Journals

Homogenization Kinetics of a Nickel-based Superalloy Produced by Powder Bed Fusion Laser Sintering

January 26, 2017

Author(s)

Fan Zhang, Lyle E. Levine, Andrew J. Allen, Eric Lass, Sudha Cheruvathur, Mark R. Stoudt, Maureen E. Williams, Yaakov S. Idell, Carelyn E. Campbell

Additively manufactured (AM) metal components often exhibit fine dendritic microstructures and elemental segregation due to the initial rapid solidification and...

Spatial variation in perfluoroalkyl acids in a population of wild American alligators (Alligator mississippiensis) at Merritt Island National Wildlife Refuge (MINWR) surrounding the Kennedy Space Center (KSC)

January 26, 2017

Author(s)

John Bowden, Jacqueline T. Bangma, Martin Jones, Russell H. Lowers, Frances Nilsen, Jessica L. Reiner, Thomas R. Rainwater, Stephen E. Somerville, Louis J. Guillette Jr.

This study aimed to quantify fourteen perfluoroalkyl acids (PFAAs) in the plasma of a population of alligators located at Merritt Island national Wildlife...

Neutron Interferometer Crystallographic Imperfections and Gravitationally Induced Quantum Interference Measurements

January 25, 2017

Author(s)

Michael G. Huber, Muhammad D. Arif, Dimitry A. Pushin, A.R. Young, B. Heacock, Robert Haun

Dynamical diffraction leads to an interesting, unavoidable set of interference effects for neutron interferometers. This experiment studies the interference...

Temperature dependence of electron density and electron-electron interactions in monolayer epitaxial graphene grown on SiC

January 25, 2017

Author(s)

Chieh W. Liu, Chiashain Chuang, Yanfei Yang, Randolph Elmquist, Yi-Ju Ho, Hsin Y. Lee, Chi-Te Liang

We report carrier density measurements and electron-electron (e-e) interactions in monolayer epitaxial graphene grown on SiC. The temperature (T)-independent...

A New Generation of Magnetoencephalography: Room Temperature Measurements using Optically-Pumped Magnetometers

January 25, 2017

Author(s)

Elena Boto, Sofie S. Meyer, Vishal Shah, Orang Alem, Svenja A. Knappe, Peter Kruger, Mark Fromhold, Peter G. Morris, Richard W. Bowtell, Gareth R. Barnes, Matthew J. Brookes, Mark Lim

Significant advances in the field of quantum sensing mean that magnetic field detectors, operating at room temperature, are now able to achieve sensitivity...

Static and Time-Resolved Terahertz Measurements of Photoconductivity in Solution-Deposited Ruthenium Oxide Nanofilms

January 25, 2017

Author(s)

Brian Alberding, Paul A. Desario, Adam D. Dunkelberger, Debra R. Rolison, Jeffrey C. Owrutsky, Edwin J. Heilweil

Thin film Ruthenium Oxide (RuO2) is a promising alternative material as a conductive electrode in electronic applications because its rutile crystalline form is...

Exactly soluble model of boundary degeneracy

January 25, 2017

Author(s)

Sriram Ganeshan, Alexey Gorshkov, Victor Gurarie, Victor Galitski

Separation of Double-Wall Carbon Nanotubes by Electronic Type and Diameter

January 24, 2017

Author(s)

Jason K. Streit, Stephanie Lam, Yanmei Piao, Angela R. Hight Walker, Jeffrey A. Fagan, Ming Zheng

In this work, we introduce a new procedure for the efficient isolation and subsequent separation of double-wall carbon nanotubes (DWCNTs). A simplified rate...

Comprehensive atomic wavelengths, energy levels and hyperfine structure for singly-ionized iron-group elements

January 23, 2017

Author(s)

Gillian Nave, Craig J. Sansonetti, Keeley I. Townley-Smith, J C. Pickering, Florence Liggins, Anne P. Thorne, Christian Clear

We summarize recent work at the National Institute of Standards and Technology and Imperial College London on wavelengths, hyperfi ne structure, energy levels...

