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.

Journals

ATMP-Stabilized Iron Nanoparticles: Chelator-Controlled Nanoparticle Synthesis

November 1, 2014

Author(s)

Lauren F. Greenlee, Nikki S. Rentz, Roy H. Geiss

Iron nanoparticles are of interest in fields such as water treatment and alternative energy due to their reactive properties and low cost. When combined with...

Effect of Acoustic Excitation on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface

November 1, 2014

Author(s)

Mark A. Kedzierski, Steven E. Fick

This paper quantifies the influence of acoustic excitation of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a commercial...

Details of the Magnetization Reversal in Patterned Exchange-biased and Unbiased Thin Films

November 1, 2014

Author(s)

Robert D. Shull, Y. P. Kabanov, Andrew P. Chen, Cindi L. Dennis, V S. Gornakov, Valerian I. Nikitenko

New features of the magnetization reversal of a patterned bilayer in the form of a square mesh consisting of 16 um wide intersecting stripes of Ni(sub79)Fe...

SLDMOL: A Tool for the Structural Characterization of Thermally Disordered Membrane Proteins

November 1, 2014

Author(s)

Joseph E. Curtis, Hailiang Zhang, Hirsh Nanda

SLDMOL is a program for modeling the one-dimensional scattering length density (SLD) profile of proteins at the lipid membrane-solution interface or adsorbed to...

Change in the Magnetic Structure of (Bi,Sm)FeO₃ Thin Films at the Morphotropic Phase Boundary Probed by Neutron Diffraction

November 1, 2014

Author(s)

Shingo Maruyama, Varatharajan Anbusathaiah, Amy Fennell, Mechthild Enderle, Ichiro Takeuchi, William D. Ratcliff

We report on the evolution of the magnetic structure of BiFeO 3 thin films grown on SrTiO 3 substrates as a function of Sm doping. We determined the magnetic...

Direct evidence of active and inactive phases of Fe catalyst nanoparticles for carbon nanotube formation

November 1, 2014

Author(s)

Stefano Mazzuccoo, Ying Wang, Mihaela M. Tanase, Matthieu C. Picher, Kai Li, Zhijian WU, Stephan Irle, Renu Sharma

Iron and carbon interactions play an important role in various industrial processes such as steel manufacturing, liquid fuel the production by Fischer Tropsch...

Reproducible x-ray reflectometry optimization: statistical analysis of differential evolution fitting of multilayer structural models

October 31, 2014

Author(s)

Donald Windover, David Gil, Yasushi Azuma, Toshiyuki Fujimoto

We test the reproducibility of X-ray reflectometry(XRR) measurements and optimizations using an National Metrology Institute of Japan (NMIJ)/National Institute...

Structural and Dynamical Studies of Acid Mediated Conversion in Amorphous-Calcium-Phosphate Based Dental Composites

October 31, 2014

Author(s)

Fan Zhang, Andrew Allen, Lyle E. Levine, Mark D. Vaudin, Drago Skrtic, Joseph M. Antonucci, Kathleen Hoffman, Anthony A. Giuseppetti, Jan Ilavsky

Amorphous calcium phosphate (ACP) based composites are promising restorative dental materials attributable to ACP's capacity to release calcium and phosphate...

Liquid Chromatography: Fundamentals and Instrumentation

October 30, 2014

Author(s)

Catherine Rimmer

Effect of Heterogeneity in Nano-TiO2 Filled Acrylic Urethane Coatings on Surface Degradation under Accelerated UV Exposure

October 30, 2014

Author(s)

Yongyan Pang, Stephanie S. Watson, Li Piin Sung

The objective of this study was to investigate how the heterogeneity due to nanoparticle dispersion of polymeric coatings affects surface morphological changes...

Frequency Comb Generation in Superconducting Resonators

October 30, 2014

Author(s)

Robert P. Erickson, Michael Vissers, Martin O. Sandberg, Steven R. Jefferts, David P. Pappas

We have generated frequency combs spanning 0.5 to 20 GHz in superconducting λ=2 resonators at T ¼ 3 K. Thin films of niobium-titanium nitride enabled this...

Two-photon microwave transitions and strong-field effects in a room-temperature Rydberg-atom gas

October 29, 2014

Author(s)

Christopher L. Holloway, Joshua A. Gordon

We investigate two-photon transitions and strong-field effects on Rydberg atoms using Autler- Townes splitting of electromagnetically-induced transparency...

Frequency-Comb-Based Remote Sensing of Greenhouse Gases over Kilometer Air Paths

October 29, 2014

Author(s)

Greg B. Rieker, Fabrizio R. Giorgetta, William C. Swann, Jonathan Kofler, Alexander M. Zolot, Laura C. Sinclair, Esther Baumann, Christopher L. Cromer, G. Petron, Colm Sweeney, P P. Tans, Ian R. Coddington, Nathan R. Newbury

We demonstrate frequency comb tooth-by-tooth measurements of atmospheric gas absorption across a 2-km, turbulent, open-air path through coherent dual-comb...

Influence of Sidechain Regiochemistry on the Transistor Performance of High Mobility All Donor Polymers

October 29, 2014

Author(s)

Zhuping Fei, Pichaya Pattanasattayavong, Yang Han, Feng Yan, Regis J. Kline, Thomas D. Anthopoulos, Martin Heeney

Optimal Deployment of Pico Base Stations in LTE-Advanced Heterogeneous Networks

October 29, 2014

Author(s)

Sungseob Lee, SuKyoung Lee, Kim KyungSoo, David W. Griffith, Nada T. Golmie

As data traffic demand in cellular networks grows exponentially, operators need to add new cell sites to keep up; unfortunately, it is costly to build and...

