Journals

A detector combining quantum and thermal primary radiometric standards in the same artefact

November 20, 2014

Author(s)

Malcolm G. White, Nathan A. Tomlin, Jarle Gran

We present the concept of a dual mode cryogenic detector, utilising a predictable quantum efficient silicon photodiode, and demonstrate the behaviour of the...

Characterization of AlgMsp, an Alginate Lyase from Microbulbifer sp. 6532A

November 19, 2014

Author(s)

Jeffrey W. Hudgens, Steven M. Swift, Ryan D. Heselpoth, Patrick M. Bales, Daniel C. Nelson

Alginate is a polysaccharide produced by certain seaweeds and bacteria that consists of mannuronic acid and guluronic acid residues. Seaweed alginate is used in...

Particle Moment Canting in CoFe₂O₄ Nanoparticles

November 19, 2014

Author(s)

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

Polarization-analyzed small-angle neutron scattering methods are used to determine the spin morphology in high crystalline anisotropy, 11 nm diameter CoFe 2O 4...

High Resolution Imagery Collection for Post-Disaster Studies Utilizing Unmanned Aircraft Systems (UAS)

November 19, 2014

Author(s)

Stuart M. Adams, Marc L. Levitan, Friedland J. Carol

This paper examines the use of unmanned aircraft systems (UAS) to capture imagery for use in post-disaster field studies at the neighborhood and individual...

Preface

November 19, 2014

Author(s)

Daniel G. Friend, Marcia L. Huber, Neil T. Wright

This is a preface for a special issue of the International Journal of Thermophysics that contains papers presented at the 18th Symposium on Thermophysical...

Homogeneous Linewidth Narrowing of the Charged Exciton via Nuclear Spin Screening in an InAs/GaAs Quantum Dot Ensemble

November 18, 2014

Author(s)

Galan A. Moody, Mingming M. Feng, Corey A. McDonald, Richard P. Mirin, Kevin L. Silverman

In semiconductor quantum dots, the electron hyperfine interaction with the nuclear spin bath is the leading source of spin decoherence at cryogenic temperature...

Origin of the Charge Gap in LaMnPO

November 18, 2014

Author(s)

D. E. McNally, J. W. Simonson, K. W. Post, Z. P. Yin, M. Pezzoli, G. J. Smith, V. Leyva, C. Marques, L. DeBeer-Schmitt, A. I. Kolesnikov, Yang Zhao, Jeffrey W. Lynn, D. N. Basov, G. Kotliar, M. C. Aronson

We present inelastic neutron scattering and magnetization measurements of the antiferromagnetic insulator LaMnPO that are well described by a Heisenberg spin...

Photon Number Resolution Enables Quantum Receiver for Realistic Coherent Optical Communications

November 17, 2014

Author(s)

Francisco E. Becerra Chavez, Jingyun Fan, Alan Migdall

Quantum-enhanced measurements can provide information about the properties of a physical system with sensitivities beyond what is fundamentally possible with...

A rational strategy for characterization of nanoscale particles by asymmetric flow field-flow fractionation

November 16, 2014

Author(s)

Julien C. Gigault, John M. Pettibone, Charlene E. Schmitt, Vincent A. Hackley

This tutorial proposes a comprehensive and rational measurement strategy that provides specific guidance for the application of asymmetric-flow field flow...

Structure and Magnetic Properties of the α-NaFeO₂-Type Honeycomb Compound Na₃Ni₂BiO₆

November 15, 2014

Author(s)

Elizabeth M. Seibel, J. H. Roudebush, Hui Wu, Qingzhen Huang, Mazhar N. Ali, Huiwen Ji, R. J. Cava

We present the structure and magnetic properties of Na 3Ni 2BiO 6, which is an ordered variant of the α-NaFeO 2 structure type. This layered compound has a 2:1...

