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Search Publications

NIST Authors in Bold

Displaying 11601 - 11625 of 13225

Forensic Handwriting Examination and Human Factors: Improving the Practice Through a Systems Approach

February 17, 2020
Author(s)
Melissa Taylor, Carolyne Bird, Brett Bishop, Ted Burkes, Michael P. Caligiuri, Bryan Found, Wesley P. Grose, Lauren R. Logan, Kenneth E. Melson, Mara L. Merlino, Larry S. Miller, Linton Mohammed, Jonathan Morris, John Paul Osborn, Nikola Osborne, Brent Ostrum, Christopher P. Saunders, Scott A. Shappell, H. David Sheets, Sargur N. Srihari, Reinoud D. Stoel, Thomas W. Vastrick, Heather E. Waltke, Emily J. Will
… handwriting examination is not immune to errors. In June 2015, the US National Institute of Standards and Technology convened the Expert Working Group for Human Factors in Handwriting Examination to conduct a scientific assessment …

Demonstration of 220/280 GHz Multichroic Feedhorn-Coupled TES Polarimeter

January 3, 2020
Author(s)
Samantha L. Walker, Carlos E. Sierra, Jason E. Austermann, James A. Beall, Daniel T. Becker, Bradley J. Dober, Shannon M. Duff, Gene C. Hilton, Johannes Hubmayr, Jeffrey L. Van Lanen, Jeff McMahon, Sara M. Simon, Joel N. Ullom, Michael R. Vissers
… microwave background. Each pixel couples polarized light in two linear polarizations by use of a planar orthomode … senses power via four TES bolometers, one for each band in each linear polarization. Previous designs of this … passbands from 27 to 220 GHz; we now demonstrate this technology at frequencies up to 315 GHz. Observational …

NIST Big Data Interoperability Framework: Volume 8, Reference Architecture Interfaces

October 21, 2019
Author(s)
Wo L. Chang, Gregor von Laszewski
… is a term used to describe extensive datasets, primarily in the characteristics of volume, variety, velocity, and/or … of data is outpacing scientific and technological advances in data analytics. To advance progress in Big Data, the NIST Big Data Public Working Group (NBD-PWG) …

A photonic pH sensor based on photothermal spectroscopy

September 12, 2019
Author(s)
Zeeshan Ahmed, Nathan J. Castro, Matthew R. Hartings
… Using anthocyanins (pH- sensitive chromophores found in many plants), we are able to correlate visible light … by a solution of anthocyanins to heat released and changes in FBG signal over a pH range of 2.5 to 10. We tested the … increases over the observed signal at the same pH in solution. Our results indicate that this platform is …

The Design and Development of a Tabletop Kibble Balance at NIST

May 23, 2019
Author(s)
Leon S. Chao, Frank C. Seifert, Darine El Haddad, Julian Stirling, David B. Newell, Stephan Schlamminger
… 1-kg level with uncertainties on the order of a few parts in 10^8. However, upon fixing the Planck constant,mass can be … benchmark. At the National Institute of Standards and Technology (NIST), a tabletop-sized Kibble balance (KIBB-g1) … range with uncertainties on the order of a few parts in 10^6 is currently under development. …

Quantum Frequency Conversion of a Quantum Dot Single-Photon Source on a Nanophotonic Chip

May 20, 2019
Author(s)
Anshuman Singh, Qing Li, Shunfa Liu, Ying Yu, Xiyuan Lu, Christian Schneider, Sven Hofling, John Lawall, Varun Verma, Richard Mirin, Sae Woo Nam, Jin Liu, Kartik Srinivasan
… quantum information science. However, their distribution in emission wavelength, due to inhomogeneous broadening … nanophotonic chip. Single photons from a quantum dot in a micropillar cavity are shifted in wavelength with an on-chip conversion efficiency 12 %, …

Ultrafast Optical Pulse Shaping using Dielectric Metasurfaces

May 2, 2019
Author(s)
Shawn M. Divitt, Wenqi Zhu, Cheng Zhang, Henri Lezec, Amit Agrawal
… limit of optical pulse shaping. Remarkable progress in mode-locked lasers and chirped pulse amplifiers promising … pulse-shapers are expected to have significant impact in the field of ultrafast science and technology. …

Industrial Wireless End-to-End Measurements and Impacts in a Gas Sensing Scenario

December 11, 2018
Author(s)
Mohamed T. Hany, Richard Candell
… Industrial wireless becomes a potential networking solution in many scenarios due to its flexibility and ease of communications in harsh environments. Industrial wireless in gas sensing and … in some cases. At the National Institute of Standards and Technology (NIST), we developed an end-to- end …

Effect of Charpy Striker Configuration on Low- and High-Energy NIST Verification Specimens

September 12, 2018
Author(s)
Enrico Lucon, Jolene D. Splett
… Charpy absorbed energy has been extensively investigated in the past, and clear evidence has been published showing … (KV) tends to increase for specimens with KV ≥ 200 J. In this paper, we investigate how striking edge radius … and uncertainties for National Institute of Standards and Technology (NIST) low-energy and high- energy verification …

Interoperability Testbed for Smart Sensors in Smart Grids

July 9, 2018
Author(s)
Yuyin Song, Gerald J. FitzPatrick, Kang B. Lee, Avi M. Gopstein, Paul A. Boynton
… foundations for standards development for smart sensors in smart grids, including standards for interoperability test … has been built at the National Institute of Standards and Technology (NIST). This testbed consists of four layers: … Interoperability Testbed for Smart Sensors in Smart Grids …

NIST Big Data Interoperability Framework: Volume 8, Big Data Reference Architecture Interfaces