Carbon Monoxide Exposure from Portable Generators

October 28, 2014

Author(s)

Steven J. Emmerich, Andrew K. Persily, Liangzhu Wang

Serious concerns exist about the hazard of acute residential carbon monoxide (CO) exposures from portable gasoline-powered generators, which can result in death...

Extended and Revised Analysis of Singly Ionized Tin: Sn II

October 28, 2014

Author(s)

K. Haris, Alexander Kramida, A. Tauheed

The electronic structure of singly ionized tin (Sn II) is partly a one-electron and partly a three-electron system with ground configuration 5s25p. The excited...

Nanoscale Structural Heterogeneity in Ni-rich Half-Heusler TiNiSn

October 28, 2014

Author(s)

Jason E. Douglas, Philip A. Chater, Craig Brown, Tresa M. Pollock, Ram Seshadri

The structural implications of excess Ni in the TiNiSn half-Heusler compound are examined through a combination of synchrotron x-ray and neutron scattering...

Universal and non-universal effective N-body interactions for ultracold harmonically-trapped few-atom systems

October 28, 2014

Author(s)

X. Y. Yin, D Blume, Philip Johnson, Eite Tiesinga

We derive the ground-state energy for a small number of ultracold atoms in an isotropic harmonic trap using effective quantum field theory (EFT). Atoms are...

Nanoparticle size determination using optical microscopes

October 27, 2014

Author(s)

Ravikiran Attota, Richard J. Kasica, Premsagar P. Kavuri, Hyeong G. Kang, Lei Chen

We present a simple method for size determination of nanoparticles using conventional optical microscopes. The method, called through-focus scanning optical...

The Leucine-Rich Amelogenin Peptide (LRAP) is a Partially Structured Monomer in Solution

October 25, 2014

Author(s)

Barbara J. Tarasevich, John S. Philo, Nasib Karl Mulof, Susan T. Krueger, Garry W. Buchko, Genyao Lin, Wendy J. Shaw

Amelogenin proteins are critical to the formation of enamel in teeth and may have roles in promoting nucleation, controlling growth, and regulating...

Path degeneracy and EXAFS analysis of disordered materials

October 24, 2014

Author(s)

Bruce D. Ravel

The analysis of EXAFS data measured on a material with a disordered local configuration environment around the absorbing atom can be challenging due to the...

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...

Magnetoencephalography of Epilepsy with a Microfabricated Atomic Magnetrode

October 22, 2014

Author(s)

Svenja A. Knappe, Orang Alem, Alex M. Benison, Daniel S. Barth, John E. Kitching

We measured the magnetic signature of epileptiform discharges with high signal-to-noise ratio, using microfabricated atomic magnetometers based on laser...

Prediction and Validation of Diffusion Coefficients in a Model Drug Delivery System Using Microsecond Atomistic Molecular Dynamics Simulation and Vapor Sorption Analysis

October 21, 2014

Author(s)

Christopher Forrey, D M. Saylor, Joshua S. Silverstein, Jack F. Douglas, Eric Davis, Yossef A. Elabd

Diffusion of small to medium sized molecules in polymeric medical device materials underlies a broad range of public health concerns related to unintended...

Beating the standard quantum limit for force sensing with coupled two-mode optomechanical system

October 21, 2014

Author(s)

Xunnong Xu, Jacob Taylor

Optomechanics provides a method to transduce weak forces to optical fields, with many e↵orts approach the standard quantum limit. We consider force sensing...

Tunable Cobalt Vacancies and Related Properties in LaCo_xAs₂

October 21, 2014

Author(s)

Shijie Shen, Gang Wang, Shifeng Jin, Qingzhen Huang, Tianping Ying, Dandan Li, Xiaofang Lai, Tingting Zhou, Han Zhang, Zhiping Lin, Xiaozhi Wu, Xiaolong Chen

The origin of transition metal vacancies and their effects on the properties of ThCr 2Si 2-type compounds have been less studied and poorly understood. Here we...

Fast, high-fidelity, all-optical and dynamically-controlled polarization gate using room-temperature atomic vapor

October 21, 2014

Author(s)

Runbing Li, Chengjie Zhu, Lu Deng, Edward W. Hagley

We demonstrate a fast, all-optical polarization gate in a room-temperature atomic medium. Using a Polarization-Selective-Kerr-Phase-Shift (PSKPS) technique, we...

Comparison of the performance of different models for the interpretation of low level mixed DNA profiles

October 21, 2014

Author(s)

Michael D. Coble, Todd Bille, Steven Weitz, John Buckleton, Jo Bright

DNA analyses from casework samples commonly result in complex DNA profiles. Often, these profiles consist of multiple contributors and display multiple...

Development and Applications of Non-destructive Screening Tools for Thermoelectric Materials at NIST

October 20, 2014

Author(s)

Winnie K. Wong-Ng, Yonggao Y. Yan, Joshua B. Martin, Makoto Otani, Evans L. Thomas, Xinfeng Tang, Martin L. Green

The increased research and development of thermoelectric materials for energy conversion applications is driven primarily by the need for improved efficiency in...

Was this page helpful?