Broadband Noise Limit in the Photodetection of Ultralow Jitter Optical Pulses

November 14, 2014

Author(s)

Franklyn J. Quinlan, W. Sun, Tara M. Fortier, Jean-Daniel Deschenes, Yang Fu, Scott A. Diddams, Joe Campbell

Applications with optical atomic clocks and precision timing often require the transfer of optical frequency references to the electrical domain with extremely...

A study of the adhesive foot of the gecko

November 14, 2014

Author(s)

Elmar Kroner, Chelsea S. Davis

In recent years, hundreds of scientific studies have been published regarding gecko-inspired adhesives. The primary reason for this increasing interest lies in...

Hydrocarbon Flame Inhibition by C3H2F3Br (2-BTP)

November 14, 2014

Author(s)

Valeri I. Babushok, Gregory T. Linteris, Donald R. Burgess Jr., Patrick T. Baker

The kinetic mechanism of hydrocarbon flame inhibition by the potential halon replacement 2-BTP has been assembled, and is used to study its effects on premixed...

PBTI-Induced Random Timing Jitter in Circuit-Speed Random Logic

November 13, 2014

Author(s)

Jiwu Lu, Canute I. Vaz, Guangfan Jiao, Jason P. Campbell, Jason T. Ryan, Kin P. Cheung, Gennadi Bersuker, Chadwin D. Young

Accurate reliability predictions of real world digital logic circuits rely heavily on the relevancy of device level testing. In the case of bias temperature...

Accurate determination of the size distribution for polydisperse, cationic metallic nanomaterials by asymmetric-flow field flow fractionation

November 13, 2014

Author(s)

Julien C. Gigault, Thao M. Nguyen, Michael Zachariah, Vincent Hackley

In this work we have developed and validated a methodology for determining the size distribution in polydisperse cationic nanoparticle (NP) samples using...

Toward Metamodels for Composable and Reusable Additive Manufacturing Process Models

November 13, 2014

Author(s)

Paul W. Witherell, Shaw C. Feng

In this paper, we advocate for a more harmonized approach to model development for additive manufacturing (AM) processes, through classification and...

Study of the Impact of Operation Distance of Outdoor Portable Generators under Different Weather Conditions

November 13, 2014

Author(s)

Leon Wang, Steven Emmerich, Cheng-Chun Lin

The U.S. Centers for Disease Control and Prevention (CDC) has reported that up to half of non-fatal monoxide (CO) poisoning incidents during the hurricane...

Vapor-phase (p, , T, x) behavior and virial coefficients for the (methane + propane) system

November 12, 2014

Author(s)

Mark O. McLinden, Markus Richter

The (p, ρ, T, x) behavior of three (methane + propane) mixtures was measured with a two-sinker magnetic suspension densimeter over the temperature range of (248...

Influence of the central mode and soft phonon on the microwave dielectric loss near the strain-induced ferroelectric phase transitions in Sr_n+1uTi_nuO_3n+1u*

November 12, 2014

Author(s)

V. Goian, S. Kamba, D Nuzhnyy, Nathan Orloff, T. Birol, C.-H Lee, D. G. Schlom, James Booth

Recently, Lee et al. [1] used1% tensile strain to induce a ferroelectic instability in thin films of Srdn+1uTi nuO 3n+1u (n=1-6) phases. They showed that the...

The Influence of Experimental Parameters and Specimen Geometry on the Mass Spectra of Copper During Pulsed-Laser Atom-Probe Tomography

November 12, 2014

Author(s)

Ratna P. Kolli, Frederick Meisenkothen

We have studied the influence of experimental factors and specimen geometry on the quality of the mass spectra in copper (Cu) during pulsed-laser atom-probe...

Nonproportionality in the scintillation light yield of bismuth germanate

November 11, 2014

Author(s)

Thomas R. Gentile, M J. Bales, H Breuer, T E. Chupp, Kevin J. Coakley, R L. Cooper, Jeffrey S. Nico, B. O'Neill

We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV...

