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Journals

Optimizing Passive Quantum Clocks

October 8, 2014

Author(s)

Michael J. Mullan, Emanuel Knill

We describe protocols for passive atomic clocks based onquantum interrogation of the atoms. Unlike previous techniques, our protocols are adaptive and take...

Influence of Chemical Straightening on the Stability of Drugs of Abuse in Hair

October 8, 2014

Author(s)

Jeanita Pritchett, Karen W. Phinney

Chemical straightening, also known as a relaxer, is ubiquitously used among African American women to obtain straighter hair compared with their natural tresses...

Collapse and revivals for systems of short-range phase coherence

October 7, 2014

Author(s)

Khan W. Mahmud, Lei Jiang, Philip R. Johnson, Eite Tiesinga

We predict the existence of novel collapse and revival oscillations that are a distinctive signature of the short-range off-diagonal coherence associated with...

Modeling of an air-backed diaphragm in dynamic pressure sensors: effects of the air cavity

October 7, 2014

Author(s)

Haijun H. Liu, Douglas A. Olson, Miao Yu

As the key structure of most dynamic pressure sensors, a diaphragm backed by an air cavity plays a critical role in the determination of sensor performance. In...

Phase-Sensitive Detection of Spin Pumping via the ac Inverse Spin Hall Effect

October 6, 2014

Author(s)

Thomas J. Silva, Justin M. Shaw, Hans T. Nembach, Mathias A. Weiler

Sources of pure spin currents are a fundamental building block of spintronic devices. In ferromagnet/normal metal heterostructures, spin currents are generated...

Comb-calibrated laser ranging for three-dimensional surface profiling with micrometer-level precision at a distance

October 6, 2014

Author(s)

Esther Baumann, Fabrizio R. Giorgetta, Jean-Daniel Deschenes, William C. Swann, Ian R. Coddington, Nathan R. Newbury

Non-contact surface mapping at a distance is interesting in diverse applications including industrial metrology, manufacturing, forensics, and artifact...

A Homogenization Technique for Obtaining Generalized Sheet Transition Conditions for an Arbitrarily Shaped Coated Wire Grating

October 6, 2014

Author(s)

Christopher L. Holloway, Edward Kuester

Using a multiple-scale homogenization method, we derive generalized sheet transition conditions (GSTCs) for an arbitrarily shaped coated wire grating. The...

Economic Impact of Improved Service-Life Prediction for Seams in Low-Slope EPDM Roofing

October 5, 2014

Author(s)

Douglas S. Thomas

In the early part of the 1970's built-up-roofing dominated the U.S. membrane roofing industry. It was estimated that 10 to 15 percent of these roofs failed, but...

The Economics of Residential Fire Sprinklers and the Potential Impact of Recent Code Changes

October 5, 2014

Author(s)

David T. Butry

Residential fire sprinklers reduce the likelihood of room flashover, improving conditions for occupant egress, and thereby reduce the number of fatalities...

Cryogenic Design and Performance of an Apparatus for Magnetically Trapping Ultracold Neutrons

October 5, 2014

Author(s)

Hans P. Mumm

The cryogenic design and performance of an apparatus used to magnetically confine ultracold neutrons (UCN) is presented. The apparatus is part of an effort to...

Electromagnetic scattering from randomly-centered parallel single-walled carbon nanotubes embedded in a dielectric slab

October 2, 2014

Author(s)

Edward Garboczi, ahmed hassan

An analytical full wave model of parallel, randomly dispersed carbon nanotubes (CNTs) embedded in a dielectric slab was developed to calculate the...

From Membrane-in-the-Middle to Mirror-in-the-Middle with a High-Reflectivity Sub-Wavelength Grating

October 2, 2014

Author(s)

Corey A. Stambaugh, Haitan Xu, Utku Kemiktarak, Jacob M. Taylor, John R. Lawall

We demonstrate a ``membrane-in-the-middle'' optomechanical system using a silicon nitride membrane patterned as a subwavelength grating. The grating has a...

Origin of Surface Canting Within Fe₃O₄ Nanoparticles

October 2, 2014

Author(s)

Kathryn L. Krycka, Julie A. Borchers, R. A. Booth, Y. Ijiri, K. Hasz, J. J. Rhyne, S. A. Majetich

The nature of near-surface spin canting within Fe 3O 4 nanoparticles is highly debated. Here we develop a neutron scattering asymmetry analysis which quantifies...

Evaluation of the Impact of Peak Description on the Quantitative Capabilities of Comprehensive Two-Dimensional Liquid Chromatography

October 2, 2014

Author(s)

Benjamin Place, Mallory J. Morris, Melissa M. Phillips, Lane C. Sander, Kate Rimmer

Comprehensive, two-dimensional liquid chromatography (LCxLC) is a powerful technique for the separation of complex mixtures. Most studies using LCxLC are...

Overview of the International Society for Biological and Environmental Repositories (ISBER) Working Groups

October 1, 2014

Author(s)

Rebecca S. Pugh

In 2008, the International Society for Biological and Environmental Repositories (ISBER) developed a new initiative during its annual meeting to develop Working...

