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Journals

Adding Attributes to Role Based Access Control

June 1, 2010

Author(s)

David R. Kuhn, Edward Coyne, Timothy Weil

Role based access control (RBAC) is a popular model for information security. It helps reduce the complexity of security administration and supports the review...

Standard Reference Materials for Analysis of Dietary Supplements

June 1, 2010

Author(s)

Katherine E. Sharpless, David L. Duewer

NIST, in collaboration with the National Institutes of Health Office of Dietary Supplements (NIH-ODS) and the Food and Drug Administration (FDA) is producing...

A rapid, low-cost preparation of monodisperse niosomes in a microfluidic platform

June 1, 2010

Author(s)

Catherine T. Lo, Andreas Jahn, Wyatt N. Vreeland, Laurie E. Locascio

Niosomes are synthetic membrane vesicles made of self-assembled non-ionic surfactants (i.e. amphiphilic organic compounds). They bear the same properties as...

The Mystery of Clustering in Macromolecular Media

June 1, 2010

Author(s)

Boualem Hammouda

Clustering prevails in water-soluble polymers and biological macromolecules. It has also been observed in polar solvent mixtures. The possible causes of...

A Framework for XML Schema Naming and Design Rules Development Tools

June 1, 2010

Author(s)

Katherine C. Morris

Many organizations are facing enormous challenges today in trying to integrate a wide range of software systems. These systems span the functional areas within...

Theory for Polymer Analysis Using Nanopore-based Single-molecule Mass Spectrometry

June 1, 2010

Author(s)

Joseph E. Reiner, John J. Kasianowicz, Brian J. Nablo, Joseph W. Robertson

Nanometer-scale pores have demonstrated potential as a tool for the electrical detection and characterization of molecules. To provide a physical basis for...

Quality Focus: Certified Reference Materials

June 1, 2010

Author(s)

Katherine E. Sharpless

In June of this year, the final stage of the staggered implementation of current Good Manufacturing Practices (cGMPs) took effect, requiring all domestic and...

Single photon detection timing jitter in a visible light photon counter

June 1, 2010

Author(s)

Burm Baek, Kyle S. McKay, Martin J. Stevens, Jungsang Kim, Henry H. Hogue, Sae Woo Nam

Visible light photon counters (VLPCs) offer many attractive features as photon detectors, such as high quantum efficiency and photon number resolution.We report...

Automating Data Acquisition on a Mechanical Equal Arm Balance Used in Large Mass Calibrations

June 1, 2010

Author(s)

Kevin L. Chesnutwood

This paper focuses on efforts by the Mass and Force Group at the National Institute of Standards and Technology (NIST) to enhance the data taking operations of...

Wavelength bistability and switching in two-section quantum-dot diode lasers

June 1, 2010

Author(s)

Mingming M. Feng, Kevin L. Silverman, Richard P. Mirin, Steven T. Cundiff

We report lasing wavelength bistability with respect to applied bias on the saturable absorbers in two-section mode-locked quantum dot lasers. We show data from...

Toxicokinetics, tissue-specific distribution and whole body burden of persistent organic pollutants in the bottlenose dolphin (Tursiops truncatus)

June 1, 2010

Author(s)

Jennifer Yordy, John R. Kucklick, D A. Pabst, William McLellan, Randall S. Wells, Teresa Rowles

The majority of exposure assessments for free-ranging cetaceans focus on contaminant concentrations measured in blubber, and there are few data for other...

Synthesizing Accurate Voltages with Superconducting Quantum-Based Standards

June 1, 2010

Author(s)

Samuel P. Benz

Over the past three decades, the quantum behavior of superconducting Josephson junctions were exploited to dramatically improve the accuracy of dc voltage...

Theoretical model of errors in micromirror-based three-dimensional particle tracking

June 1, 2010

Author(s)

Andrew J. Berglund, Matthew D. McMahon, Jabez J. McClelland, James A. Liddle

Several recently developed particle-tracking and imaging methods have achieved three-dimensional sensitivity through the introduction of angled micromirrors...

Media Independent Handover Transport Using Cross-Layer Optimized Stream Control Transmission Protocol

June 1, 2010

Author(s)

Richard A. Rouil, Nada T. Golmie

The Media Independent Handover (MIH)architecture finalized by the IEEE 802.21 working group facilitates handovers between heterogeneous networks. The signaling...

Certification of NIST Standard Reference Material 640d

June 1, 2010

Author(s)

David R. Black, Donald A. Windover, Albert Henins, David L. Gil, James J. Filliben, James P. Cline

The National Institute of Standards and Technology (NIST) certify a variety of standard reference materials (SRM) to address specific aspects of instrument...

Nonlinear Calibration of Polarimetric Radar Cross Section Measurement Systems

June 1, 2010

Author(s)

Lorant A. Muth

Polarimetric radar cross section systems are characterized by polarimetric system parameters $\epsilon_h$ and $\epsilon_v$. These parameters can be obtained...