Characteristics of Resistive Memory Read Fluctuations in Endurance Cycling

January 23, 2017

Author(s)

David M. Nminibapiel, Dmitry Veksler, Pragya R. Shrestha, Jihong Kim, Jason P. Campbell, Jason T. Ryan, Helmut Baumgart, Kin P. Cheung

We report on new fluctuation dynamics of the high resistance state of Hafnia-based RRAM devices after RESET. We observe that large amplitude fluctuations occur...

Imaging and Analysis of Encapsulated Objects through Self-Assembled Electron and Optically Transparent Graphene Oxide Membrane

January 23, 2017

Author(s)

Alexander Yulaev, Alexey Lipatov, Annie Xi Lu, Alexander Sinitskii, Leite Marina, Andrei Kolmakov

We demonstrate a technique for facile adhesion and encapsulation of micro- and nano objects on arbitrary substrates, stencils, and micro structured surfaces by...

Thermal transport in dimerized harmonic lattices: Exact solution, crossover behavior, and extended reservoirs

January 23, 2017

Author(s)

Chih-Chun Chien, Said Kouachi, Kirill Velizhanin, Yonatan Dubi, Michael P. Zwolak

We present a method for calculating analytically the thermal conductance of a classical harmonic lattice with both alternating masses and nearest-neighbor...

Collaborative guarded-hot-plate tests between the Laboratoire national de métrologie et dessais and the National Institute of Standards and Technology

January 20, 2017

Author(s)

Robert R. Zarr, William F. Guthrie, Bruno Hay, Alain Koenen

A collaborative study to compare the long-term measurement performance between guardedhot- plate facilities at the Laboratoire national de métrologie et d...

Magnetic Properties and Applications of Engineered Nanomaterials

January 20, 2017

Author(s)

Cindi L. Dennis

This chapter will review the fundamentals of nanomagnetism, including its origins, the different types, and their response at the nanoscale, followed by...

Least Squares Moving-Window Spectral Analysis

January 20, 2017

Author(s)

Young J. Lee

Least squares regression is proposed as a moving-windows method for analysis of a series of spectra acquired as a function of external perturbation. The least...

First high-resolution analysis of the nu1, nu3, and nu1+nu3 bands of sulfur dioxide 33S16O2

January 20, 2017

Author(s)

Walter J. Lafferty, Jean-Marie Flaud, T. A. Blake

Fourier transform spectra of sulfur dioxide 33S16O2 have been recorded in the 8.0 µm and 4.0 µm spectral regions at a resolution of 0.0015 cm-1 using a Bruker...

Improved Cr II log(gf) values and abundance determinations in the photospheres of the Sun and metal-poor star HD 84937

January 20, 2017

Author(s)

James E. Lawler, Chris Sneden, Gillian Nave, E. A. Den Hartog, N Emrahoglu, John J. Cowan

New emission branching fraction (BF) measurements for 183 lines of the second spectrum of chromium (Cr II) and new radiative lifetime measurements from laser...

Non-Hermitian engineering of synthetic saturable absorbers for applications in photonics

January 20, 2017

Author(s)

A. Rahman, M H. Teimourpour, Kartik Srinivasan, Ramy El-Ganainy

We introduce a new type of synthetic saturable absorber based on quantum-inspired photonic arrays whose linear light transport characteristics can be derived...

