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NIST Authors in Bold

Displaying 976 - 1000 of 3757

Temperature-Controlled Depth Profiling in Polymeric Biomaterials Using Cluster Secondary Ion Mass Spectrometry

July 1, 2006
Author(s)
Christine M. Mahoney, Albert J. Fahey, John G. Gillen, Chang Xu, J Batteas
… Secondary Ion Mass Spectrometry (SIMS) employing an SF5+ polyatomic primary ion source was used to depth profile through various … rates, damage cross sections, and overall secondary ion stability) were monitored as a function of temperature. … in Polymeric Biomaterials Using Cluster Secondary Ion Mass Spectrometry …

Enhanced Water Splitting Performance of Potassium-Adsorbed Titania Nanotube Arrays

December 7, 2009
Author(s)
Christiaan Richter, Cherno Jaye, Eugen Panaitescu, Daniel A. Fischer, Laura H. Lewis, Ronald J. Willey, Latika Menon
… of the external electrical bias needed to produce hydrogen at maximum efficiency. This result implies that the … electrical energy input required per liter of solar hydrogen produced with potassium-adsorbed titania nanotubes … potassium-free nanotubes to produce the same amount of hydrogen. Tailoring the potassium content may thus be an …

Microwave-Based Structure and Four-Simensional Morphed Intermolecular Potential for HI-CO 2

October 12, 2021
Author(s)
Wolfgang Jabs, Fabrice Willaert, Blake McElmurry, Luis Rivera-Rivera, Raffaele Montuoro, R R. Lucchese, J W. Bevan, R D. Suenram
… by a planar quasi T-shaped structure with the hydrogen atom tilted toward the CO2 moiety, separated by a … cm-1 with a planar quasi T-shaped structurewith the hydrogen atom tilted away from the CO2 moiety. The ground … carbon dioxide, hydrogen iodide, intermolecular forces, microwave …

Effect of Step Density and Orientation on the Apparent pH Dependence of Hydrogen and Hydroxide Adsorption on Stepped Platinum Surfaces

July 3, 2018
Author(s)
Ian McCrum, Xiaoting Chen, Kathleen Schwarz, Michael Janik, Marc Koper
… reactions in which surface-bonded intermediates (hydrogen and hydroxyl) play a crucial role, especially for fuel cells and hydrogen production. Here, with the support of a combination … Density and Orientation on the Apparent pH Dependence of Hydrogen and Hydroxide Adsorption on Stepped Platinum Surfaces …

Quantum interface between an electrical circuit and a single atom

March 30, 2012
Author(s)
Jacob M. Taylor, Dvir Kafri, David Kielpinski, G J. Milburn, M J. Woolley
… devices using the coupling between the motion of a single ion and the quantised electric field of the circuit. … coupling between the internal states of a single atomic ion and the electrical excitations of a superconducting … Ion traps, superconducting resonator, bulk acoustic waves …

Dataset from HDX-MS Studies of IgG1 Glycoforms and Their Interactions with the FcgR1a (CD64) Receptor

June 17, 2021
Author(s)
Kyle Anderson, Kerry Scott, Ioannis Karageorgos, Elyssia Gallagher, Venkata Tayi, Michael Butler, Jeffrey W. Hudgens
… This database gives hydrogen-deuterium exchange mass spectrometry (HDX-MS) data … runs of six exchange times. The data illuminate on the hydrogen exchange dynamics in isolated receptor, isolated … antibody-receptor interaction, chromatography, hydrogen-deuterium exchange, glycosylation, mass …

Nanointerface-Driven Reversible Hydrogen Storage in the Nanoconfined Li-N-H System

January 20, 2017
Author(s)
Brandon C. Wood, Vitalie Stavila, Natchapol Poonyayant, Tae-Wook Heo, Keith G. Ray, Leonard E. Klebanoff, Terrence J. Udovic, Jonathan R. I. Lee, Natee Angboonpong, Joshua D. Sugar, Pasit Pakawatpanurut
… hydrogen storage, interfaces, lithium amide, lithium hydride, … Nanointerface-Driven Reversible Hydrogen Storage in the Nanoconfined Li-N-H System …

Solution Structures of Bacillus Anthracis Protective Antigen Proteins using Small Angle Neutron Scattering and Protective Antigen 63 Ion Channel Formation Kinetics

December 11, 2021
Author(s)
Ariel Michelman-Ribeiro, Kenneth A. Rubinson, Vitalii Silin, John J. Kasianowicz
… are studying the structures of bacterial toxins that form ion channels and catalyze macromolecule transport across … alpha-hemolysin, anthrax, Bacillus anthracis, β-barrel, ion channel, pore forming toxin, PA63, PA83 … Small Angle Neutron Scattering and Protective Antigen 63 Ion Channel Formation Kinetics …

Electrospray Tandem Quadrupole Fragmentation of Quinolone Drugs and Related Ions. On the Reversibility of Water Loss from Protonated Molecules

November 30, 2010
Author(s)
Pedatsur Neta, Bhaskar Godugu, Yuxue Liang, Yamil Simon, Xiaoyu Yang, Stephen E. Stein
… The authors suggested formation of two singly protonated ions with different behavior, one undergoing loss of H 2 O … cone voltage as well. We further find that many fragment ions formed by loss of H 2 O can attach a water molecule in the collision cell, whereas ions formed by loss of CO 2 do not. Since re-attachment of H …

Fundamental constants and tests of theory in Rydberg states of one-electron ions

March 19, 2010
Author(s)
Ulrich D. Jentschura, Peter Mohr, Joseph N. Tan
… of the theory of circular Rydberg states of hydrogenlike ions allows highly-accurate predictions to be made for energy … can be increased by utilizing a variety of combinations of ions and Ryberg states to determine fundamental constants and … and tests of theory in Rydberg states of one-electron ions …

