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Search Publications

NIST Authors in Bold

Displaying 626 - 650 of 2538

Quantum amplification of motion of a mechanical oscillator

June 21, 2019
Author(s)
Shaun C. Burd, Raghavendra Srinivas, John J. Bollinger, Andrew C. Wilson, David J. Wineland, Dietrich G. Leibfried, Daniel H. Slichter, David T. Allcock
… quantum noise. We implement this protocol with a trapped-ion mechanical oscillator and measure metrological … Quantum metrology, squeezing, trapped ion …

Role of Nanoparticle Size and Surface Chemistry on Ion Transport and Nanostructure of Perfluorosulfonic Acid Ionomer Nanocomposites

March 7, 2022
Author(s)
Allison Domhoff, Tyler Martin, Eric Davis
… have emerged as a promising solution to the low ion selectivity of ionomer membranes utilized in flow … dispersion state and the resulting morphology and vanadium ion permeability of the composite membranes. Specifically, … Most notably, an approximately 80 % reduction in vanadium ion permeability is observed for ionomer membranes containing …

Analysis of the Free Ion Nd 3+ Spectrum (Nd IV)

October 12, 2021
Author(s)
J-F Wyart, Ali Meftah, Wan-U Lydia Tchang-Brillet, Norbert Champion, O Lamrous, Nissan Spector, J Sugar
… emission spectrum, energy levels, free-ion, parametric fits, triply ionized, wavelengths … Analysis of the Free Ion Nd 3+ Spectrum (Nd IV) …

Spectrum and Energy Levels of the Nd 4+ Free Ion (Nd V)

October 12, 2021
Author(s)
Ali Meftah, J-F Wyart, Jocelyne Sinzelle, Wan-U Lydia Tchang-Brillet, Norbert Champion, Nissan Spector, J Sugar
… emission spectrum, energy levels, fits, free-ion, parametric, triply ionized, wavelengths … Spectrum and Energy Levels of the Nd 4+ Free Ion (Nd V) …

Investigation of the Charge Compensation Mechanism on the Electrochemically Li-Ion Deintercalated Li 1-x Co 1/3 Ni 1/ 3MN 1/3 O 2 Electrode System by Combination of Soft and Hard X-Ray Absorption Spectroscopy

January 11, 2005
Author(s)
W S. Yoon, Kyung Y. Chung, Xiao-Qing Yang, James McBreen, Mahalingam Balasubramanian, C P. Grey, Daniel A. Fischer
… the major charge compensation at the metal site during Li-ion deintercalation is achieved by the oxidation of Ni2+ … that large portion of the charge compensation during Li-ion deintercalation is achieved in the oxygen site. By … Charge Compensation Mechanism on the Electrochemically Li-Ion Deintercalated Li 1-x Co 1/3 Ni 1/ 3MN 1/3 O 2 Electrode …

Relativistic all-order many-body calculation of energies, wavelengths, and M1 and E2 transition rates for the 3d^n configurations in tungsten ions

January 3, 2018
Author(s)
M S. Safronova, U I. Safronova, S. G. Porsev, M G. Kozlov, Yuri Ralchenko
… the low-lying states are evaluated for W51+ to W54+ ions with 3dn (n = 2 to 5) electronic con gurations using an … are discussed. This rst study of such highly charged ions with the present method opens the way for future … of properties for a very wide range of highly charged ions aimed at providing precision benchmarks for various …

Quantifying and Suppressing Proton Intercalation to Enable High-Voltage Zn-Ion Batteries

November 4, 2021
Author(s)
Fei Wang, Lauren E. Blanc, Qin Li, Antonio Faraone, Xiao Ji, Huaiyu H. Chen-Mayer, Rick L. Paul, Joseph Dura, Enyuan Hu, Kang Xu, Linda F. Nazar, Chunsheng Wang
… We explore the Zn-ion intercalation mechanisms/interfacial dynamics of VPO 4 F … both a high voltage (1.9 V) and long-lasting aqueous zinc-ion battery: Zn|Zn(OTf) 2 ·nH 2 O-PC|Zn x VPO 4 F. … Suppressing Proton Intercalation to Enable High-Voltage Zn-Ion Batteries …

Ne-22 Ion-Beam Radiation Damage to DNA: From Initial Free Radical Formation to Resulting DNA-Base Damage

June 14, 2021
Author(s)
Melis Kant, Pawel Jaruga, Erdem Coskun, Samuel Ward, Alexander Stark, Thomas Baumann, David Becker, Amitava Adhikary, Michael Sevilla, Miral M. Dizdar
… processes and the products of DNA damage involved in Ne-22 ion-beam radiation of hydrated (12±3 H2O/nucleotide) salmon … showed that, as the linear energy transfer (LET) of the ion-beam radiation increases along the beam track, the … Bragg peak is reached. Yields of DNA products along the ion-beam track were in excellent agree-ment with the radical …

Li+ transport in single-ion conducting side-chain polymer electrolytes with nanoscale self-assembly of ordered ionic domains

August 22, 2022
Author(s)
Jiacheng Liu, Lingyu Yang, Phillip Pickett, Bumjun Park, Jennifer Schaefer
… Li-ion batteries based on organic liquid electrolytes have been … that is solvating the lithium cation. Recently, metal-ion containing polymers with regulated, repeating chain architecture have drawn attention as ion conductors due to their ionic domain segregation. In this …

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 …

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 …

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 …

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 …
Displaying 626 - 650 of 2538
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