures

Integrated Broadband Lumped-Element Symmetrical-Hybrid N-way Power Dividers

June 7, 2009
Author(s)
Mike Elsbury, Paul D. Dresselhaus, Samuel P. Benz, Zoya Popovic
… symmetrical-hybrid power divider centered at 20 GHz which was designed and fabricated to uniformly … back-to-back measurement configuration with a 20 dB match bandwidth from 11.5-21.5 GHz. In the 15-22 GHz …

Compressive Prestrain in High-Niobium-Fraction Nb 3 Sn Superconductors

June 1, 2005
Author(s)
John (Jack) W. Ekin, Najib Cheggour, Mike Abrecht, Cameron C. Clickner, Michael Field, Seungok Hong, Jeffrey Parrell, Y. Zhang
… pre-strain in conductors with high niobium fractions of 20% to 30%. Values of the pre-strain, ε max in these … are typically about 10% to 15%). However, including about 20% dispersion-strengthened copper into the conductor matrix …
Displaying 526 - 550 of 2521
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