Nanointerface-Driven Reversible Hydrogen Storage in the Nanoconfined Li-N-H System

January 20, 2017

Author(s)

Brandon C. Wood, Vitalie Stavila, Natchapol Poonyayant, Tae-Wook Heo, Keith G. Ray, Leonard E. Klebanoff, Terrence J. Udovic, Jonathan R. I. Lee, Natee Angboonpong, Joshua D. Sugar, Pasit Pakawatpanurut

A microfabricated optically-pumped magnetic gradiometer

January 18, 2017

Author(s)

Abigail R. Perry, Sean P. Krzyzewski, John E. Kitching, S. Geller, Sheng D., Svenja A. Knappe

We report on the development of a microfabricated atomic magnetic gradiometer based on optical spectroscopy of alkali atoms in the vapor phase. The gradiometer...

Plastic Deformation of Polymer Blends as a Means to Achieve Stretchable Organic Transistors

January 17, 2017

Author(s)

Tianlei Sun, Joshua Scott, Ming Wang, Regis J. Kline, Guillermo Bazan, Brendan T. O'Connor

Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity

January 15, 2017

Author(s)

Dustin A. Hite, Kyle S. McKay, Shlomi Salman Kotler, Dietrich G. Leibfried, David J. Wineland, David P. Pappas

Electric-field noise from the surfaces of ion-trap electrodes couples to the ions charge causing heating of the ions motional modes. This heating limits the...

Application of 2D-NMR with Room Temperature NMR Probes for the Assessment of the Higher Order Structure of Filgrastim

January 15, 2017

Author(s)

Robert G. Brinson, Houman Ghasriani, Derek Hodgson, Adams Kristie, Ian McEwen, Kang Chen, Yves Aubin, John P. Marino

The higher order structure (HOS) of biotherapeutics is a critical quality attribute that can be evaluated by nuclear magnetic resonance (NMR) spectroscopy at...

Bench-Scale Test Facility for Evaluating the Imaging Performance of Thermal Imagers for Fire Service Applications

January 15, 2017

Author(s)

Sung C. Kim, Anthony Hamins

The present study investigates the characteristics of obscuring media inside an optical smoke cell, which is developed as a bench-scale testing facility for the...

Activity Model for Homogenization of Data Sets in Laser-based Powder Bed Fusion

January 14, 2017

Author(s)

Shaw C. Feng, Paul W. Witherell, Duck B. Kim

Additive Manufacturing (AM) processes are the integration of many different science and engineering-related disciplines, such as material metrology, design...

Engineering Approach for Designing a Thermal Test of Real-scale Steel Beam Exposed to Localized Fire

January 13, 2017

Author(s)

Chao Zhang, Lisa Y. Choe, John L. Gross, Selvarajah Ramesh, Matthew F. Bundy

The National Institute of Standards and Technology (NIST) has completed construction of a new facility, the National Fire Research Laboratory (NFRL), which...

Measurement of Uranium-236 in Particles by Secondary Ion Mass Spectrometry

January 12, 2017

Author(s)

David S. Simons, John D. Fassett

The determination of the relative isotopic abundance by secondary ion mass spectrometry of 236U in uranium-containing material is complicated by the presence of...

Evaluation of Method-Specific Extraction Variability for the Measurement of Fatty Acids in a Candidate Infant/Adult Nutritional Formula Reference Material

January 12, 2017

Author(s)

Benjamin J. Place

To address community needs, the National Institute of Standards and Technology (NIST) has developed a candidate Standard Reference Material (SRM) for infant...

Tricritical Point of the f-Electron Antiferromagnet USb₂ Driven by High Magnetic Fields

January 12, 2017

Author(s)

Ryan L. Stillwell, I Lin NMN Liu, N. Harrison, M. Jaime, J. R. Jeffries, Nicholas Butch

In pulsed magnetic fields up to 65T and at temperatures below the Neel transition, our magnetization and magnetostriction measurements reveal a field-induced...

Growth of Monolayer Graphene on Nanoscale Copper-Nickel Alloy Thin Films

January 11, 2017

Author(s)

Jason J. Gorman, Michael Cullinan, Joon H. Cho

The integration of graphene into nanoscale electrical and mechanical devices is often limited by the ability to grow monolayer graphene on extremely thin copper...