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Search Publications

NIST Authors in Bold

Displaying 901 - 925 of 4258

Cation Diffusion at the Polymer Coating/Metal Interface.

January 1, 1995
Author(s)
Tinh Nguyen, Z Zhang, C Lin, J M. Pommersheim
Theoretical and experimental studies were carried out on the transport of cations in the channel between a polymer coating and a metal substrate from a defect in the absence of an applied electrical potential. The model consists of two stages: an initial

On the Determination of Carbon by PGAA

November 10, 2013
Author(s)
Rolf L. Zeisler, Rick L. Paul, Jeffrey A. Fagan, Zsolt R?vay, Stefan S?llradl
… carbon nanotube, buckypaper, FRM II …

Effect of Cluster Ion Analysis Fluence on Interface Quality in SIMS Molecular Depth Profiling

November 10, 2009
Author(s)
Christopher Szakal, Steven Hues, J Greg Gillen, Joe Bennett
… Cluster ion beams are being routinely utilized in secondary ion mass spectrometry (SIMS) for molecular depth profiling … as soft organic matrices, often require large analysis ion fluences in order to generate sufficient count rates for … Effect of Cluster Ion Analysis Fluence on Interface Quality in SIMS Molecular …

Observation of the 1 S 0 - 3 P 0 clock transition in 27 Al +

June 1, 2007
Author(s)
Till P. Rosenband, P. O. Schmidt, David Hume, Wayne M. Itano, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, Jeroen Koelemeij, James C. Bergquist, David J. Wineland
… 0 – 3 P 0 clock transition in 27 Al + . A single aluminum ion and a single beryllium ion are simultaneously confined in a linear Paul trap, … Coulomb repulsion. This coupling allows the beryllium ion to sympathetically cool the aluminum ion, and also …

Chemical and Physical Changes During Seawater Flow through Intact Dunite Cores: An Experimental study at 150-200 degC

October 1, 2017
Author(s)
Andrew J. Luhmann, Benjamin M. Tutolo, Brian C. Bagley, David F. Mildner, Peter P. Scheuermann, Joshua M. Feinberg, Konstantin Ignatyev, Jr. Seyfried
… the hydrogen was largely generated by the oxidation of iron as olivine was converted to ferric iron (Fe(III)) serpentine. SEM images suggested secondary … in nature, while also oxidizing more ferrous Fe (Fe(II)) iron and cumulatively generating more hydrogen than …

Lateral Magnetically Modulated Multilayers by Combining Ion Implantation and Lithography

March 1, 2017
Author(s)
Enric Menendez, Hiwa Modarresi, Claire Petermann, Josep Nogues, Neus Domingo, Haoliang Liu, Brian Kirby, Amir Syed Mohd, Zahir Salhi, Earl Babcock, Stefan Mattauch, Chris Van Haesendonck, Andre Vantomme, Kristiaan Temst
… The combination of lithography and ion implantation is demonstrated to be a suitable method to … and Co-CoO (2.4υm-wide) lines has been obtained by oxygen ion implantation into a lithographically-masked Au-sandwiched … Lateral Magnetically Modulated Multilayers by Combining Ion Implantation and Lithography …

Frequency-comb spectroscopy on pure quantum states of a single molecular ion

March 27, 2020
Author(s)
Chin-wen Chou, Alejandra L. Collopy, Christoph Kurz, Yiheng Lin, Michael E. Harding, Philipp N. Plessow, Tara M. Fortier, Scott A. Diddams, Dietrich G. Leibfried, David R. Leibrandt
… techniques to prepare a single trapped molecular ion in a pure quantum state, drive terahertz rotational … spectroscopy on pure quantum states of a single molecular ion …

Detection and Speciation of Brominated Flame Retardants in High-Impact Polystyrene (HIPS) Polymers

