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Displaying 4601 - 4625 of 74089
Jay H. Hendricks, Zeeshan Ahmed, Daniel Barker, Stephen Eckel, James A. Fedchak, Nikolai Klimov, Julia Scherschligt
At the core of the NIST on a Chip (NoAC) program is the idea that measurement technology can be developed to enable metrology to be done "outside the National Metrology Institute" by virtue of deployed and often miniaturized standards (that can also serve
Su P. Yu, Daniel Cole, Hojoong Jung, Gregory Moille, Kartik Srinivasan, Scott Papp
Complex systems are a proving ground for fundamental interactions between components and their collective emergent phenomena. Through intricate design, integrated photonics offers intriguing nonlinear inter- actions that create new patterns of light. In
David Jaramillo, Henry Jiang, Hayden Evans, Romit Chakraborty, Hiroyasu Furukawa, Craig Brown, Martin Head-Gordon, Jeffrey Long
The widespread implementation of H 2 as a fuel is currently hindered by the high pressures or cryogenic temperatures required to achieve reasonable storage densities. In contrast, the realization of materials that strongly and reversibly adsorb hydrogen at
Qihua Zhang, B. Klein, Norman A. Sanford, Ann Chiaramonti Debay
Laser-assisted atom probe tomography (APT) is the only known analytical method that can simultaneously provide sub-nm 3D spatial resolution and quantitative sensitivity approaching 1 ppm. APT has been applied with great success to the analysis of metals
Cryptographic technologies are used throughout government and industry to authenticate the source and protect the confidentiality and integrity of information that we communicate and store. The paper describes the impact of quantum computing technology on
Joshua A. Taillon, Thomas F. Bina, Raymond L. Plante, Marcus W. Newrock, Gretchen Greene, June W. Lau
This work introduces NexusLIMS, an electron microscopy laboratory information management system designed and implemented by the Office of Data and Informatics and the Materials Science and Engineering Division at NIST for a multi-user electron microscopy
To ensure NIST is taking a strategic and long-term approach to building a diverse workforce, explicit steps should be taken in hiring practices. The best practices described in this report provide a roadmap for Hiring Managers, whether hiring a part-time
Debra Ellisor, Rebecca Pugh, Nina Buzby, Michael Weaver, Melissa Foley
The National Institute of Standards and Technology (NIST) has been collaborating with the San Francisco Bay Estuary Institute (SFEI) since 2009, providing biobanking services at the NIST Biorepository in Charleston, South Carolina in support of their
Antonio Possolo, Amanda Koepke, David Newton, Michael R. Winchester
This contribution describes a Decision Tree intended to guide the selection of statistical models and data reduction procedures in key comparisons (KCs). The Decision Tree addresses a specific need of the Inorganic Analysis Working Group (IAWG) of the
We acquire ferromagnetic resonance spectra for an out-of-plane magnetized yttrium iron garnet sample with a vector network analyzer at microwave frequencies ranging from 4.2 GHz to 5.2 GHz. The applied static magnetic field varies from approximately 253.6
Ignitability of structural components due to ember accumulation is a common cause of structural fires in wildland urban interface (WUI) communities. To fire harden structures in WUI communities, it is important to quantitatively predict the ember
Dan Kuester, Yao Ma, Dazhen Gu, Adam Wunderlich, Jason Coder, Joseph R. Mruk
We summarize a few key spectrum sensing measurement challenges and recent advances. Laboratory tests of sensing are complicated by their inseparable and often imbedded role in modern hardware. Results are difficult to calibrate because physical parameters
Hamish Small, scientist extraordinaire, is best known as the inventor of both ion chromatography and hydrodynamic chromatography (HDC). The latter has experienced a renaissance during the last decade- plus, thanks principally to its coupling to a
Edward Garboczi, Ann Chiaramonti Debay, Somen Baidya, Ahmed M. Hassan, Andrew Sharits, Jay D. Goguen, Thomas Lafarge, Mikolas Melius
Shape is a critical property, besides size and material composition, which has a strong effect on the optical scattering characteristics of a particle. In this work, we computationally study how the measured three-dimensional shapes of lunar regolith
Samuel Berweger, Hanyu Zhang, Prasana Sahoo, Benjamin Kupp, Jeffrey Blackburn, Elisa Miller, Thomas Mitchell (Mitch) Wallis, Dmitri Voronine, Pavel Kabos, Sanjini Nanayakkara
The optical and electronic properties of 2D semiconductors are intrinsically linked via the strong interactions between optically excited bound species and free carriers. Here we use near-field scanning microwave microscopy (SMM) to image spatial
The discovery of new materials for separating ethane (C 2H 6) from ethylene (C 2H 4) by adsorption is a critical enterprise in the chemical industry. It still remains as a daunting challenge to target both high C 2H 6 adsorption capacity and gas
Laser Powder Bed Fusion (LPBF) is an additive manufacturing process where laser power is applied to fuse the spread powder and fabricate industrial parts in a layer by layer fashion. Despite its great promise in fabrication flexibility, print quality has
In January 2000, Noah Kalina began taking a photograph of himself every day – and has continued for more than 20 years. A time-lapse video of his images can be seen online: EveryDay. These images, and images from similar projects, provide us with
Bo Yuan, Nicholas Butch, Guangyong Xu, Barry Winn, J. P. Clancy, Young-June Kim
We report neutron scattering study of low energy magnetic excitations in S =1/2 quantum magnet Bi 2CuO 4 with a tetragonal lattice structure. Our observation of a spin flop transition at a small field of 0.4 Tesla indicates the existence of a small
Lisa Borsuk, Carolyn R. Steffen, Kevin M. Kiesler, Peter Vallone, Katherine Gettings
The National Institute of Standards and Technology (NIST) U.S. population sample set of unrelated individuals was used to determine allele and haplotype frequencies for seven X-chromosome short tandem repeat (STR) loci in four linkage groups. DXS7132
The costs/benefits associated with investing in advanced maintenance techniques is not well understood. Using data collected from manufacturers, we estimate the national losses due to inadequate maintenance and make comparisons between those that rely on