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Journals

SysML and UML 2 Support for Activity Modeling

June 1, 2005

Author(s)

Conrad E. Bock

This article describes activity modeling as specified by the Systems Modeling Language (SysML) and the finalization of the Unified Modeling Language version 2...

Antenna coupled niobium bolometers for 10 (mu)m radiation detection

June 1, 2005

Author(s)

Robert Hadfield, Aaron J. Miller, Sae Woo Nam, Erich N. Grossman, Robert E. Schwall,

We report on the fabrication and testing of antenna-coupled niobium bolometers for 10-micron wavelength radiation detection. We use 20 nm thick Nb films on...

Fabrication and Measurement of Tall Stacked Arrays of SNS Josephson Junctions

June 1, 2005

Author(s)

Nicolas Hadacek, Paul Dresselhaus, Yonuk Chong, Samuel Benz, John E. Bonevich

We have made tall, uniform stacked Josephson junction arrays by developing an etch process using an inductively coupled plasma etcher. This process produces...

Stresses in Ion Exchange Layers of Soda-Lime-Silicate Glass

June 1, 2005

Author(s)

Theo Fett, J -. Guin, Sheldon M. Wiederhorn

This paper presents a new method to determine both the magnitude and the sign of the surface stresses that develop as a consequence of sodium/hydrogen ion...

Supersonically Cooled Moleculear Ions in a Slit-Jet Discharge: High-Resolution Infrared Spectrscopy and Tunneling Dynamics of HD₂O+

June 1, 2005

Author(s)

Feng Dong, D Uy, S Davis, Mark Child, David Nesbitt

Jet-cooled high-resolution infrared spectra of partially deuterated hydronium (HD 2O+) in the O-H stretch region (v 3 band) are obtained for the first time...

Scalable Register Initialization for Quantum Computing in a Optical Lattice

June 1, 2005

Author(s)

G K. Brennen, G Pupillo, A M. Rey, Charles W. Clark, Carl J. Williams

The Mott insulator state created by loading an atomic Bose-Einstein condensate (BEC) into an optical lattice may be used as a means to prepare a register of...

Simulation of Electron Spectra for Surface Analysis (SESSA): A Novel Software Tool for Quantitative Auger-Electron Sspectroscopy and X-ray Photoelectron Spectroscopy

June 1, 2005

Author(s)

W Smekal, W S. Werner, Cedric J. Powell

A description is given of a new NIST database for quantitative Auger-electron and X-ray photoelectron spectroscopy (AES/XPS): Simulation of Electron Spectra for...

Measurements & modeling of phonon cooling by electron-tunneling refrigerators

June 1, 2005

Author(s)

Nathan A. Tomlin, A. M. Clark, Anthony Williams, Steve Ruggiero, Gene C. Hilton, James A. Beall, Kent D. Irwin, Leila R. Vale, Joel Ullom

We demonstrate cooling of the electrons and phonons of a silicon nitride Si-N membrane by solid-state refrigerators based on Normal-metal/Insulator...

Functional Reconstitution of Ion Channels in POlymerizable Lipid Membranes

June 1, 2005

Author(s)

Devanand K. Shenoy, W Barger, A Singh, Rekha Panchal, M Misakian, Vincent M. Stanford, John J. Kasianowicz

Tuning of Tungsten Thin Film Superconducting Transition Temperature for Fabrication of Photon Number Resolving Detectors

June 1, 2005

Author(s)

Adriana Lita, Danna Rosenberg, Sae Woo Nam, Aaron J. Miller, Davor Balzar, L. M. Kaatz, R. E. Schwall

Tungsten thin films can form in one of two crystal structures: alpha (bcc), with a superconducting transition temperature (T c) of 15 mK, and beta (A15), with a...

Performance of photon-number resolving transition-edge sensors with an integrated 1550 nm resonant cavity

June 1, 2005

Author(s)

Danna Rosenberg, Adriana Lita, Aaron J. Miller, Sae Woo Nam, Robert E. Schwall

Many quantum-information applications require high-efficiency, low-noise, single-photon-sensitive detectors that operate at visible and near-infrared...

Functional Reconstitution of Protein Ion Channels Into Planar Polymerizable Phospholipid Membranes

June 1, 2005

Author(s)

D K. Shenoy, W R. Barger, A Singh, R G. Panchal, Martin Misakian, Vincent M. Stanford, John J. Kasianowicz

Analyzing Microstructure by Rietveld Refinement

June 1, 2005

Author(s)

Davor Balzar, N C. Popa

Rietveld refinement has a primary purpose of refining crystal structure. However, this powerful technique is being increasingly used for obtaining...

Mass Flow Rate of R-410A Through Short Tubes Working Near the Critical Point

June 1, 2005

Author(s)

Y Kim, William V. Payne, John Choi, Piotr A. Domanski

Experimental data were taken to examine R-410A mass flow rate characteristics through short tube restrictors at upstream pressures approaching the critical...

Nanoscale elastic-property measurements and mapping using atomic force acoustic microscopy methods

June 1, 2005

Author(s)

Donna C. Hurley, M Kopycinski-Muller, Anthony B. Kos, R.H. Geiss

We describe a dynamic atomic force microscopy (AFM) method for measuring the elastic properties of surfaces, thin films and nanostructures at the nanoscale. Our...

