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NIST Authors in Bold

Displaying 2251 - 2275 of 2539

Ultraviolet/Ozone as a tool to control grafting density in surface-initiated controlled-radical polymerizations via ablation of bromine

July 21, 2016

Author(s)

Richard J. Sheridan, Sara V. Orski, Shinichiro Muramoto, Christopher M. Stafford, Kathryn L. Beers

… We collected complementary time-of-flight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron …

Unparalleled Lithium and Sodium Superionic Conduction in Solid Electrolytes with Large Monovalent Cage-like Anions

October 8, 2015

Author(s)

Wan Si NMN Tang, Atsushi Unemoto, Wei Zhou, Vitalie Stavila, Motoaki Matsuo, Hui Wu, Shin-Ichi Orimo, Terrence J. Udovic

… rechargeable batteries. We recently revealed a novel fast-ion-conducting sodium salt, Na 2 B 12 H 12 , which contains …

Simulation Studies of Methods to Delay Corrosion and Increase Service Life for Cracked Concrete Exposed to Chlorides

February 18, 2015

Author(s)

Scott Z. Jones, Nicos Martys, Yang Lu, Dale P. Bentz

The ingress of chlorides in reinforced concrete leads to the onset of rebar corrosion and eventually compromises a structures integrity. To extend its service life and improve safety, it is crucial to develop sound repair and rehabilitation strategies for

Structure and Stability of Phospholipid Bilayers Hydrated by a Room-Temperature Ionic Liquid/Water Solution: a Neutron Reflectometry Study

October 23, 2014

Author(s)

Antonio Benedetto, Frank Heinrich, Miguel A. Gonzalez, Giovanna Fragneto, Erik Watkins, Pietro Ballone

Neutron reflectometry measurements (NR) have been carried out to probe the structure and stability of two model bio-membranes consisting of POPC and DMPC phospholipid bilayers hydrated by water solutions of two prototypical room-temperature ionic liquids

Errors in Variables and Ridge Regression for Structural Data from Synthesized Amorphous Calcium Phosphate

September 19, 2014

Author(s)

Adam L. Pintar

As vertebrates form mineralized tissues such as bone and teeth they use amorphous mineral precursors to store ions for use as needed. One such precursor is thought to be amorphous calcium phosphate (ACP), but this idea has lately come into question because

Performance Benchmarking and Intensity Calibration of a Widefield Fluorescence Microscope Using Fluorescent Glass

August 11, 2014

Author(s)

Michael W. Halter, Elianna Bier, Paul C. DeRose, Gregory A. Cooksey, Steven J. Choquette, Anne L. Plant, John T. Elliott

… two different materials as the physical artifact, uranyl-ion-doped glass and Schott 475 GG filter glass. Both are …

Synapsable quadruplex-mediated fibers

May 3, 2013

Author(s)

Veronika A. Szalai, Miguel A. Mendez

We have fabricated and characterized a novel DNA based nanofiber created by synergistic self-assembly of guanine quadruplex (Hoogsteen base pairing) and double-stranded DNA (Watson-Crick base pairing). The assembly of our nanofibers occurs in several steps

Microwave-Assisted Extraction and Quantitative LC/ID-MS Measurement of Total Choline and Free Carnitine in Food Standard Reference Materials

December 4, 2012

Author(s)

Melissa M. Phillips, Lane C. Sander

Choline and carnitine are quaternary amines that are synthesized in the body or consumed through the diet. Choline is critical for cell membrane structure and function and in synthesis of the neurotransmitter acetylcholine. Carnitine mediates cellular

Organophosphate and Phthalate Esters in Standard Reference Material 2585 "Organic Contaminants in House Dust"

November 8, 2011

Author(s)

Stephen A. Wise, Caroline Bergh, Giovanna Luongo, Conny Ostman

… gas chromatography - tandem mass spectrometry in positive ion chemical ionization mode. Seven phthalates were detected …

Multi-level Spectroscopy of Two-Level Systems Coupled to a dc SQUID Phase Qubit

April 7, 2010

Author(s)

T. A. Palomaki, S. K. Dutta, R M. Lewis, A J. Przybysz, B. K. Cooper, H. Kwon, J. R. Anderson, C. J. Lobb, F. C. Wellstood, Eite Tiesinga

We report spectroscopic measurements of discrete two-level systems (TLSs) coupled to a dc SQUID phase qubit with a 16 μm2 area Al/AlOx/Al junction. Applying microwaves in the 10 GHz to 11 GHz range, we found eight avoided level crossings with splitting

From Stable Lasers to Optical-Frequency Clocks

October 16, 2008

Author(s)

John L. Hall, Jun Ye, L -. Ma, J L. Peng, M Notcutt, J D. Jost, A Marian

… the Hydrogen Maser. We note the bifurcation between single-ion-based clocks - likely to be the stability/reproducibility …

Measuring the Extent of Exfoliation in Polymer/Clay Nanocompsites Using Real-Time Process Monitoring Methods

October 16, 2008

Author(s)