Filtering noise with a quantum probe

May 5, 2011
Author(s)
John J. Bollinger
… in general terms the ideas behind the manuscript "Single-ion quantum lock-in amplifier" by Kotler and colleagues which … of the valence electron spin of a single trapped strontium ion. … dynamical decoupling, ion trap, lock-in detection, quantum metrology, quantum …

Structural and Reorientational Dynamics of Tetrahydroborate (BH 4 -) and Tetrahydrofuran (THF) in a Mg(BH 4 ) 2 &#82263THF Adduct: Neutron-Scattering Characterization

January 7, 2020
Author(s)
Mirjana NMN Dimitrievska, Marina Chong, Mark E. Bowden, Hui Wu, Wei Zhou, Iffat Nayyar, Bojana Ginovska, Thomas Gennett, Tom Autrey, Craig M. Jensen, Terrence J. Udovic
… borohydrides are considered as promising materials for hydrogen storage applications due to their high volumetric and gravimetric hydrogen densities. Recently, different solvents have been … reducing the concentration of an unwanted impurity in the hydrogen and (ii) disrupting the stability of crystalline …

Entropic modulation of divalent cation transport

September 22, 2025
Author(s)
Yechan Noh, Demian Riccardi, Alexander Smolyanitsky
… enthalpic contributions from transiently decreased ion-solvent and increased ion-pore electrostatic interactions. This commonly accepted … ion transport, thermodynamics, entropy, enthalpy, theory, …

Adjustments to the NIST Realization of the ITS-90 from 5 K to 24.5561 K

May 1, 2008
Author(s)
Weston L. Tew, Christopher W. Meyer
… Thermometry (CCT) for the definitions of the equilibrium hydrogen (e-H2) triple points (TPs) and vapor-pressure points … e-H2 TP and VPs which were performed using highly-depleted hydrogen gas. The revised CCT definitions for all e-H2 fixed … Temperature, ITS-90, hydrogen fixed points, gas thermometry, isotopic composition, …

Temperature-Induced Structural Changes in Putidaredoxin: A Circular Dichroism and UV-VIS Absorption Study

June 1, 2004
Author(s)
Vytautas Reipa, Marcia J. Holden, M P. Mayhew, V L. Vilker
… 16.3 C transition is attributed to the disruption of the hydrogen bonding between the active center bridging sulfur … entropy. There is evidence to suggest that disrupting hydrogen bonding between iron ligating cysteines 45, 39 and … circular dichroism, formal potential, hydrogen bonding, iron-surfur proteins, Putidaredoxin, UV-VIS …

Visible, EUV, and X-Ray Spectroscopy at the NIST EBIT Facility

April 24, 2004
Author(s)
John D. Gillaspy, B Blagojevic, Paul A. Dalgarno, K Fahey, V Kharchenko, J M. Laming, L Logosi, E-O Le Bigot, K Makonyi, L P. Ratliff, E Silver, H. Schnopper, E Takacs, J N. Tan, H Tawara, K Tokesi
… astrophysics, charge exchange, electron beam ion trap, EUV lithography, exreme ultraviolet, fusion, highly …

Glassy Carbon, NIST Standard Reference Material (SRM 3600): Hydrogen Content, Neutron Vibrational Density of States and Heat Capacity

October 1, 2018
Author(s)
Ronald L. Cappelletti, Terrence J. Udovic, Hui Li, Rick L. Paul
… on the heat treatment of the samples, which affects the hydrogen content. Samples heat-treated at high temperatures contain little hydrogen and their spectra closely resemble that of graphite. … Glassy Carbon, NIST Standard Reference Material (SRM 3600): Hydrogen Content, Neutron Vibrational Density of States and …

Characterization of Drug-Eluting Stent (DES) Materials With Cluster Secondary Ion Mass Spectrometry (SIMS)

July 1, 2006
Author(s)
Christine M. Mahoney, Martin McDermott
… Secondary Ion Mass Spectrometry (SIMS) employing an SF5+ polyatomic primary ion source was utilized to analyze several materials commonly … molecular signal as a function of increasing SF5+ primary ion dose when experiments were performed at cryogenic … Drug-Eluting Stent (DES) Materials With Cluster Secondary Ion Mass Spectrometry (SIMS) …

Effect of Resin Composition on the Remineralizing Ability of Amorphous Calcium Phosphate-Based Polymeric Composites

May 15, 2000
Author(s)
Drago Skrtic, Joseph M. Antonucci, E D. Eanes
… as the Gibbs free energy, DGo. Elevated Ca2+ and PO4 ion concentrations were sustained in all BTHZ and UH resins. … potential due to the resin retention of released Ca2+ via ion binding by carboxylic acid groups of PMGDMA. … Hybridization of the fillers had no effect on the ion release from BTHZ composites. However, internal …

Charge-exchange processes in EBIT: implications for spectral analysis of few-electron Fe ions

April 16, 2025
Author(s)
Yang Yang, FNU Dipti, Amy Gall, Nancy Brickhouse, Hunter Staiger, Galen O'Neil, Paul Szypryt, Adam Foster, David Schultz, Aung Naing, Joseph Tan, Daniel Swetz, Michael Fogle, Randall Smith, Yuri Ralchenko, Endre Takacs
… present measured and simulated spectra of few-electron Fe ions, where we used a single charge-exchange factor to reduce … implications for spectral analysis of few-electron Fe ions …
Displaying 976 - 1000 of 3757
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