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Search Publications

NIST Authors in Bold

Displaying 1276 - 1300 of 2915

Improved Limits on Variation of the Fine Structure Constant and Violation of Local Position Invariance

May 29, 2007
Author(s)
Tara M. Fortier, Neil Ashby, James C. Bergquist, Marie Delaney, Scott A. Diddams, Thomas P. Heavner, Leo W. Hollberg, Wayne M. Itano, Steven R. Jefferts, K Kim, Windell Oskay, Thomas E. Parker, Jon H. Shirley, Jason Stalnaker, Filippo Levi, Luca Lorini
We report tests of Local Position Invariance (LPI) and constancy of fundamental constants from measurements of the frequency ratio of the 282-nm 199Hg + optical clock transition to the ground-state hyperfine splitting in 133Cs. Analysis of the frequency

X-ray Scattering and Fluorescence From Atoms and Molecules

January 1, 2000
Author(s)
S H. Southworth, L Young, E P. Kanter, Thomas W. LeBrun
Fundamental understanding of x-ray interactions with atoms and molecules provides a basis for applying x-ray methods to complex materials, such as structural determinations by x-ray diffraction and extended x-ray absorption fine structure. Compton

Understanding the U.S. National Standards System

June 1, 2002
Author(s)
K J. Johnsen
This article, intended for publication in German in Germany, clarifies attributes of the U.S.standards system and its similarities and differences with European and international counterparts. In the United States, standardization is essentially a free

SAGE: A proposal for a Space Atomic Gravity Explorer

November 15, 2019
Author(s)
Nathan Newbury, Chris Oates, Jun Ye, Guglielmo Tino, A Bassi, G Bianco, K Bongs, L Cacciapuoti, M. L. Chiofalo, X Chen, A Derevianko, W Ertme, N Gaaloul, Patrick Gill, P. W. Graham, J. M. Hogan, L Iess, Mark Kasevich, H Katori, Carsten Klempt, X Lu, Long-Sheng Ma, H Muller, A Peters, N Poli, Rasel E, G Rosi, A Roura, C Salomon, S Schiller, W Sleich, D Schlippert, F Schreck, C Schubert, Sorrentino F, Uwe Sterr, J. W. Thomsen, G Vallone, F Vetrano, P Villoresi, W von Klitzing, P Wolf, Nan Yu, M.S. Zhan
The proposed mission \Space Atomic Gravity Explorer (SAGE) has the scientifi c objective to investigate gravitational waves, dark matter, and other fundamental aspects of gravity as well as the connection between gravitational physics and quantum physics

Metrology of Microstructured Waveguides for Spintronic Applications

July 30, 2010
Author(s)
SangHyun S. Lim, Atif A. Imtiaz, Dazhen Gu, Pavel Kabos, Thomas Mitchell (Mitch) Wallis
Patterned permallay films as a part of a coplanar waveguide (CPW) were fabricated, and the magnetization dynamics of such structures was investigated as fundamental building blocks for magnetic spintronic devices. Anisotropic magneto-resistance (AMR)

Quantum Computing

January 28, 2010
Author(s)
Emanuel H. Knill
Imagine a computer that can exploit quantum mechanics to solve previously intractable problems in physics, mathematics and cryptography. Such a quantum computer would revolutionize computing technology while teaching us about fundamental physics and ways

Automated interpretation of firearm mark comparison results

December 13, 2023
Author(s)
Martin Baiker-Sorensen, Ivo Alberink, Laura Granell, Leen van der Ham, Erwin J.A.T. Mattijssen, Erich Smith, Johannes A. Soons, Peter Vergeer, Xiaoyu Alan Zheng
… often encountered in casework, Glock firearms with nickel primer ammunition (Fiocchi). The system outputs an LR …

Shear Thinning Near the Critical Point of Xenon

April 17, 2008
Author(s)
Robert F. Berg, Michael R. Moldover, M Yao, G A. Zimmerli
… gravity. The viscometer measured the drag on delicate nickel screen as it was driven through the xenon at …

Multiparameter Equations of State for Selected Siloxanes

April 25, 2006
Author(s)
P. Colonna, R. Nannan, A. Guardone, Eric Lemmon
The development of technical equations of state using the 12-parameter Span-Wagner functional form for four siloxanes is presented in two parts. The fluids under investigation include hexamethyldisiloxane (MM), tetradecamethylhexasiloxane (MD4M)

On the 60 mV/dec @300 K Limit for MOSFET Subthreshold Swing

April 26, 2010
Author(s)
Kin P. Cheung
The 60 mV/dec limit for subthreshold swing at 300K is generally considered a fundamental limit that cannot be defeated. The physical origin of this limit is revisited in this paper and the fact that this limit is in part determined by the density-ofstates
Displaying 1276 - 1300 of 2915
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