June 26, 2018
Author(s)
Wo L. Chang, Gregor von Laszewski, NBD-PWG NIST Big Data Public Working Group
… is a term used to describe extensive datasets, primarily in the characteristics of volume, variety, velocity, and/or … of data is outpacing scientific and technological advances in data analytics. To advance progress in Big Data, the NIST Big Data Public Working Group (NBD-PWG) …

Model-based Cosimulation for Industrial Wireless Networks

June 15, 2018
Author(s)
Ging Jeng, Honglei Li, Yanzhou Liu, Yongkang Liu, Mohamed Hany, Rick Candell, Shuvra Bhattacharyya
… Wireless communications technology has the potential to provide major benefits in lowering the cost and increasing the efficiency of factory … as machines, rails, etc.), and wireless communication. In this paper, we introduce a novel simulation framework to …

NIST Spectroscopic Measurement Standards

May 1, 2018
Author(s)
Paul C. DeRose, Kenneth D. Cole, Aaron Urbas, Steven J. Choquette, Evelyn Solis, Erica V. Stein, John E. Schiel, Brian Lang, Hua-Jun He
… concentrations. The National Institute of Standards and Technology (NIST) has developed Standard Reference Material … pathlength values, thereby increasing the accuracy in subsequent measurements using the short-pathlength …

A Gateway to Easily Integrate Simulation Platforms for Co-Simulation of Cyber-Physical Systems

April 10, 2018
Author(s)
Thomas P. Roth, Martin J. Burns
… components. An approach called co-simulation is often used in CPS conceptual design to integrate the specialized tools … adapt existing models and research infrastructure for use in HLA. An open-source implementation of the gateway has been developed for the National Institute of Standards and Technology (NIST) co-simulation platform called the Universal …

Spin currents and spin-orbit torques in ferromagnetic trilayers

March 19, 2018
Author(s)
Seung-heon C. Baek, Vivek P. Amin, Young-Wan Oh, Gyungchoon Go, Seung-Jae Lee, Geun-Hee Lee, Kab-Jin Kim, Mark D. Stiles, Byong-Guk Park, Kyung Jin Lee
… by the spin-orbit interaction is one of the central themes in condensed matter physics. The spin Hall effect, for … which is absent for bulk spin-orbit coupling effects in heavy metals. This out-of-plane component of spin … Spin currents and spin-orbit torques in ferromagnetic trilayers …

Universal CPS Environment for Federation (UCEF)

January 16, 2018
Author(s)
Martin J. Burns, Thomas P. Roth, Edward R. Griffor, Paul A. Boynton, Janos Sztipanovits, Himanshu Neema
… NIST, in collaboration with Vanderbilt University, has assembled an … cyber- physical systems (CPS). These capabilities are used in our research on CPS at scale for Smart Grid, Smart … introduces the requirements and implementation of the UCEF technology and indicates how we intend to use it in CPS …

Weather Correlations to Calculate Infiltration Rates for U.S Commercial Building Energy Models

November 14, 2017
Author(s)
Lisa C. Ng, Nelson Ojeda-Quiles, William S. Dols, Steven J. Emmerich
… infiltration and the impacts of improved airtightness. In a previous study, the National Institute of Standards and Technology developed a set of infiltration inputs for several … reference building energy models based on Chicago weather. In this paper, the work from the previous study was extended …

Evaluating the Effects of Modeling Errors for Isolated Finite 3-D Targets

October 19, 2017
Author(s)
Mark Alexander Henn, Bryan M. Barnes, Hui Zhou
… Our project at the National Institute of Standards and Technology is evaluating how to attain key CD and shape parameters from engineered in-die capable metrology targets. More specifically, the CDs … the actual measurements within acceptable error bounds. As in most applications, establishing a reasonable balance …

Local measurements of photocurrent and band gap in CdTe solar cells

September 25, 2017
Author(s)
Yohan Yoon, Jungseok Chae, Aaron M. Katzenmeyer, Heayoung Yoon, Joshua D. Schumacher, Sang M. An, Andrea Centrone, Nikolai B. Zhitenev
… Polycrystalline thin film technology has shown great promise for low cost, high … of microstructural properties of the devices is required. In this work, we investigate the inhomogeneous electrical and … (PTIR), is also used to obtain absorption spectra and maps in the near-field over a broad range of wavelengths. In PTIR …

Novel Nanofluidic Chemical Cells based on Self-Assembled Solid-State SiO2 Nanotubes

August 30, 2017
Author(s)
Hao Zhu, Haitao Li, Arvind Balijepalli, Joseph W. Robertson, Sergiy Krylyuk, Albert Davydov, John J. Kasianowicz, John S. Suehle, Qiliang Li
… No dispersion/aligning procedures were involved in the fabrication of nanofluidic devices by using this technology, enabling clean and smooth chemical cell. Ion … carried out on a SiO2 nanotube channel with 20 nm in diameter. A robust and well-controlled nanotube chemical …

Towards integrated superconducting detectors on lithium niobate waveguides

August 29, 2017
Author(s)
Jan P. Hoepker, Moritz Bartnick, Evan Meyer-Scott, Frederik Thiele, Stephan Krapick, Nicola Montaut, Matteo Santandrea, Harald Herrmann, Sebastian Lengeling, Raimund Ricken, Victor Quiring, Torsten Meier, Adriana Lita, Varun Verma, Thomas Gerrits, Sae Woo Nam, Christine Silberhorn, Tim J. Bartley
… are now well-established tools for low-light optics, and in particular quantum optics, boasting high-efficiency, … of generating, manipulating and measuring quantum light in many degrees of freedom, in a compact and potentially scalable manner. We will report …
Displaying 11601 - 11625 of 13225
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