March 27, 2012
Author(s)
Richard D. Holbrook, Jeffrey M. Davis, Keana C. Scott, Christopher W. Szakal
… micro X-ray Fluorescence Spectroscopy (µXRF), Focused Ion Beam Scanning Electron Microscopy (FIB SEM) combined with … X-ray Spectroscopy (EDS), and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS), are promising techniques … "Brominated Flame Retardants", "Focused Ion Beam Scanning Electron Microscopy", "Secondary Ion Mass …

High Resolution Atomic Spectroscopy of Laser-Cooled Ions

January 1, 1991
Author(s)
David J. Wineland, James C. Bergquist, John J. Bollinger, Wayne M. Itano, F L. Moore, J M. Gilligan, M G. Raizen, C S. Weimer, C H. Manney
… Enrico Fermi Summer School Laser Manipulation of Atoms and Ions August 1991 Pages … High Resolution Atomic Spectroscopy of Laser-Cooled Ions …

Photodynamics of [FeFe]-Hydrogenase Model Compounds with Bidentate Heterocyclic Ligands

July 23, 2019
Author(s)
Wyatt Thornley, Sarah Wirick, Maximilian Riedel-Topper, Nathan J. DeYonker, Thomas E. Bitterwolf, Christopher J. Stromberg, Edwin J. Heilweil
… and photoproducts compared to more common symmetric di-iron species. The bidentate-ligand containing compounds … Di-iron hydrogenase models, density functional theory, matrix …

Quantum interference between photons from an atomic ensemble and a remote atomic ion

November 18, 2019
Author(s)
A. Craddock, J. Hannegan, D. Ornelas-Huerta, J. Siverns, A. Hachtel, E. Goldschmidt, James V. Porto, Q. Quraishi, S. Rolston
… interference between photons generated from a single ion and an atomic ensemble. The photons are produced on … Given these results, we analyze the feasibility of hybrid ion-ensemble remote entanglement generation. … photons from an atomic ensemble and a remote atomic ion …

Effects of Metal Ligation and Oxygen on the Reversibility of the Thermal Denaturation of Pseudomonas Aeruginosa Azurin

January 22, 2002
Author(s)
A Sandberg, J Leckner, Y. Shi, Frederick P. Schwarz, B G. Karlsson
… dissolved O 2 at high temperatures. Both Cu(I)- and Zn(II)-coordinating wild-type azurin therefore unfold reversibly in anaerobic solutions, as well as the Zn(II)-coordinating disulfide-deficient C3A/C26A mutant. … nearly perfect two-state transitions. Unfolding of Cu(II)-coordinating azurin is, on the other hand, always …

Ratio of the Al + and Hg + Optical Clock Frequencies to 17 Decimal Places

August 25, 2008
Author(s)
Wayne M. Itano, Till P. Rosenband, David Hume, P.O. Schmidt, Chin-Wen Chou, A. Brusch, Luca Lorini, Windell Oskay, Robert E. Drullinger, Sarah Bickman, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, William C. Swann, Nathan R. Newbury, David J. Wineland, James C. Bergquist
… for state preparation and detection. Coupling with a Be + ion, trapped simultaneously with the Al + ion, enables state manipulation, detection, and cooling of the Al + ion. Both standards have achieved absolute reproducibilities … atomic clocks, frequency standards, fundamental constants, ion traps, mercury, optical frequency standards …

Microscopic Insights into Ion Gel Dynamics using Neutron Spectroscopy

August 1, 2012
Author(s)
Maiko Kofu, Takenori Someya, Soichi Tatsumi, Kazuhide Ueno, Takeshi Ueki, Masayoshi Watanabe, Takuro Matsunaga, Mitsuhiro Shibayama, Victoria Garcia Sakai, Madhu Sudan Tyagi, Osamu Yamamuro
… We have investigated the microscopic dynamics of ion gels consisting of a PMMA [poly(methyl methacrylate)] … by means of quasi-elastic neutron scattering (QENS). These ion gels interestingly exhibit two glass transitions (T g S) … Microscopic Insights into Ion Gel Dynamics using Neutron Spectroscopy …
Displaying 901 - 925 of 4258
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