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Journals

Absolute Silicon Mass Measurements in support of the International Avogadro Project and the Redefinition of the Kilogram

June 25, 2014

Author(s)

Robert D. Vocke Jr., Savelas A. Rabb, Gregory C. Turk

As the Planck and Avogadro constants are tied by the molar Planck constant, any redefinition of the kilogram using an accurately determined Planck constant (h)...

Investigating the potential role of persistent organic pollutants in Hawaiian green sea turtle fibropapillomatosis

June 25, 2014

Author(s)

Jennifer M. Lynch

It has been hypothesized for decades that environmental pollutants may contribute to green sea turtle fibropapillomatosis (FP) possibly through...

Interrelationship between Number of Mobile Protons, Diffusion Coefficient, and AC Conductivity in Superprotonic Conductors, CsHSO₄ and Rb₃H(SeO₄)₂

June 25, 2014

Author(s)

Kazuya Kamazawa, Masashi Harada, Toru Araki, Yasumitsu Matsuo, Madhu Sudan Tyagi, Jun Sugiyama

Using quasielastic neutron scattering (QENS), we investigated proton dynamics for two superprotonic conductors, CsHSO 4 and Rb 2H(SeO 4) 2. In the superprotonic...

Three Dimensional Cluster Distributions in Processed Multi-wall Carbon Nanotube Polymer Composites

June 25, 2014

Author(s)

Doyoung Moon, Jan Obrzut, Jack F. Douglas, Thomas F. Lam, Krzysztof Koziol, Kalman D. Migler

We determine the three-dimensional structure of melt-mixed carbon nanotube networks in an amorphous polymer via confocal microscopy and image analysis. We find...

A nonlinearity in permanent-magnet systems used in watt balances

June 25, 2014

Author(s)

Shisong Li, Stephan Schlamminger, Jon R. Pratt

In watt balances that employ permanent magnet systems to generate the magnetic flux the effects of the weighing current on the magnet systems can generate a...

Vapor Phase Metal-Assisted Chemical Etching of Silicon

June 25, 2014

Author(s)

Owen J. Hildreth, Daniel R. Schmidt

This work introduces and explores vapor phase metal‐assisted chemical etching (VP‐MaCE) of silicon as a method to bypass some of the challenges found in...

Power coupling and utilization efficiencies of silicon-depositing plasmas in mixtures of H2, SiH4, Si2H6, and Si3H8

June 24, 2014

Author(s)

Mark A. Sobolewski

Adding Si2H6 or Si3H8 additives to SiH4/H2 discharges increases the growth rates for thin films of microcrystalline and amorphous silicon, but the reasons for...

Elucidating the Effects of Adsorbent Flexibility on Fluid Adsorption Using Simple Models and Flat-Histogram Sampling Methods

June 24, 2014

Author(s)

Vincent K. Shen, Daniel W. Siderius

Using flat-histogram Monte Carlo methods, we investigate the adsorptive behavior of the square-well fluid in two simple slit-pore- like models intended to...

Horizontal Convective Boiling of R134a, R1234yf/R134a, and R1234ze(E)within a Micro-Fin Tube

June 24, 2014

Author(s)

Mark A. Kedzierski, ki-jung park

This report presents local convective boiling measurements in a micro-fin tube for R134a and two low global warming potential (GWP ) refrigerants: R1234yf/...

Uncertainty Quantification in Materials Modeling

June 24, 2014

Author(s)

Andrew M. Dienstfrey, Ronald F. Boisvert, Frederick R. Phelan Jr., Fadil Santosa, Alejandro Strachan, Stephen Christensen

N/A

Modelling the vertical UL 94 test: Competition and collaboration between melt dripping, gasification and combustion

June 24, 2014

Author(s)

Florian Kempel, Bernhard Schartel, Julio M. Marti, Kathryn Butler, Riccardo Rossi, Sergio R. Idelsohn, Anja Hofmann

An experimental and numerical investigation of the impact of the additives bisphenol A bis(diphenyl phosphate) (BDP) and polytetrafluoroethylene (PTFE) on the...

Photochemical Properties of trans-1-chloro-3,3,3-trifluoropropene (trans-CHCl=CHCF3): OH Reaction Rate Constant, UV and IR Absorption Spectra, GWP and ODP.

June 23, 2014

Author(s)

Vladimir L. Orkin, Larissa E. Martynova, Michael J. Kurylo III

Measurements of the rate constant for the gas phase reactions of OH radicals with trans-1-chloro-3,3,3-trifluoropropene (trans-CHCl=CHCF3) were performed using...

Measuring Freeze and Thaw Damage in Mortars Containing Deicing Salt Using a Low Temperature Longitudinal Guarded Comparative Calorimeter and Acoustic Emission (AE-LGCC)

June 23, 2014

Author(s)

Yaghoob Farnam, Dale P. Bentz, Aaron R. Sakulich, Daniel R. Flynn, Jason Weiss

Deicing salts are often applied to the surface of pavements and bridge decks in the winter to melt ice; thereby improving safety for the travelling public. In...

The Decline in Reported Smoking-Caused Wildfires

June 21, 2014

Author(s)

David T. Butry, Jeffrey P. Prestemon, Douglas S. Thomas

The number of smoking-caused wildfires has been falling nationwide. On national forests in 2011, smoking-caused wildfires represented only 10 % of their 1980...

Monitoring Process Variability for Stationary Process Data

June 20, 2014

Author(s)

Nien F. Zhang, Adam L. Pintar

Processes that arise naturally, e.g., from manufacturing or the environment, often exhibit complicated autocorrelation structures. When monitoring such a...

