U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 1251 - 1275 of 3757

Fluorescence during Doppler cooling of a single trapped atom

November 26, 2007
Author(s)
Janus Wesenberg, Dietrich G. Leibfried, Brad R. Blakestad, Joseph W. Britton, Ryan Epstein, Jonathan Home, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R. Ozeri, Signe Seidelin, David J. Wineland
… effect of RF micromotion, relevant for a trapped atomic ion, and coupling between the vibrational modes on cooling …

Combining Microscopic and Macroscopic Probes to Untangle the Single-Ion Anisotropy and Exchange Energies in an S = 1 Quantum Antiferromagnet

April 20, 2017
Author(s)
Jamie Brambleby, Jamie Lee Manson, Paul A. Goddard, Matthew B. Stone, Roger D. Johnson, Pascal Manuel, Jacquelina A. Villa, Craig Brown, Helen Lu, Shalinee Chikara, Vivien Zapf, Saul H. Lapidus, Rebecca Scatena, Piero Macchi, Yu-Sheng Chen, Lai-Chin Wu, John Singleton
… (υ 0 less than or equal to}10 T) allow the single-ion anisotropy energy D and the Heisenberg J and J' … total spin population of ca. 1.75e residing on the Ni(II) ion while remaining 0.25e is delocalized over both ligand … Microscopic and Macroscopic Probes to Untangle the Single-Ion Anisotropy and Exchange Energies in an S = 1 Quantum …

Optical atomic clocks

February 9, 2015
Author(s)
Andrew D. Ludlow, Martin M. Boyd, Jun Ye, E. Peik, P. O. Schmidt
… clock, optical lattice, precision spectroscopy, trapped ion …

NMR Evidence for an Unusually Low N1 pK a for Uracil Bound to Uracil DNA Glycosylase: Implications for Catalysis

March 1, 2000
Author(s)
A C. Drohat, J T. Stivers
… activates the uracil-leaving group by providing a short hydrogen bond from a neutral His187 to the developing … at neutral pH that has been unambiguously assigned to this hydrogen bond. This type of catalysis, involving a neutral … catalysis, E coli uracil DNA glycosylase, hydrogen bond, leaving group activation, nuclear magnetic …

Sodium Superionic Conduction in Na 2 B 12 H 12

April 11, 2014
Author(s)
Terrence J. Udovic, Matoaki Matsuo, Atsushi Unemoto, Kristina Verdal, Vitalie Stavila, Alexander V. Skripov, John J. Rush, Hitoshi Takamura, Shin-Ichi Orimo
… battery technologies has prompted the search for new Na-ion-based electrolyte materials. One such material, Na 2 B 12 … i.e., lower phase-transition temperatures and higher ion conduction, can be realized, eg.g., via modification or … complex hydride, conductivity, impedance measurement, ion conductivity, Na cation, sodium, superionicity …

Kinetic Trapping of D 2 in MIL-53(AL) Observed using Neutron Scattering

July 14, 2014
Author(s)
Rachel Ann Pollock, Jae-Hyuk Her, Craig Brown, Yun Liu, Anne Dailly
… K, where the D 2 eventually desorbs under dynamic vacuum. Hydrogen diffusion constants calculated using quasielastic … MIL-53, neutron powder diffraction, hydrogen storage, quasielastic neutron scattering, …

Conductance Hysteresis in the Voltage-Dependent Anion Channel

September 1, 2015
Author(s)
Shay M. Rappaport, Oscar Teijido, David Hoogerheide, Tatiana K. Rostovtseva, Alexander M. Berezhkovskii, Sergey M. Bezrukov
… In contrast to the voltage gating of ion-selective channels of electrophysiology, the mechanisms … hysteresis, ion channels, electrophysiology, VDAC …

Charge-state dependent ion condensation near conjugated polymer backbones

November 15, 2025
Author(s)
Dilara Meli, Quentin Thomas, Guillaume Freychet, Lucas Flagg, Iain McCulloch, David Beljonne, Lee Richter, Jonathan Rivnay
… this implies that in addition to band-filling, this ion-type dependent phenomenon contributes to decreased hole … Charge-state dependent ion condensation near conjugated polymer backbones …

Minimizing damage during FIB-TEM sample preparation of soft materials

November 17, 2011
Author(s)
Nabil Bassim, Bradley De Gregorio, A. D. Kilcoyne, Keana Scott, Tsngming Chou, S. Wirick, George Cody, Rhonda Stroud
… Although focused ion beam (FIB) microscopy has been used successfully for … preparation, and little effect was observed by changing ion-beam parameters. However, polyacrylamide was particularly … Focused ion beam, FIB, SEM, TEM, STXM, XANES, damage, soft materials …

Hybrid quantum systems with trapped charged particles

February 21, 2017
Author(s)
Shlomi S. Kotler, Raymond Simmonds, Dietrich Leibfried, David J. Wineland
… motion of a trapped charged particle (e.g., an ion or electron) to the quantum degrees of freedom of … that hybrid quantum systems involving a single atomic ion are unfavorable compared with the use of a single electron because the coupling rates between the ion and its counterpart are slower than the expected …

Chained Bell inequality experiment with high-efficiency measurements

March 28, 2017
Author(s)
Ting Rei Tan, Stephen D. Erickson, Peter L. Bierhorst, Daniel Kienzler, Scott C. Glancy, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland, Yong Wan
We report correlation measurements on two 9Be+ ions that violate a chained Bell inequality obeyed by any local-realistic theory. The correlations can be modeled as derived from a mixture of a local-realistic probabilistic distribution and a distribution

Self-terminating electrodeposition of ultrathin Pt films on Ni: An active, low-cost electrode for H2 production

June 14, 2014
Author(s)
Yihua Y. Liu, Carlos M. Hangarter, Thomas P. Moffat
… as determined by X-ray photoelectron spectroscopy (XPS). Ion scattering spectroscopy (ISS) indicated that Pt covered … was mediated by formation of a layer of adsorbed hydrogen (Hupd) on the Pt-Ni surface. Multi-cycle Pt … a Pt terminated surface. The electrocatalytic activity for hydrogen production in alkaline media was significantly …

Long-Lived Qubit Memory Using Atomic Ions

August 5, 2005
Author(s)
C. Langer, R Ozeri, John D. Jost, J Chiaverini, B. L. DeMarco, A. Ben-Kish, Brad R. Blakestad, Joseph W. Britton, David Hume, Wayne M. Itano, Dietrich G. Leibfried, Rainer Reichle, Till P. Rosenband, Tobias Schaetz, Piet Schmidt, David J. Wineland
… quantum superpositions, quantum-state engineering, trapped ions … Long-Lived Qubit Memory Using Atomic Ions …

Randomized Benchmarking of Quantum Gates

January 1, 2007
Author(s)
Emanuel Knill, D. Leibfried, R. Reichle, J. Britton, R. B. Blakestad, J. D. Jost, C. Langer, R Ozeri, Signe Seidelin, David J. Wineland
… We implemented randomized benchmarking on trapped atomic ion qubits, establishing a one-qubit error probability per … ion traps, quantum computing, quantum errors., quantum gates …

Cross Sections for Ionization of Mo and Mo+ by Electron Impact

October 12, 2021
Author(s)
D H. Kwon, Y J. Rhee, Yong Sik Kim
… electron-impact ionization of the neutral Mo Atom and Mo+ ion are reported. Both Mo and Mo+ have many metastable levels … electron impact ionization, molybdenum, molybdenum ion …
Displaying 1251 - 1275 of 3757
Was this page helpful?