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NIST Authors in Bold

Displaying 1551 - 1575 of 4634

Direct Measurement of Lithium Transport in Graphite Electrodes with Neutrons

April 1, 2012
Author(s)
David Jacobson, Jeffrey J. Gagliardo, Jon P. Owejan, Stephen J. Harris, Howard Wang, Daniel Hussey
… layer transport resistance as they relate to lithium-ion battery performance and durability. In this work, we … battery, high-resolution, ion, lithium, neutron, radiography …

Copper-Catalyzed Radiolytic Reduction of CO 2 to CO in Aqueous Solutions

May 1, 2001
Author(s)
J Grodkowski, Pedatsur Neta
Radiolysis of aqueous solutions containing CO 2 and Cu(II) ions under reducing conditions leads first to reduction of the Cu(II) and then to formation of CO. Experiments under various conditions show that although Cu(II) was often reduced to colloidal Cu(0

Ethoxylated Bisphenol Dimethacrylate-Based Amorphous Calcium Phosphate Composites

January 1, 2006
Author(s)
Drago Skrtic, Joseph M. Antonucci, D W. Liu
… 40 %). One aim of the study was to test if improved ion release can be achieved by elevating the EBPADMA/TEGDMA … and WS, and the composites were evaluated for the mineral ion release as well. Overall ion release of all composites was, significantly above the …

Analysis of E3 Transitions in Ag-like High-Z Ions Observed with the NIST EBIT

March 1, 2023
Author(s)
Yuri Ralchenko, David La Mantia, Aung S. Naing, Paul Szypryt, Joseph N. Tan, Endre Takacs, Dipti Dipti, Yang Yang, Adam Hosier, Hunter Staiger
… an insight into the population kinematics for Ag-like ions of heavy elements. We discuss the observed spectra and … Analysis of E3 Transitions in Ag-like High-Z Ions Observed with the NIST EBIT …

Emerging Topics: MEMS Atomic Clocks

November 1, 2007
Author(s)
Svenja A. Knappe
The combination of MEMS fabrication with atomic clocks has enabled a new generation of small, cheap, low-power devices. Since the proposal of chip-scale atomic clocks (CSACs) in 2002, the fields of MEMS-based atomic sensors and coherent population trapping

Use of Thorium as a Target in Electron Spin Analyzers

April 1, 1989
Author(s)
Jabez J. McClelland, M Scheinfein, Daniel T. Pierce
… Comparison is made with scattering from a 1250-Aring} gold film. Thorium is seen to have a S eff up to 30% higher than gold. This higher S eff can not only improve the figure of … seen in the thorium Sherman function relative to that of gold. …

Application of the Three O Method to a Film on a Substrate of Finite Thickness

October 1, 1999
Author(s)
J Y. Kim, A Feldman, Donald B. Novotny
The three omega thermal conductivity measurement method is analyzed for the case of one or more thin films on a substrate of finite thickness. The analysis is used to obtain the thermal conductivities of SiO 2 films on Si substrates and of a chemical vapor

Nanoparticle Architecture Preserves Magnetic Properties during Coating to Enable Robust Multi-Modal Functionality

August 23, 2018
Author(s)
Lauren E. Woodard, Cindi L. Dennis, Julie Borchers, Anilchandra Attaluri, Esteban Velarde, Charlene Dawidczyk, Peter C. Searson, Martin G. Pomper, Robert Ivkov
… [1-9]. We describe the synthesis and characterization of gold/silica/iron oxide core-shell nanoparticles, for which … iron oxide core, while preserving the magnetic properties. Gold was reduced from solution to encapsulate the silica/iron … laser heating indicates improved energy conversion with gold coating. In vivo imagining and heating is demonstrated …

Unusual Fragmentations of Silylated Polyfluoroalkyl Compounds Induced by Electron Ionization

August 12, 2025
Author(s)
Yufang Zheng, Edward Erisman, Weihua Ji, Stephen Stein, William Wallace
… groups. For example, a previously unreported [M−111]⁺ ion was consistently observed in compounds containing three … confirmed the origin and elemental composition of this ion. MS2 experiments and full scan of TMS derivatives of … fluorinated alcohols, fluorinated carboxylic acids, ion fragmentation pathway, PFAS, reference library, reference …

Characterization of Emerging Ambient Pressure Mass Spectrometric Techniques using Time-of-Flight Secondary Ion Mass Spectrometry

March 28, 2014
Author(s)
Shinichiro Muramoto, Thomas P. Forbes, Matthew E. Staymates, John G. Gillen
… Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used to characterize the … angles also corresponded with higher relative secondary ion yields as measured by ambient MS and ToF-SIMS. For LTP, a … oblique angles corresponded with higher relative secondary ion yields, although the analyte did not display a distinct …

Microstructural Evolution in Lead-Free Solder Alloy. Part II: Directionally Solidified Eutectic Tin-Silver-Copper, Tin-Copper and Tin-Silver Alloys.

October 12, 2021
Author(s)
S L. Allen, M R. Notis, R R. Chromik, Richard P. Vinci, D J. Lewis, Robert J. Schaefer
The tin-silver-copper eutectic is a three-phase eutectic consisting of Ag(sub3)Sn plates and Cu(sub6)Sn(sub 5) rods in a (Sn) matrix. It is thought that the two phases will coarsen independently. Directionally solidified ternary eutectic and binary
Displaying 1551 - 1575 of 4634
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