Anthony J. Bur, T Y. Lee, S C. Roth, P R. Start

Polymer/Clay nanocomposites were compounded using a twin screw extruder that was instrumented with multiple sensors. The sensors were situated in a slit die chamber that was attached to the exit of the extruder and yielded data about dielectric, optical

Realizing the SI in the 21st Century at NIST

October 16, 2008

Author(s)

K B. Gebbie

… an optical atomic clock based on a single trapped 199 Hg+ ion to take advantage of the higher operating frequency, and …

Relative Volatilities of Ionic Liquids by Vacuum Distillation of Ionic Liquid Mixtures

June 7, 2007

Author(s)

Jason A. Widegren, Yi-ming Wang, Wesley A. Henderson, Joe W. Magee

The relative volatilities of a variety of common, aprotic ionic liquids have been determined for the first time. Equimolar mixtures of ionic liquids were vacuum distilled in a glass sublimation apparatus at approximately 473 K. The composition of the

Thermolithographic Patterning of Sol-Gel Metal Oxides on Micro hot plate Sensing Arrays Using Organosilanes

September 1, 2003

Author(s)

N O. Savage, S V. Roberson, John G. Gillen, Michael J. Tarlov, Stephen Semancik

… were characterized with condensation figures and secondary ion mass spectrometry (SIMS) imaging. TFS was removed from …

Formation and Reaction of Br 2 - Radicals in the Ionic Liquid Methyltributylammonium Gis(trifluoromethylsufonyl)imide and in Other Solvents

November 1, 2002

Author(s)

J Grodkowski, Pedatsur Neta

Reaction of solvated electrons with BrCh 2Ch 2Br produces Br - and CH 2CH 2Br, which decomposes rapidly into CH 2=CH 2 and Br with Br 2 -. The stability of Br 2 - is much greater in the ionic liquid and in acetonitrile than in water or alcohols. The rate

Superconformal Electrodeposition of Copper in 500-90 nm Features

December 1, 2000

Author(s)

Thomas P. Moffat, Daniel Wheeler, W H. Huber, Daniel Josell

… counterbalance the influence of the differential cupric ion concentration that develops within the tranches. …

Correlation of End-of-Range Damage Evolution and Transient Enhanced Diffusion of Boron in Regrown Silicon

December 1, 1999

Author(s)

L S. Robertson, M E. Law, K. S. Jones, L M. Rubin, J Jackson, P Chi, David S. Simons

… at 750 C, for times ranging from 15 min to 6 h. Secondary ion mass spectrometry was used to monitor the dopant …

The Vibrational Spectra of CO 2 + , (CO 2 ) 2 + , CO 2 - , and (CO 2 - Trapped in Solid Neon

September 8, 1999

Author(s)

Warren E. Thompson, Marilyn E. Jacox

… or by a weakly interacting (CO 2 ) n CO 2 complex. Such ion-molecule complexes contribute other absorptions near υ 3 …

Reinterpretation of the Spectra of Hydrated Co++: An ab initio Study

July 1, 1998

Author(s)

H S. Gilson, Morris Krauss

… for these complexes with one water replaced by a hydroxide ion. The results of the calculations are compared with …

Photothermal Radiometry Applied to Angstrom's Method for Measuring the Thermal Diffusivity of CVD Diamond

April 1, 1998

Author(s)

A Feldman, N M. Balzaretti

… same specimens. The heat source was the beam of an argon-ion laser focused onto the specimen surface either with a …

Acid Gas Production in Inhibited Propane-Air Diffusion Flames

August 21, 1994

Author(s)

Gregory T. Linteris

… analysis of the final products of the flames using ion-selective electrodes for F anc Cl provides an …

Acid Gas Production in Inhibited Diffusion Flames

May 3, 1994

Author(s)

Gregory T. Linteris, M D. King, A Liu, C A. Womeldorf, Y. E. Hsin

… analysis of the final products of the flames using ion-selective electrodes for F and Cl provided an …

Investigation of the Charge Compensation Mechanism on the Electrochemically Li-ion Deintercalated Li1xCo1/3Mn1/3O2 Electrode System by Combination of Soft and Hard X-ray Absorption Spectroscopy

December 14, 2005

Author(s)

W S. Yoon, Mahalingam Balasubramanian, Kyung Y. Chung, Xiao-Qing Yang, J Bcbreen, C P. Grey, Daniel A. Fischer

… Charge Compensation Mechanism on the Electrochemically Li-ion Deintercalated Li1xCo1/3Mn1/3O2 Electrode System by …

Electron-impact excitation of multiply-charged ions using energy loss in merged beams: e+Si 3+ (3s 2 S 1/2 )- e+Si 3+ (3p 2 P 1/2,3/2 ), in Proceedings, Vth International Conference on the Phys

January 1, 1991

Author(s)

E K. Wahlin, J S. Thompson, G H. Dunn, R A. Phaneuf, D C. Gregory, A C. Smith

… Electron-impact excitation of multiply-charged ions using energy loss in merged beams: e+Si 3+ (3s 2 S 1/2 …

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