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Displaying 51 - 75 of 184

Self-dual quasiperiodic percolation

February 27, 2023
Author(s)
Grace Sommers, Michael Gullans, David Huse
… Df =1.91194±0.00008, significantly different from the ν = 4/3, Df = 91/48 = 1.89583... of random percolation. The critical point …

A New Microwave Synthesis Chain for the Primary Frequency Standard NIST-F1

August 29, 2005
Author(s)
Thomas P. Heavner, Steven R. Jefferts, Elizabeth A. Donley, F Levi, Thomas E. Parker
We present the design and measurements of the microwave synthesis chain presently used in NIST-F1, the laser-cooled cesium fountain primary frequency standard in operation at NIST, Boulder, CO. This system has been used in two accuracy evaluations of NIST

Nanoscale Hygromechanical Behavior of Lignin

September 22, 2018
Author(s)
Kristen M. Hess, Jason Killgore, Wil Srubar
… elastic modulus of the smooth domain decreased from 9.0 to 4.3 to 2.4 GPa as the moisture content increased from 0.024 to 9.1 to … elastic modulus of the smooth domain decreased from 9.0 to 4.3 to 2.4 GPa as the moisture content increased from 0.024 to 9.1 to …

Strain engineering a 4a*?3a charge-density-wave phase in transition-metal dichalcogenide 1T-VSe2

July 19, 2017
Author(s)
Duming Zhang, Jeonghoon Ha, Hongwoo H. Baek, Yang-Hao Chan, Donat F. Natterer, Alline Myers, Joshua D. Schumacher, William Cullen, Albert Davydov, Young Kuk, Mei-Yin Chou, Nikolai Zhitenev, Joseph A. Stroscio
We report a new charge density wave (CDW) structure in strained 1T-VSe2 thin films synthesized by molecular beam epitaxy. The CDW structure is unconventional and exhibits a rectangular 4a×√3a periodicity, as opposed to the previously reported hexagonal 4a

CYCLE_D: NIST Vapor Compression Cycle Design Program, Version 5.1.1; Users Guide

March 9, 2017
Author(s)
Piotr A. Domanski, J S. Brown, Eric W. Lemmon
The CYCLE_D package simulates vapor compression refrigeration cycles that use pure refrigerants or blends of refrigerants. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat

Analysis of the 5d 5 - 5d 4 6p Transition Arrays of Four Times Ionized Iridium (Ir V)

August 1, 1999
Author(s)
R R. Gayasov, Y N. Joshi, A J. Raassen, V Kaufman
… spark and a sliding spark. The analysis of the 5d 5 5d 4 6p and the 5d 4 6s 5d 4 6p transition arrays of Ir V was carried out for … time. On the basis of 1353 lines in the region 500 2100 , 91 out of 99 levels of the 5d 5 + 5d 4 6s even parity system … Analysis of the 5d 5 - 5d 4 6p Transition Arrays of Four Times Ionized Iridium (Ir V) …

Universal Geometric Frustration in Pyrochlores

July 5, 2018
Author(s)
Benjamin A Trump, Syed M. Koohpayeh, Ken J. T. Livi, JiaJia Wen, Kathyrn Arpino, Quentin M. Ramasse, Rik Brydson, Mikhail Feygenson, H. Takeda, M. Takigawa, K. Kimura, S. Nakatsuji, Collin L. Broholm, T. M. McQueen
… scanning transmission electron microscopy and 91 Zr NQR indicate that this disorder is static and of order …

Rearrangement of Perfluorocyclobutyne

November 1, 1999
Author(s)
K B. Wiberg, M Marquez, Carlos A. Gonzalez
The energies of cyclobutyne, perfluorocyclobutyne and related compounds have been calculated at levels from MP2/6-31G* through QCISD(T)/6-311+G*, and also at B3LYP and B3PW91/6-311+G*. The relative energies found with the larger basis sets are quite
Displaying 51 - 75 of 184
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