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Search Publications

NIST Authors in Bold

Displaying 15601 - 15625 of 73697

Data Science Research Program at NIST Information Access Division

August 4, 2016
Author(s)
Bonnie J. Dorr, Craig Greenberg, Peter Fontana, Mark A. Przybocki, Marion Le Bras, Cathryn A. Ploehn, Oleg Aulov, Edmond J. Golden III, Wo L. Chang
We examine foundational issues in data science including current challenges, basic research questions, and expected advances, as the basis for a new Data Science Initiative and evaluation series, introduced by the Information Access Division at the

Deuterium Labeling Together with Contrast Variation Small-Angle Neutron Scattering Suggests How Skp Captures and Releases Unfolded Outer Membrane Proteins

August 4, 2016
Author(s)
Nathan R. Zaccai, Clifford W. Sandlin, James T. Hoopes, Joseph E. Curtis, Patrick J. Fleming, Karen G. Fleming, Susan T. Krueger
In gram¿negative bacteria, the chaperone protein Skp forms specific and stable complexes with membrane proteins as these are transported across the periplasm to the outer membrane. The jellyfish¿like architecture of Skp is similar to the eukaryotic and

Evaluating the Effectiveness of BEN in Locating Different Types of Software Fault

August 4, 2016
Author(s)
Raghu N. Kacker, David R. Kuhn, Jagan Chandrasekaran, Yu Lei
Debugging or fault localization is one of the most challenging tasks during software development. Automated fault localization tools have been developed to reduce the amount of effort and time software developers have to spend on debugging. In this paper

High Fidelity Universal Gate Set for 9Be+ Ion Qubits

August 4, 2016
Author(s)
John P. Gaebler, Ting R. Tan, Yong Wan, Yiheng Lin, Ryan S. Bowler, Adam C. Keith, Scott Glancy, Kevin Coakley, Emanuel Knill, Dietrich Leibfried, David J. Wineland
We report high-fidelity laser-beam-induced quantum logic gates on qubits comprised of hyperfine states in 9Be+ ions, achieved in part through a combination of improved laser beam quality and control and improved state preparation. We demonstrate single

Pseudo-exhaustive Testing of Attribute Based Access Control Rules

August 4, 2016
Author(s)
David R. Kuhn, Chung Tong Hu, David F. Ferraiolo, Raghu N. Kacker, Yu Lei
Access control typically requires translating policies or rules given in natural language into a form such as a programming language or decision table, which can be processed by an access control system. Once rules have been described in machine

Ultra-Dense Networks: Survey of State of the Art and Future Directions

August 4, 2016
Author(s)
Wei Yu, Hansong Xu, Hanlin Zhang, David W. Griffith, Nada T. Golmie
Abstract—Within the foreseeable future, the growing number of mobile devices, and their diversity, will challenge the current network architecture. Furthermore, users expect higher data rates, lower latency, lower packet drop rates, etc. in future wireless

Variation of Emittivity with Powder Bed Fusion Build Parameters

August 4, 2016
Author(s)
Jarred C. Heigel, Brandon M. Lane, Shawn P. Moylan
Common approaches to process monitoring of powder bed fusion rely heavily on optical measurements. These measurements can be used to verify powder spreading, assess the quality of each layer, and to measure process temperatures. In regards to the latter

An Antimony Selenide Molecular Ink for Flexible Broadband Photodetectors

August 3, 2016
Author(s)
Ratan K. Debnath, MD R. Hasan, Arunima Singh, Vladimir P. Oleshko, Shiqi Guo, Asha Rani, Abhishek Motayed, Nhan V. Nguyen, Albert Davydov
The need for low-cost high-performance broadband photon detection with sensitivity in the near infrared (NIR) has driven interest in new materials that combine high absorption with traditional electronic infrastructure (CMOS) compatibility. Here, we

Eu 3+ -Doped Wide Band Gap Zn 2 SnO 4 Semiconductor Nanoparticles: Structure and Luminescence

August 3, 2016
Author(s)
Mirjana NMN Dimitrievska, Tamara B. Ivetic, Alexander P. Litvinchuk, Andrew Fairbrother, Bojan B. Miljevic, Goran R. Strbac, Alejandro Perez-Rodriguez, Svetlana R. Lukic-Petrovic
Nanocrystalline Zn 2SnO 4powders doped with Eu 3+ ions were synthesized via a mechanochemical solid-state reaction method followed by post annealing in air at 1200 °C. X-ray diffraction (XRD), energy-dispersive X-ray (EDX), Raman and photoluminescence (PL)

Quantum Electromechanics on Silicon Nitride Nanomembranes

August 3, 2016
Author(s)
Johannes Fink, Mahmoud Kalaee, Alessandro Pitanti, Richard Norte, Lukas Heinzle, Marcelo I. Davanco, Kartik Srinivasan, Oskar Painter
We present a platform based upon silicon nitride nanomembranes for integrating superconducting microwave circuits with planar acoustic and optical devices such as phononic and photonic crystals. Utilizing tensile stress and lithographic patterning of a

Morphology-insensitive Performance Facilitates Transition from Spin-Coating to Roll-to-Roll Coating For High-Performance, Solution-Processed Solar Cells

August 2, 2016
Author(s)
Lee J. Richter, Jonathan Downing, Sebastian Engmann, Hyun W. Ro, Andrew A. Herzing, Dean M. DeLongchamp, Subhrangsu Mukherjee, Harald Ade, Maged Addelsamie, Aram Amassian, Yuhang Liu, He Yan
Solution processing via roll-to-roll (R2R) coating promises a low cost, low thermal-budget, sustainable revolution for the production of solar cells. Yet virtually all high performance solution processed research cells have been demonstrated by spin

Reversible adsorption kinetics of near surface dimer colloids

August 2, 2016
Author(s)
Paul NMN Salipante, Steven D Hudson
We investigate the effect of shape on reversible adsorption kinetics using colloidal polystyrene dimers near a solid glass surface as a model system. The interaction between colloid and wall is tuned using electrostatic, depletion, and gravity forces to

Role of e-Collaborations in Scaling-Up Materials Innovation

August 2, 2016
Author(s)
Surya R. Kalidindi, David Brough, Sheng Yen Li, Ahmet Cecen, Aleksandr L. Blekh, Faical Y. Congo, Carelyn E. Campbell
The goal of the recently announced materials innovation initiatives such as the Materials Genome Initiative (MGI) and the Integrated Computational Materials Engineering (ICME) approach is to substantially reduce the time and cost of materials design and

Charge Carrier Dynamics and Mobility Determined by Time-Resolved Terahertz Spectroscopy on Films of Nano-to-Micrometer-Sized Colloidal Tin(II) Monosulfide

August 1, 2016
Author(s)
Brian Alberding, Adam Biacchi, Angela R. Hight Walker, Edwin J. Heilweil
Tin(II) monosulfide (SnS) is a semiconductor material with an intermediate band gap, high absorption coefficient is the visible range, and consists of earth abundant, non-toxic elements. For these reasons, SnS has generated much interest for incorporation
Displaying 15601 - 15625 of 73697
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