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NIST Authors in Bold

Displaying 24726 - 24750 of 73969

Unification of universal and non-universal topological quantum computation

July 26, 2011
Author(s)
Haitan Xu, Jacob Taylor
Approaches for implementing primitives for quantum computation using Read-Reyazi anyons remain computational difficult to find. We demonstrate how recently discovered approaches, including composition of anyons and deconstruction of many-qubit operations

A circular dielectric grating for vertical extraction of single quantum dot emission

July 25, 2011
Author(s)
Marcelo I. Davanco, Matthew T. Rakher, Dieter Schuh, Antonio Badolato, Kartik A. Srinivasan
We demonstrate a suspended circular grating composed of partially etched annular trenches in a thin GaAs membrane, designed for e±cient and moderately broadband ( approx. 5 nm) extraction of emission from single InAs quantum dots. Simulations indicate that

A fitting program for molecules with two inequivalent methyl tops and a plane of symmetry at equilibrium. Application to new microwave and millimeter-wave measurements in methyl acetate

July 25, 2011
Author(s)
Marcela Tudorie, Isabelle Kleiner, Jon T. Hougen, Sonia Melandri, Lilian Sutikdja, Wolfgang Stahl
A program for fitting the high-resolution torsion-rotation spectra of molecules having two inequivalent methyl rotors and a plane of symmetry at equilibrium is described and then applied to methyl acetate [CH3-O-C(=O)-CH3]. The G18 permutation-inversion

Magnetic Tunnel Junctions Fabricated Using Ion Neutralization Energy as a Tool

July 25, 2011
Author(s)
Joshua M. Pomeroy, Holger Grube, Pei-Ling Sun, Yun-Che Wang, Russell E. Lake
The neutralization energy of highly charged ions (HCIs) is used as an intermediate processing step to modify the electrical properties of magnetic tunnel junctions (MTJs), providing an additional degree of freedom in the devices’ fabrication. While most

SP250 Spectral Irradiance Calibrations

July 25, 2011
Author(s)
Howard W. Yoon, Charles E. Gibson
This document describes the process of the realization, the maintenance and the dissemination of the spectral irradiance scale and its accompanying uncertainties at the National Institute of Standards and Technology. It describes the measurement procedures

Supplementary comparison CCR(IK)-S2 of standards for absorbed dose to water Co-60 gamma radiation at radiation processing dose levels

July 25, 2011
Author(s)
Marc F. Desrosiers, D T. Burns, P J. Allisy-Roberts, P H. Sharpe, M. Pimpinella, V. Lourenco, Y. L Zhang, A Miller, V Generalova, V. Sochor
Eight national standards or absorbed dose to water in Co-60 gamma radiation at the dose levels used in radiation processing have been compared over the range from 1 kGy to 30 kGy using the alanine dosimeters of the NIST and the NPL as the transfer

Highly Selective GaN-nanowire/TiO2-nanocluser Hybrid Sensors for Detection of Benzene and Related Environment Pollutants

July 22, 2011
Author(s)
Geetha G. Aluri, Abhishek Motayed, Albert Davydov, Vladimir Oleshko, Kristine A. Bertness, Norman Sanford
Nanowire-nanocluster hybrid chemical sensors were realized by functionalizing gallium nitride (GaN) nanowires with titanium dioxide (TiO2) nanoclusters for selectively sensing benzene and other related aromatic compounds. Hybrid sensor devices were

Large-Area Overhead Manipulator for Access of Fields

July 22, 2011
Author(s)
Jeffrey W. White, Roger V. Bostelman
Multi-axis, cable-driven manipulators have evolved over many years providing large area suspended platform access, programmability, relatively rigid and flexibly- positioned platform control and full six degree of freedom (DOF) manipulation of sensors and

Thickness and Composition Reference Standards for Semiconductor Metrology

July 22, 2011
Author(s)
Donald Windover, Victor H. Vartanian, Tom Kelly, Tom Larson, David L. Gil
This report from the MET16 project describes tests of X-ray reflectometry (XRR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and atom probe tomography (APT) for thickness and compositional reference metrology.

Vetting Mobile Apps

July 22, 2011
Author(s)
Stephen Quirolgico, Jeffrey M. Voas, David R. Kuhn
Billions of copies of apps for mobile devices have been purchased in recent years. With this growth, however, comes an increase in the spread of potentially dangerous security vulnerabilities. Because of an app's low cost and high proliferation, the threat

A public randomness service

July 21, 2011
Author(s)
Michael J. Fischer, Michaela Iorga, Rene Peralta
We argue for the deployment of sources of randomness on the Internet for promoting and enhancing electronic commerce. We describe, in rough detail, our planned implementation of such a source.

Diamagnetic correction to the 9 Be + ground-state hyperfine constant

July 21, 2011
Author(s)
Nobuyasu Shiga, Wayne M. Itano, John J. Bollinger
We report an experimental determination of the diamagnetic correction to the 9Be + ground state hyperfine constant A. We measured A = −625 008 837.371(11) Hz at a magnetic field B of 4.4609 T. Comparison with previous results, obtained at lower values of B

Gas Hydrate Research Database and Options for Data Exchange

July 21, 2011
Author(s)
Kenneth G. Kroenlein, Chris D. Muzny, Vladimir Diky, Robert D. Chirico, Michael D. Frenkel, E. D. Sloan
To facilitate advances in application of technologies pertaining to gas hydrates, a freely available data resource containing experimentally derived information about those materials was developed. This database is primary focused on thermophysical

IEEE RAS Standing Committee for Standards Activities: History and Status Update

July 21, 2011
Author(s)
Rajmohan Madhavan, Wonpil Yu, C Biggs, Craig I. Schlenoff, Hui-Min Huang
The Standing Committee for Standards Activities (SCSA) under the Industrial Activities Board (IAB) of the IEEE Robotics and Automation Society (RAS) is working together with the research and industrial communities and other Standards Developing

NIST Special Databse 32 - Multiple Encounter Dataset II (MEDS-II)

July 21, 2011
Author(s)
Andrew P. Founds, Nick Orlans, Whiddon Genevieve, Craig I. Watson
This document and associated dataset is an update to the Multiple Encounter Dataset I (MEDS-I), originally published by the National Institute of Standards and Technology (NIST) in May 2010. The MEDS is a test corpus organized from an extract of submission

Predicting Failure in Complex Systems by Perturbing Markov Chain Models

July 21, 2011
Author(s)
Christopher E. Dabrowski, Fern Y. Hunt
In recent years, substantial research has been devoted to monitoring and predicting performance degradations in real-world complex systems within large entities such as nuclear power plants, electrical grids, and distributed computing systems. Special
Displaying 24726 - 24750 of 73969
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