Computational Modeling and Validation of Aerosol Deposition in Ventilation Ducts

June 20, 2014

Author(s)

Kristopher J. Overholt, Jason Floyd, Ofodike A. Ezekoye

In fire models, the accurate prediction of aerosol/soot concentrations in the gas phase and aerosol/soot deposition thicknesses in the condensed phase is...

Standoff passive video imaging at 350 GHz with 251 superconducting detectors

June 20, 2014

Author(s)

Daniel T. Becker, James A. Beall, Hsiao-Mei Cho, Gene C. Hilton, Nicholas G. Paulter Jr., Carl D. Reintsema, Robert E. Schwall, Cale Gentry, Ilya Smirnov, Peter Ade, W D. Duncan, Mark Halpern, Carole Tucker

Millimeter wavelength radiation holds promise for detection of security threats at a distance, including suicide bomb belts and maritime threats in poor weather...

The Predictive Power of the Annellation Theory: The Case of the C32H16 Benzenoid Polycyclic Aromatic Hydrocarbons

June 20, 2014

Author(s)

Jorge O. Ona Ruales, Yosadara Ruiz-Morales

The positions of maximum absorbance for the p and β bands of the UV−vis spectra of the benzenoid polycyclic aromatic hydrocarbons, PAHs, with molecular formula...

The New Data Quality Task Group (DQTG)

June 20, 2014

Author(s)

Dan Bearden, Richard Beger

No abstract

Photoacoustic Spectrometer for Accurate, Continuous Measurements of Atmospheric Carbon Dioxide Concentration

June 19, 2014

Author(s)

Joseph T. Hodges, Zachary D. Reed, Brent A. Sperling, Roger D. van Zee, James R. Whetstone, Keith A. Gillis

We have developed a portable photoacoustic spectrometer that offers routine, precise and accurate measurements of atmospheric carbon dioxide mixing ratios. The...

Incoherent Quasielastic Neutron Scattering Study of the Relaxation Dynamics in Molybdenum-Oxide Based Keplerate Type Nanocages

June 19, 2014

Author(s)

Antonio Faraone, Emiliano Fratini, Somenath Garai, Achim Muller, Madhu Sudan Tyagi, Timothy Jenkins, Eugene Mamontov, Rick L. Paul, John R. Copley, Piero Baglioni

The single particle relaxation dynamics of hydrogen atoms in different oxomolybdate Keplerate type nanocages characterized by a (metal) 30 icosidodecahedron and...

Kinetics of the reactions of H and CH3 radicals and n-butane: An experimental design study using reaction network analysis

June 17, 2014

Author(s)

David A. Sheen, Jeffrey A. Manion

The oxidation of hydrocarbon fuels proceeds through the attack of small radicals such as H and CH3 on large molecules. These radicals abstract H atoms from the...

Visible-frequency asymmetric transmission devices incorporating a hyperbolic metamaterial

June 17, 2014

Author(s)

Ting Xu, Henri J. Lezec

A Velocity Divergence Constraint for Large-Eddy Simulation of Low-Mach Flows

June 17, 2014

Author(s)

Randall J. McDermott

The velocity divergence (rate of fluid volumetric expansion) is a flow field quantity of fundamental importance in low-Mach flows. It directly affects the local...

Sub-wavelength imaging and field mapping via electromagnetically induced transparency and Autler-Townes splitting in Rydberg atoms

June 16, 2014

Author(s)

Christopher L. Holloway, Joshua A. Gordon

Using a quantum-optics technique known as Electromagnetically Induced Transparency (EIT) and Autler-Townes splitting, we present a technique for sub-wavelength...

Interfacial Exchange Coupling in Fe/(Ga,Mn)As Bilayers

June 16, 2014

Author(s)

A. M. Alsmadi, Y. Choi, D.J. Keavney, K.F. Eid, Brian Kirby, X. Liu, J. Leiner, K. Tivakornsasithorn, M. Dobrowolska, J. K. Furdyna

We have carried out a systematical study of magnetic order and magnetic interlayer coupling in Fe/(Ga,Mn)As bilayers using superconducting quantum interference...

Supporting the industry sector of the metabolomics community: the remit of the Metabolomics Societys Industry Engagement Task Group

June 15, 2014

Author(s)

Dan Bearden, Mark Viant, Darren J. Creek

None

A New Separation Metric to Assess the Optimization of AF4 Separations of Polydisperse Nanoparticles

June 15, 2014

Author(s)

Wyatt N. Vreeland, Anne A. Galyean, James J. Filliben, Richard D. Holbrook, Dean C. Ripple, Howard S. Weinberg

The development of standardized and optimized methods to characterize polydisperse nanoparticles in complex matrixes is considered a critical component in many...

Stress mapping of micromachined polycrystalline silicon devices via confocal Raman microscopy

June 15, 2014

Author(s)

Grant A. Myers, Siddharth Hazra, Maarten de Boer, Chris A. Michaels, Stephan J. Stranick, Ryan P. Koseski, Robert F. Cook, Frank W. DelRio

Stress mapping of micromachined polycrystalline silicon devices with components in various levels of uniaxial tension was performed. Confocal Raman microscopy...

Defect and Microstructural Evolution in Thermally Cycled Cu Through-Silicon Vias

June 14, 2014

Author(s)

Chukwudi A. Okoro, James Marro, Yaw S. Obeng, Kathleen Richardson

In this study, the effect of thermal cycling on defect generation, microstructure, and the RF signal integrity of blind Cu through-silicon via (TSV) were...

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