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Journals

A multi-year estimate of methane fluxes in Alaska from CARVE atmospheric observations

October 9, 2016

Author(s)

Anna Karion, Scot Miller, Anna Michalak, Rachel Chang, Steven Dinardo, Jakob Lindaas, Colm Sweeney, Roisin Commane

Methane (CH4) fluxes from Alaska and other arctic regions may be sensitive to thawing permafrost and future climate change, but estimates of both current and...

Supramolecular Self-assembly of a Novel Hydrogelator: Characterization of Fiber Morphology and Formation and Thermal-Reversible Gelation

October 8, 2016

Author(s)

Jack F. Douglas, Yuan Gao Yuan Gao, Ryan C. Nieuwendaal, Emilios Dimitriadis, Boualem Hammouda, Bing Xu, Ferenc Horkay

Hydrogels are of intense recent interest in connection with biomedical applications ranging from 3-D cell cultures and stem cell differentiation to regenerative...

Transfer Standard Uncertainty Can Cause Inconclusive Inter-Laboratory Comparisons

October 7, 2016

Author(s)

John D. Wright, Blaza Toman, Bodo Mickan, Gerd Wubbeler, Olha Bodnar, Clemens Elster

Inter-laboratory comparisons use the best available transfer standards to check the participants uncertainty analyses, identify underestimated uncertainty...

Light Source Effects on Aerosol Photoacoustic Spectroscopy Measurements

October 6, 2016

Author(s)

James G. Radney, Christopher D. Zangmeister

Photoacoustic spectroscopy measurements of flame-generated soot aerosol coated with small amounts of water yielded absorption enhancements that were dependent...

A Thin-Film Cryotron Suitable For Use as an Ultra-Low-Temperature Switch

October 6, 2016

Author(s)

Peter J. Lowell, John A. Mates, William B. Doriese, Gene C. Hilton, Kelsey M. Morgan, Daniel S. Swetz, Joel N. Ullom, Daniel R. Schmidt

Low-temperature superconducting circuits have become important in modern science. However, there are presently no high-current-capacity switches with low power...

Classification of biodegradable materials using QSAR modeling with uncertainty estimation

October 6, 2016

Author(s)

Werickson Fortunato de Carvalho Rocha, David Sheen

The ability to determine the biodegradability of chemicals without resorting to expensive tests is ecologically and economically desirable. Models based on...

Colloidal Properties and Stability of Aqueous Suspensions of Few Layer Graphene: Importance of Graphene Concentration

October 6, 2016

Author(s)

Yu Su, Elijah Petersen, Liang Mao

Understanding the agglomeration behaviors and stability of graphene in natural waters is essential for predicting its transport and fate in aquatic environments...

(Magic Dopant) Amphoteric Behavior of a Redox-Active Transition Metal Ion in a Perovskite Lattice: New Insights on the Lattice Site Occupation of Manganese in SrTiO3

October 5, 2016

Author(s)

Russell A. Maier, Matthew P. Donohue

It is definitively shown for the first time that a transition metal, redox-active ion can exhibit amphoteric substitution in the SrTiO3 perovskite lattice. The...

Measurement of powder bed density in powder bed fusion additive manufacturing processes

October 5, 2016

Author(s)

Gregor Jacob, M A. Donmez, Shawn P. Moylan, John A. Slotwinski

There are many factors influencing the additive manufacturing (AM) processes resulting in high degree of variation in process outcomes. Therefore, quantifying...

High Rank Elliptic Curves with Torsion Z/4Z induced by Kihara's Curves

October 5, 2016

Author(s)

Foad Khoshnam, Dustin Moody

Working over the field Q(t), Kihara constructed an elliptic curve with torsion group Z/4Z and five independent rational points, showing the rank is at least...

The rheo-Raman microscope: Simultaneous chemical, conformational, mechanical, and microstructural measures of soft materials

October 4, 2016

Author(s)

Anthony P. Kotula, Matthew Meyer, Francesca De Vito, Jan Plog, Angela R. Hight Walker, Kalman D. Migler

We describe the design and demonstrate performance of an instrument capable of simultaneous Raman spectroscopy, rheology, and optical microscopy of materials...

An Activity Model for Factory Design and Improvement

October 4, 2016

Author(s)

Kiwook Jung, Sangsu Choi, Boonserm Kulvatunyou, Hyunbo Cho, Katherine C. Morris

Smart Manufacturing Systems (SMS) are envisioned to contain highly-automated and IT-driven production systems. To address the complexity that arises in such...

Quantifying the impact of ionic liquid cations on the properties of cellulose nanocrystals

October 3, 2016

Author(s)

Jeffrey W. Gilman, Douglas M. Fox, Jeremiah W. Woodcock

Ionic liquids, and the novel cations and anions which they are comprised of, have been used to modify the properties of many classes of materials. This includes...

Using Absorption Cross Section to Predict Coherence Bandwidth and other Characteristics of a Reverberation Chamber Set-up for Wireless System Tests

October 3, 2016

Author(s)

Catherine A. Remley, Jos Dortmans, Damir Senic, Chih-Ming Wang, Christopher L. Holloway

We present a method to predict the coherence bandwidth, delay spread and power transfer function of a reverberation chamber set-up. The method is based on the...