A thermodynamic investigation of the cellulose allomorphs: cellulose(am), cellulose I¿(cr), cellulose II(cr), and cellulose III(cr)

November 11, 2014

Author(s)

Robert N. Goldberg, Jacob Schliesser, Ashutosh Mittal, Stephen R. Decker, Ana Filipa L. Santos, Vera L. Freitas, Aaron Urbas, Brian Lang, Christian Heisse, Maria D. Ribeiro da Silva, Brian F. Woodfield, Rui Katahira, Wei Wang, David K. Johnson

The thermochemistry of samples of amorphous cellulose, cellulose I, cellulose II, and cellulose III was studied by using oxygen bomb calorimetry, solution...

Performance Improvements for the NIST 1 V Josephson arbitrary waveform synthesizer

November 10, 2014

Author(s)

Samuel P. Benz, Steven B. Waltman, Anna E. Fox, Paul D. Dresselhaus, Alain Rufenacht, Logan A. Howe, Robert E. Schwall, Nathan E. Flowers-Jacobs

The performance of the NIST Josephson arbitrary waveform synthesizer has been improved such that it generates a root-mean-square (RMS) output voltage of 1 V...

The Multiple Origins of Broadening in Near-edge X-ray Spectra of Nitrogen Compounds

November 10, 2014

Author(s)

John T. Vinson, Terrence J Jach, W. T. Elam, J. D. Denlinger

A comparison of the N Kα emission spectrum of crystalline ammonium nitrate to molecular orbital calculations reveals a unique observation: the peak associated...

Measurement and Calculation of Absolute Single and Double Charge Exchange Cross Sections for O6+ Ions at 1.17 keV/u and 2.33 keV/u Impacting He and H2

November 10, 2014

Author(s)

J. R. Machacek, D. P. Mahapatra, D. R. Schultz, Yuri Ralchenko, A. Chutjian, J. Simcic, S. M. Madzunkov, R. J. Mawhorter

Absolute single and double charge-exchange (CE) cross sections for the astrophysically-prominent O6+ ion with the atomic and molecular targets He and H2 are...

Molecular dynamics simulation of thermal ripples in graphene with bond-order-informed harmonic constraints

November 7, 2014

Author(s)

Alexander Y. Smolyanitsky

We describe the results of atomistic molecular dynamics simulations of thermal rippling in graphene, obtained with a simple, low computational cost, harmonic...

Tunable, stable source of femtosecond pulses near 2 υm via supercontinuum of an Erbium mode-locked laser

November 7, 2014

Author(s)

Andrew M. Klose, Gabriel G. Ycas, Daniel I. Maser, Scott A. Diddams

Ultrashort pulses of light in the 2 υm region were generated using supercontinuum broadening from an erbium fiber system. The output of a mode-locked erbium...

Molecular Basis for the High CO₂ Adsorption Capacity in Chabazite Zeolites

November 7, 2014

Author(s)

Trong D. Pham, Matthew Ross Hudson, Craig Brown, Raul F. Lobo

The structure-property relationship for CO 2 adsorption in Li-, Na-, K-CHA (Si/Al = 5 and = 12), and pure silica chabazite (Si-CHA) zeolites was investigated by...

Broad-Band Microwave-Based Metrology Platform Development: Demonstration of In-Situ Failure Mode Diagnostic Capabilities for Integrated Circuit Reliability Analyses

November 7, 2014

Author(s)

Lin You, Chukwudi A. Okoro, Jungjoon Ahn, Joseph Kopanski, Yaw S. Obeng, Rhonda R. Franklin

In this paper, we discuss the use of broadband high frequency electromagnetic waves (RF) to non- destructively identify, classify and characterize performance...

Line shapes, positions and intensities of water transitions near 1.28 microns

November 7, 2014

Author(s)

Vincent T. Sironneau, Joseph T. Hodges

We present measurements of approximately 70 isolated, self-broadened, water vapor lines which are assigned to the (1,0,1)(0,0,0), (0,0,2)(0,0,0), (1,2,0)(0,0...