Influence of band parameters on spin-transfer torque in tunnel junctions: model calculations

June 1, 2010

Author(s)

Asma H. Khalil, Mark D. Stiles, Christian Heiliger

We study the in--plane spin--transfer torque in magnetic tunnel junctions for different band fillings and exchange splittings. The range of biases over which...

Molecular Mechanisms of the Librational Motions of Water in the Interlayers of Hydrocalumite

June 1, 2010

Author(s)

A.G. Kalinichev, E. Iskrenova-Tchoukova, Antonio Faraone, R.J. Kirkpatrick

Cylindrical Acoustic Resonator for the Re-determination of the Boltzmann Constant

June 1, 2010

Author(s)

J.T. Zhang, H. Lin, X.J. Feng, Keith A. Gillis, Michael R. Moldover

We describe progress towards re-determining the Boltzmann constant k B using two fixed-path, gas-filled, cylindrical, acoustic cavity resonators. The...

Compact and Distributed Modeling of Cryogenic Bulk MOSFET Operation

June 1, 2010

Author(s)

Akin Akturk, M. Holloway, S. Potbhare, David J. Gundlach, B Li, Neil Goldsman, M Peckerar, Kin P. Cheung

We have developed compact and physics-based distributed numerical models for cryogenic bulkMOSFET operation down to 20 K to advance simulation and first-pass...

CCQM-K63.a,b Non-Peptide Hormones in Serum: Cortisol and Progesterone: Final Report

May 30, 2010

Author(s)

Susan Tai, David L. Duewer

Hormones are chemical messengers that regulate many life functions. Deviations from normal hormone levels can have serious health consequences. Accurate...

Observations of Nanobubble Formation on Carbon Nanotubes

May 28, 2010

Author(s)

Andrew J. Slifka, Damian S. Lauria, Gurpreet Singh, Roop L. Mahajan

We used an optical trap and a high-speed camera to image bubble initiation on the surface of multi-walled carbon nanotubes. The laser wavelength was 1064 nm and...

Manipulating Quantum Dots to Nanometer Precision by Control of Flow

May 28, 2010

Author(s)

Chad Ropp, Roland Probst, Zachary Cummins, Rakesh Kumar, Andrew J. Berglund, Srinivasa R. Raghavan, Edo Waks, Benjamin Shapiro

Controlled manipulation of quantum dots with nanometer precision is an essential capability for basic science as well as for scalable engineering of...

Single Photon Level Spectrum Measurement at Fiber Communication Band Using Frequency Up-conversion Technology

May 27, 2010

Author(s)

Lijun Ma, Oliver T. Slattery, Xiao Tang

We have developed a polarization independent (PI) spectrometer based on frequency up-conversion technology for single photon level spectrum measurement at the...

Surrogate Mixture Models for the Thermophysical Properties of Aviation Fuel Jet-A

May 27, 2010

Author(s)

Marcia L. Huber, Eric W. Lemmon, Thomas J. Bruno

We developed surrogate mixture models to represent the thermophysical properties of two samples of aviation turbine fuel Jet-A. One sample is a composite of...

Identifying RF Identification Cards from Measurements of Resonance and Carrier Harmonics

May 27, 2010

Author(s)

Henry Romero, Kate Remley, Dylan Williams, Chih-Ming Wang, Timothy X. Brown

We show that careful measurements of the unloaded resonant frequency and quality factor of radio frequency identification proximity cards allow identification...

Digital Circuits Using Self-Shunted Nb/NbxSi1-x/Nb Josephson Junctions

May 27, 2010

Author(s)

David I. Olaya, Paul Dresselhaus, Samuel Benz, Anna Herr, Quentin Herr, alex Ioannidis, Donald Miller, Alan Kleinsasser

For the first time superconducting digital circuits based on novel Josephson junctions with amorphous niobium-silicon (a-NbSi) barriers were designed...

Monte Carlo simulation of photon scattering in x-ray absorption imaging of high-intensity discharge lamps

May 26, 2010

Author(s)

John J. Curry

Coherent and incoherent scattering of x rays during x-ray absorption imaging of high-intensity discharge lamps have been studied with Monte Carlo simulations...

Effects of disorder and internal dynamics on vortex wall propagation

May 26, 2010

Author(s)

Hongki Min, Robert D. McMichael, Michael J. Donahue, Jacques Miltat, Mark D. Stiles

Experimental measurements of domain wall propagation are typically interpreted by comparison to ideal models that ignore the effects of extrinsic disorder and...

Hybrid gap modes induced by fiber taper waveguides: application in spectroscopy of single solid-state emitters deposited on thin films.

May 24, 2010

Author(s)

Marcelo I. Davanco, Kartik A. Srinivasan

We show, via simulations, that an optical fiber taper waveguide may be an efficient spectroscopy tool for single emitters, such as single molecules or colloidal...

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