Ionization potentials of superheavy elements No, Lr, and Rf and their ions

October 3, 2016

Author(s)

Vladimir A. Dzuba, M.S. Safronova, Ulyana I. Safronova, Alexander Kramida

We predict ionization potentials of superheavy elements No, Lr, and Rf and their ions using a relativistic hybrid method that combines con figuration...

Determination of Closed Porosity in Rocks by Small-Angle Neuron Scattering

October 3, 2016

Author(s)

Jitendra Bahadur, Christian R. Medina, Lilin He, Yuri B. Melnichenko, John A. Rupp, Tomasz P. Blach, David F. Mildner

Small-angle neutron (SANS) and ultra small-angle neutron scattering (USANS) has been used to study a carbonate rock from a deep saline aquifer that is a...

A Hierarchical Structure of Key Performance Indicators for Operation Improvement in Production Systems

October 3, 2016

Author(s)

Ningxuam Kang, Cong Zhao, Jingshan Li, John A. Horst

Key performance indicators (KPIs) are critical for manufacturing operation management (MOM) and continuous improvement (CI). In modern manufacturing systems...

Introduction to CFTT and CFReDS Projects at NIST

October 3, 2016

Author(s)

Jungheum Park, James R. Lyle, Barbara Guttman

Along with the development and propagation of Information & Communication Technology (ICT), digital evidence becomes more common and crucial to solving various...

Time in Cyber-Physical Systems

October 2, 2016

Author(s)

Marc A. Weiss, Sundeep Chandhoke, Hugh Melvin

Time is central to predicting, measuring and controlling properties of the physical world, and is one of the most important constraints distinguishing Cyber...

Nanoscale tomographic reconstruction of the subsurface mechanical properties of low-k high-aspect ratio patterns

October 2, 2016

Author(s)

Gheorghe Stan, Ebony Mays, Hui-Jae Yoo, Sean King

In this work, intermittent contact resonance (ICR)-AFM was performed on high-aspect ratio a-SiOC:H patterned fins (100 nm in height and width from 20 nm to 90...

STANDARD REPRESENTATIONS FOR CHARACTERIZATION OF INDUSTRIAL PROCESSES

October 1, 2016

Author(s)

Mahesh Mani, Jon Larborn, Bjoern J. Johansson, Kevin W. Lyons, Katherine C. Morris

This paper describes ASTMs new guide for characterizing the environmental aspects of manufacturing processes (ASTM WK35705). The guide defines a generic...

A New Family of Metal Borohydride Guanidinate Complexes: Synthesis, Structures and Hydrogen-Storage Properties

October 1, 2016

Author(s)

Hui Wu, Xiuquan Zhou, Efrain E. Rodriguez, Wei Zhou, Terrence J. Udovic, Taner Yildirim, John J. Rush

We report a new class of high-hydrogen-content inorganic-organic hybrid complex hydrides: borohydride guanidinate complexes (MBH 4•nCN 3H 5, M=Li, Mg, and Ca)...

Security Fatigue

October 1, 2016

Author(s)

Brian C. Stanton, Sandra S. Prettyman, Mary F. Theofanos, Susanne M. Furman

Freezing Time: Dynamic Laser Tracker Measurements with the Pixel Probe using Temporal Aliasing

October 1, 2016

Author(s)

Joshua A. Gordon, Steven S. Borenstein

We present a non-contact technique for measuring objects in motion with a laser tracker without the laser tracker needing to follow the object. This method...

Realization, Maintenance and Dissemination of the Kilogram in the Revised SI

October 1, 2016

Author(s)

Stephan Schlamminger, Horst Bettin

How Novel Algorithms and Access to High Performance Computing Platforms are Enabling Scientific Progress in Atomic and Molecular Physics

October 1, 2016

Author(s)

Barry I. Schneider

Over the past 40 years there has been remarkable progress in the quantitative treatment of complex many-body problems in atomic and molecular physics (AMP)...

Rapid and Accurate C-V Measurements

October 1, 2016

Author(s)

Jihong Kim, Pragya Shrestha, Jason Campbell, Jason Ryan, David M. Nminibapiel, Joseph Kopanski, Kin P. Cheung

We report a new technique for the rapid measurement of full capacitance-voltage (C-V) characteristic curves. The displacement current from a 100 MHz applied...

From Serendipity to Rational Design: Tuning the Blue Trigonal Bipyramidal Mn³⁺ Chromophore to Violet and Purple through Application of Chemical Pressure

October 1, 2016

Author(s)

Jun Li, Simon Lorger, Judith K. Stalick, Arthur W. Sleight, M. A. Subramanian

We recently reported that an allowed d-d transition of trigonal bipyramidal (TBP) Mn 3+ is responsible for the bright blue color in the YIn 10xMn xO 3 solid...

Correlation Between Morphology and Device Performance of pBTTT:PC₇₁BM Solar Cells

October 1, 2016

Author(s)

Wenluan Zhang, Hao Shen, Brett W. Guralnick, Brian Kirby, Ngoc A. Nguyen, Roddel Remy, Charles Majkrzak, Michael E. Mackay

Phenyl-C 71-butyric acid methyl ester (PC 71BM) could intercalate between the side-chains of poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene...

Measuring the reactivity of a silicon-terminated probe

September 30, 2016

Author(s)

Adam Sweetman, Julian Stirling, Philipp Rahe, Philip Moriarty

It is generally accepted that the exposed surfaces of silicon crystals are highly reactive due to the dangling bonds which protrude into the vacuum. However, it...

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