The Solution Structure of Full-length Dodecameric MCM by SANS and Molecular Modeling

October 1, 2014

Author(s)

Susan Krueger, Jae-Ho Shin, Joseph E. Curtis, Kenneth A. Rubinson, Zvi Kelman

Universal scaling law for the flow of non-Newtonian colloidal suspension

October 1, 2014

Author(s)

Nicos Martys, William L. George, Maxime Liard, Pascal Hebraud, Didier Lootens

It has been observed that flow curves (viscosity vs shear-rate) of spherical non-colloidal particles suspended in a non-Newtonian fluid matrix can be rescaled...

A pilot interlaboratory comparison of protocols that simulate aging of nanocomposites and detect released fragments

October 1, 2014

Author(s)

Wendel Wohlleben, Deborah Jacobs, Justin Gorham, Li Piin Sung, Tinh Nguyen

The safe use of nanocomposites depends, in part, on a good understanding of the fate of nanofillers throughout the nanocomposite‘s lifecycle. Various...

Spectral broadening and shaping of nanosecond pulses: towards shaping of single photons from quantum emitters

October 1, 2014

Author(s)

Imad I. Agha, Serkan Ates, Luca Sapienza, Kartik Srinivasan

EVALUATION OF A LASER SCANNER FOR LARGE VOLUME COORDINATE METROLOGY - A COMPARISON OF RESULTS BEFORE AND AFTER FACTORY CALIBRATION

October 1, 2014

Author(s)

Massimiliano Ferrucci, Bala Muralikrishnan, Daniel S. Sawyer, Steven D. Phillips, Peter Petrov, Yuri Yakovlev, Andrey Astrelin, Spike Milligan, John Palmateer

Large volume laser scanners are increasingly being used for a variety of dimensional metrology applications. Methods to evaluate the performance of these...

Reducing the Cognitive Load on Analysts Through Hamming Distance Based Alert Aggregation

September 30, 2014

Author(s)

Peter M. Mell, Richard Harang

Previous work introduced the idea of grouping alerts at a Hamming distance of 1 to achieve alert aggregation; such aggregated meta-alerts were shown to increase...

X-ray Powder Reference Patterns of the Fe(Sb2+xTe1-x) Skutterudites for Thermoelectric Applications

September 30, 2014

Author(s)

Winnie K. Wong-Ng, James A. Kaduk, Gangjian Tan, Yonggao Yan, Xinfeng Tang

The crystal structure and powder X-ray diffraction patterns for three skutterudite samples, Fe(Sb2+xTe1-x), x = 0.05, 0.10, 0.20, have been determined. These...

The DNA Damaging Potential of Photoactivated P25 Titanium Dioxide Nanoparticles

September 30, 2014

Author(s)

Elijah Petersen, Vytas Reipa, Stephanie S. Watson, Deborah Jacobs, Savelas A. Rabb, Bryant C. Nelson

Titanium dioxide nanoparticles (TiO2 NPs) are found in numerous commercial and personal care products. Thus, it is necessary to understand and characterize...

Soft Striped Magnetic Fluctuations Competing with Superconductivity in Fe_1+xTe

September 30, 2014

Author(s)

C. Stock, E. E. Rodriguez, O. Sobolev, Jose Rodriguez Rivera, R. A. Ewings, J. W. Taylor, A. D. Christianson, M. A. Green

In-situ morphology studies of the mechanism for solution additive effects on the formation of bulk heterojunction films.

September 29, 2014

Author(s)

Lee J. Richter, Dean M. DeLongchamp, Kang W. Chou, Aram Amassian, A Hexemer, Eric Schaible, Felicia A. Bokel, Sebastian Engmann

The most successful active film morphology in organic photovoltaics is the bulk heterojunction (BHJ). The performance of a BHJ arises from a complex interplay...

Energy Performance Evaluation and Improvement of Unit-Manufacturing Processes: Injection Molding Case Study

September 28, 2014

Author(s)

Jatinder Madan, Mahesh Mani, Kevin W. Lyons, Jae H. Lee

In an effort to make more sustainable decisions, industry seeks reliable methods to assess and compare sustainability for manufacturing. Sustainability...

Friction imprint effect in mechanically cleaved BaTiO3 (001)

September 28, 2014

Author(s)

Christian J. Long, Daniel Ebeling, Santiago D. Solares, Rachel J. Cannara

Investigation of two-phase heat transfer coefficients of argonfreon cryogenic mixed refrigerants

September 28, 2014

Author(s)

Seungwhan Baek

Mixed refrigerant Joule Thomson refrigerators are widely used in various kinds of cryogenic systems these days. Although heat transfer coefficient estimation...

An LC-MS/MS method for serum methylmalonic acid suitable for monitoring vitamin B12 status in population surveys compares well to the previous NHANES GC/MS method and to the NIST reference measurement procedure

September 26, 2014

Author(s)

Karen W. Phinney, Ekaterina M. Mineva, Mindy Zhang, Daniel Rabinowitz, Christine M. Pfeiffer

Assessing the Impact of the National Institute of Standards and Technologys Research Collaborations

September 25, 2014

Author(s)

Amanda J. Malanowski, Susan L. Makar

The Information Services Office (ISO) of the National Institute of Standards and Technology (NIST) conducted a study to assess the impact of NIST research...

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