Magnetic-Field Dependence of the Reversible Axial-Strain Effect in Y-Ba-Cu-O Coated Conductors

June 1, 2005

Author(s)

Najib Cheggour, John (Jack) W. Ekin, C. L. H. Thieme

The critical-current density J c of an yttrium-barium- copper-oxide (YBCO) coated conductor deposited on a biaxially-textured Ni-5at.%W substrate was measured...

Effect of Conduit Material on CICC Performance Under High Cycling Loads

June 1, 2005

Author(s)

Nicolai N. Martovetsky, Pierluigi Bruzzone, Boris Stepanov, Rainer Wesche, Chen-yu Gung, J V. Minervini, M Takayasu, Loren F. Goodrich, John (Jack) W. Ekin, Arend Nijhuis

Recent International Thermonuclear Experimental Reactor (ITER) Model Coils and tests on Nb 3Sn Cable in Conduit Conductors (CICC) showed a significant and...

Variable-Temperature Critical-Current Measurements on a Nb₃Sn Wire

June 1, 2005

Author(s)

Loren F. Goodrich, Theodore C. Stauffer

We made variable-temperature critical-current (I c) measurements on a commercial multifilamentary Nb 3Sn wire for temperatures (T) from 4 to 17 K and magnetic...

Unexpected Effect of Field Angle in Magnetoresistance Measurements of High-Purity Nb

June 1, 2005

Author(s)

Loren F. Goodrich, Theodore C. Stauffer, Jolene Splett, Dominic F. Vecchia

We report on unexpected field-angle dependence of the magnetoresistance measurements of commercial, high-purity Nb discovered during our study of residual...

Compressive Prestrain in High-Niobium-Fraction Nb₃Sn Superconductors

June 1, 2005

Author(s)

John (Jack) W. Ekin, Najib Cheggour, Mike Abrecht, Cameron C. Clickner, Michael Field, Seungok Hong, Jeffrey Parrell, Y. Zhang

Multifilamentary Nb 3Sn superconducting strands fabricated with high niobium fractions have exceptionally high critical-current densities but are sometimes...

Practical High-Resolution Programmable Josephson Voltage Standards using Double- and Triple-Stacked MoSi₂ -Barrier Junctions

June 1, 2005

Author(s)

Yonuk Chong, Charles J. Burroughs, Paul Dresselhaus, Nicolas Hadacek, Hirotake Yamamori, Samuel Benz

We have developed vertically stacked superconductor-normal metal- superconductor Josephson junction technology for the next generation quantum voltage standards...

Flexible Cryo-packages for Josephson Devices

June 1, 2005

Author(s)

Charles J. Burroughs, Samuel Benz, Paul Dresselhaus, Yonuk Chong, Hirotake Yamamori

We have developed a method of bonding superconductive integrated-circuit chips to interchangeable, microwave-compatible, flexible cryo-packages. This new 'flip...

Stacked Niobium-MoSi₂-Niobium Josephson Junctions for AC Voltage Standards

June 1, 2005

Author(s)

Paul Dresselhaus, Yonuk Chong, Samuel Benz

Superconductor-normal metal-superconductor (SNS) Josephson junctions have proven to be a critical technology for voltage standards. NIST has used SNS junctions...

MuJava: An Automated Class Mutation System

June 1, 2005

Author(s)

Y Ma, A. J. Offutt, Y R. Kwon

The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and...

Acoustical methods to determine thin-film and nanoscale mechanical properties

May 31, 2005

Author(s)

Donna C. Hurley, Roy H. Geiss, N Jennett, Malgorzata Kopycinska-Mueller, A Maxwell, Jens Mueller, David T. Read, J Wright

We describe two acoustical methods to evaluate the mechanical properties of thin films and nanoscale structures: atomic force acoustic microscopy and surface...

Review of the 3rd Non-LTE Code Comparison Workshop

May 31, 2005

Author(s)

Y Ralchenko, R W. Lee, C Bowen

A review of the 3rd workshop on comparison of computer codes for modeling population kinetics in non-LTE plasmas is presented. We discuss the motivation for and...

Active Vibration Isolation of a Large Stroke Scanning Probe Microscope by Using Discrete Sliding Mode Control

May 31, 2005

Author(s)

J Y. Yen, K J. Lan, John A. Kramar

Active vibration isolation is gaining increased attention in the ultra high precision applications to effectively treat the unavoidable ground vibration. The...

Measurement of Thermal Properties of Gypsum Board at Elevated Temperatures

May 30, 2005

Author(s)

Samuel L. Manzello, Seul-Hyun Park, Dale P. Bentz, Tensei Mizukami

The thermal conductivity, specific heat, mass loss, and linear contraction for gypsum board types widely used in the USA and Japan were measured both at room...

Securing Voice Over IP Networks

May 27, 2005

Author(s)

T J. Walsh, D. Richard Kuhn

Voice over IP - the transmission of voice over traditional packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new...

Low noise synthesis of microwave signals from an optical source

May 26, 2005

Author(s)

John J. McFerran, Eugene N. Ivanov, A Bartels, G Wilpers, Christopher W. Oates, Scott A. Diddams, Leo W. Hollberg

We demonstrate the low noise synthesis of a harmonic comb of microwave frequencies using a femtosecond laser based synthesiser that is referenced to a cabity...

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