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Search Publications

NIST Authors in Bold

Displaying 1076 - 1100 of 3757

Optical-to-microwave frequency comparison with fractional uncertainty of 10 -15

October 1, 2007
Author(s)
Jason Stalnaker, Scott A. Diddams, Tara M. Fortier, K Kim, Leo W. Hollberg, James C. Bergquist, Wayne M. Itano, Marie Delaney, Luca Lorini, Windell Oskay, Thomas P. Heavner, Steven R. Jefferts, Filippo Levi, Thomas E. Parker, Jon H. Shirley
… of the optical frequency of the mercury single-ion frequency standard in terms of the SI second as realized … have resulted in a determination of the mercury single-ion frequency with a fractional uncertainty less than $7 … context of the previous measurements of the mercury single-ion frequency and arrive at a final determination of the …

In Situ Neutron Techniques for Studying Lithium Ion Batteries

May 1, 2012
Author(s)
Howard Wang, Robert Gregory Downing, Joseph Dura, Daniel S. Hussey
… We review in situ neutron techniques for studying lithium ion batteries. Four neutron measurement techniques, neutron … In Situ Neutron Techniques for Studying Lithium Ion Batteries …

Physics of DNA Threading Through a Nanometer Pore and Applications to Simultaneous Multianalyte Sensing

January 1, 2002
Author(s)
John J. Kasianowicz, S. E. Henrickson, Martin Misakian, H H. Weetall, B Robertson, Vincent M. Stanford
… to partition into and thread through single protein ion channels. It was recently shown in our laboratory that … can be used to probe the geometric properties of an ion channel, and that the interaction between the … analyte detection, ion channel, nanopore, protein pore, sensor …

Methanol, Ethanol, and Hydrogen Sensing using Metal-Oxide and Metal (TiO subscript 2-Pt) Composite Nanoclusters on GaN Nanowires: A New Route towards Tailoring the Selectivity of Nanowire-Nanocluster based Chemical Sensors.

May 12, 2012
Author(s)
Geetha G. Aluri, Abhishek Motayed, Albert Davydov, Vladimir Oleshko, Kristine A. Bertness, Norman Sanford, Mulpuri V. Rao
… only to alcohols (methanol and ethanol in specific) and to hydrogen, and not to any other chemicals. All these hybrid … 100 sec. The GaN/(TiO-Pt) NWNC sensors were able to detect hydrogen concentrations from 1 ppm to 1% in nitrogen in less than 60 s. The detection limits for hydrogen is not our sensor's limitation but the measurement …

Single-Ion Properties of the S eff = 1/2 XY Antiferromagnetic Pyrochlores NaA'Co 2 F 7 (A' = Ca 2+ , Sr 2+ )

April 13, 2017
Author(s)
K. A. Ross, J. M. Brown, R. J. Cava, J. W. Krizan, S. E. Nagler, Jose Rodriguez Rivera, M. B. Stone
… correlations as NaCaCo 2 F 7 . We than present the single-ion levels of Co 2+ in these materials as measured by … fields accounts for the observed transitions. The single-ion ground state of Co 2+ is a Kramers doublet with a … model that reproduces the salient features of the single-ion spectrum produces approximately 8.4% and 4.1% variation …

Realization of quantum error correction

December 2, 2004
Author(s)
J Chiaverini, Dietrich G. Leibfried, Tobias Schaetz, Murray D. Barrett, Brad R. Blakestad, Joseph W. Britton, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R Ozeri, David J. Wineland
… quantum error correction using three beryllium atomic-ion qubits confined to a linear , multi-zone trap. One … that has no classical analog. In the experiment, a primary ion qubit is prepared in an initial state, which is then … various rates. The logical state is decoded to the primary ion qubit, making error information available on the ancilla …

An Iodide-Based Li 7 P 2 S 8 I Superionic Conductor

February 3, 2015
Author(s)
Ezhiylmurugan Rangasamy, Zengcai Liu, Mallory Gobet, Kartik Pilar, Gayatri Sahu, Wei Zhou, Hui Wu, Steve Greenbaum, Chengdu Liang
… A Li 7 P 2 S 8 I solid state Li-ion conductor derived from β-Li 3 PS 4 and LiI demonstrates … superionic conductor, Li3PS4, Li7P2S8I, Li ion battery …

Negative Cooperativity upon Hydrogen Bond-Stabilized O 2 Adsorption in a Redox-Active Metal-Organic Framework

June 18, 2020
Author(s)
Julia Oktawiec, Henry Z. H. Jiang, Jenny G. Vitillo, Douglas A. Reed, Lucy E. Darago, Benjamin Trump, Varinia Bernales, Harriet Li, Kristen A. Colwell, Hiroyasu Furukawa, Craig Brown, Laura Gagliardi, Jeffrey R. Long
… adsorption of O 2 . In particular, moderate-strength hydrogen bonding stabilizes a cobalt(III)-superoxo species … Negative Cooperativity upon Hydrogen Bond-Stabilized O 2 Adsorption in a Redox-Active …

Experimental speedup of quantum dynamics through squeezing

April 17, 2024
Author(s)
Shaun Burd, Hannah Knaack, Raghavendra Srinivas, Christian Arenz, Alejandra Collopy, Laurent Stephenson, Andrew C. Wilson, David Wineland, Dietrich Leibfried, John J. Bollinger, David Allcock, Daniel Slichter
… motional and spin states of a single trapped $^25}$Mg$^+}$ ion, the scheme applies generally to Hamiltonians involving … trapped ion, squeezing, quantum amplification …

Stability of a Penning trap with a quadrupole rotating electric field

February 11, 2005
Author(s)
T Hasegawa, M J. Jensen, John Bollinger
… rotating electric field. The rotation frequency of an ion cloud in a Penning trap determines the cloud density and … center-of -mass stability, combined ion trap, laser cooling, non-neutral plasmas, Penning trap, …

Phase space study of surface electrode Paul traps: Integrable, chaotic, and mixed Motion

May 31, 2018
Author(s)
V. Roberdel, Dietrich Leibfried, D. Ullmo, H. Landa
… the details of integrable and chaotic motion of a single ion. We introduce appropriate phase space measures and give a … that we develop gives a general framework for describing ion dynamics in a broad variety of surface Paul traps. For … chaotic motion, ion trap, phase space, regular motion, stability …

Cryogenic Transfer Line Chilldown

June 1, 2004
Author(s)
N T. Van Dresar, James D. Siegwarth
… high flowrates, the maximum comsumption model overpredicts hydrogen consumption and underpredicts nitrogen consumption. … chilldown, cryogenic, liquid hydrogen, liquid nitrogen, transfer line …
Displaying 1076 - 1100 of 3757
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