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Search Publications

NIST Authors in Bold

Displaying 18051 - 18075 of 74176

Fractionation and characterization of high aspect ratio gold nanorods using asymmetric-flow field flow fractionation and single particle inductively coupled plasma mass spectrometry

July 14, 2015
Author(s)
Thao M. Nguyen, Jingyu Liu, Vincent A. Hackley
Development of methods for the in situ fractionation and characterization of high aspect ratio (AR) gold nanorods (GNRs) is a rapidly growing area of interest within the nanotechnology field, particularly with respect to nanomanufacturing and biomedical

SIMULATION-BASED DESIGN CONCEPT EVALUATION FOR AMBULANCE PATIENT COMPARTMENTS

July 14, 2015
Author(s)
Deogratias Kibira, Yung-Tsun T. Lee, Jennifer L. Marshall, Allison Barnard Feeney, Larry Avery, Allie Jacobs
To address the inadequacy of existing standards regarding interior layout design, the Department of Homeland Security (DHS) Science and Technology Directorate, the National Institute of Standards and Technology (NIST), the National Institute for

An Itinerant Antiferromagnetic Metal Without Magnetic Constituents

July 13, 2015
Author(s)
E. Svanidze, Jiakui K. Wang, Tiglet Besara, L. Liu, Qingzhen Huang, T. Siegrist, Benjamin Frandsen, Jeffrey W. Lynn, Andriy H. Nevidomskyy, Monica Barbara Gamza, M.C. Aronson, Y.J. Uemura, E. Morosan
Itinerant and local moment magnetism have substantively different origins, and require distinct theoretical treatment. A unified theory of magnetism has long been sought after, and remains elusive, mainly due to the limited number of known itinerant

Spin Waves and Spatially Anisotropic Exchange Interactions in the S = 2 Stripe Antiferromagnet Rb 0.8 Fe 1.5 S 2

July 13, 2015
Author(s)
Meng Wang, P. Valdivia, Ming Yi, J. X. Chen, W. L. Zhang, R. A. Ewings, T. G. Perring, Yang Zhao, Leland Harriger, Jeffrey W. Lynn, E. Bourret-Courchesne, Pengcheng Dai, D. H. Lee, D. X. Yao, R. J. Birgeneau
An inelastic neutron scattering study of the spin waves corresponding to the stripe antiferromagnetic order in insulating Rb 0.8Fe 1.5S 2 throughout the Brillouin zone is reported. The spin wave spectra are well described by a Heisenberg Hamiltonian with

Strategies for Parallel Markup

July 12, 2015
Author(s)
Bruce R. Miller
Cross-referenced parallel markup for mathematics allows the combination of both presentation and content representations while associating the components of each. Interesting applications are enabled by such an arrangement, such as interaction with parts

Compact X-ray and Extreme-Ultraviolet Light Sources

July 10, 2015
Author(s)
Lahsen Assoufid, Uwe Arp, Patrick Naulleau, Sandra Biedron , William Graves
Bringing the brightness and power of vast synchrotron and free-electron laser sources to the scale of the lab and clinic marks an important next frontier—and could transform the landscape of X-ray science and technology.

Synthesis and Characterization of Bournonite PbCuSbS3 Nanocrystals

July 10, 2015
Author(s)
Kaya Wei, Joshua Martin, James Salvador, George S. Nolas
PbCuSbS3 nanocrystals were synthesized for the first time by a colloidal synthesis route and characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The particle size of

Developing Microwave Photonic Temperature Sensors

July 9, 2015
Author(s)
John S. Quintavalle, James Filla, Gregory F. Strouse, Zeeshan Ahmed
In recent years there has been considerable interest in exploiting the temperature dependence of sapphire whispering gallery mode frequency to develop a mechanically stable, high accuracy temperature sensor. Disk-resonator-based devices have been

Statistically background-free, phase-preserving parametric up-conversion with faint light

July 9, 2015
Author(s)
Yu-Hsiang Cheng, Tim O. Thomay, Glenn S. Solomon, Alan L. Migdall, Sergey Polyakov
We demonstrate phase preservation in a frequency up-conversion process at the single-photon level. This phase preservation enables the applications of frequency conversion of entangled photon pairs. Periodically poled lithium niobate waveguides and a 1550

Interferometric measurement of large sphere radii using holograms

July 8, 2015
Author(s)
Ulf Griesmann, Quandou (. Wang, Johannes A. Soons, Kate Medicus
We describe a new interferometric method for the measurement of large sphere radii in which the converging test beam is replaced by a pair of test beams with different focal lengths. The test beams are created by a pair of holograms that are fabricated on

MEMS optomechanical accelerometry standards

July 8, 2015
Author(s)
Felipe Guzman, Yiliang Bao, Jason J. Gorman, John R. Lawall, Jacob M. Taylor, Thomas W. LeBrun
Current acceleration primary standards reach relative uncertainties of the order of 0.001 and consist of complex test facilities, typically operated at National Metrology Institutes. Our research focuses on the development of silicon mechanical oscillator

Optomechanical Motion Sensors

July 8, 2015
Author(s)
Felipe Guzman, Oliver Gerberding, John T. Melcher, Julian Stirling, Jon R. Pratt, Gordon A. Shaw, Jacob M. Taylor
Compact optical cavities can be combined with motion sensors to yield unprecedented resolution and SI-traceability in areas such as acceleration sensing and atomic force microscopy AFM, among others. We have incorporated Fabry-Perot fiber-optic micro

Aging of Polymeric Films used in Protective Glazing Systems

July 7, 2015
Author(s)
Christopher C. White, Donald L. Hunston, Kar T. Tan
The toughness of polymer and glass laminates or win-dow glazing, are used to protect buildings and occupants from shattered glass resulting from natural disasters (e.g., hurricanes, tornadoes, seismic events), and intentional events (e.g., robbery
Displaying 18051 - 18075 of 74176
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