Journals

The Application of Optical Coherence Tomography to Problems in Polymer Matrix Composites

January 1, 2001

Author(s)

Joy Dunkers, Frederick R. Phelan Jr., D P. Sanders, M J. Everett, William H. Green, Donald L. Hunston, Richard~undefined~undefined~undefined~undefined~undefined Parnas

The Composites Group at the National Institute of Standards and Technology has found optical coherence tomography (OCT) to be a powerful tool for non...

Buffer Transport in Hydroxyethyl Methacrylate Copolymer Irradiated by Gamma-Rays

January 1, 2001

Author(s)

K F. Chou, Charles C. Han, S K. Lee

Uncertainty of Complex Permittivity Measurements by Split-post Dielectric Resonator Technique

January 1, 2001

Author(s)

Jerzy Krupka, A. P. Gregory, O. C. Rochard, R. M. Clarke, Billy F. Riddle, James R. Baker-Jarvis

Characterization of Surface Energy Effects on Morphology of Thin Diblock Copolymer Films by High Throughput Techniques

January 1, 2001

Author(s)

A P. Smith, A Sehgal, Eric J. Amis, Alamgir Karim

Block copolymers are widely used materials due to their unique capabilities as surfactants, adhesives and ordered templates. An understanding of the properties...

Separation of Inner Shell Vacancy Transfer Mechanisms in Collisions of Slow Ar17+ Ions with SiO2

January 1, 2001

Author(s)

Z Berenyi, N Stolterfoht, E Takacs, J Pedulla, R Deslattes, J Gillaspy, R Minniti, L Ratliff

We have studied the spectrum of x-rays emitted when 130 and 200 keV kinetic energy hydrogen-like argon ions impact silicon dioxide surfaces. Specifically, we...

Bulk and Surface Evidence for the Long Range Spatial Modulation of X-Ray Absorption in the AlPdMn Quasicrystal at Bragg Incidence

January 1, 2001

Author(s)

G Cappello, A Dechelette, F Schmithusen, S Decossas, J Chevrier, F Comin, V Formoso, M. De Boissieu, Terrence J. Jach, R. Colella, T Lograsso, C Jenks, D W. Delaney

An X-ray standing waves experiment was performed at the ID32 beam line of the ESRF on an Al-PD-Mn quasicrystal with the X-ray beam at normal incidence. The X...

Mass Spectroscopy of Spin-on-glass Low-k Dielectric Precursors

January 1, 2001

Author(s)

William E. Wallace, Charles M. Guttman, Joseph M. Antonucci

Surface Analysis Studies of Yield Enhancements in Secondary Ion Mass Spectrometry by Polyatomic Projectiles

January 1, 2001

Author(s)

E Fuoco, G Gillen, M B. Wijesundara, William E. Wallace, L Hanley

Textile Composites: Modelling Strategies

January 1, 2001

Author(s)

S V. Lomov, G Huysmans, Y Luo, Richard~undefined~undefined~undefined~undefined~undefined Parnas, A Prodromou, I Verpoest, Frederick R. Phelan Jr.

Multiplexed Readout of Superconducting Bolometers

December 31, 2000

Author(s)

D. J. Benford, C. A. Allen, James A. Chervenak, M. M. Freund, A. S. Kutyrev, S. H. Mosely, Rick A. Shafer, Johannes G. Staguhn, Erich N. Grossman, Gene C. Hilton, Kent D. Irwin, John M. Martinis, Sae Woo Nam, Carl D. Reintsema

Studies of astrophysical emission in the far-infrared and submillimeter require large arrays of detectors containing from hundreds to thousands of elements. A...

The Approaching Revolution in X-ray Microanalysis: The Microcalorimeter Energy Dispersive Spectrometer

December 31, 2000

Author(s)

Dale Newbury, David A. Wollman, Gene C. Hilton, Kent D. Irwin, Norman F. Bergren, David A. Rudman, John M. Martinis

Superconducting Transition-Edge-Microcalorimeter X-ray Spectrometer with 2 eV Energy Resolution at 1.5 keV

December 31, 2000

Author(s)

David A. Wollman, Sae Woo Nam, Dale Newbury, Gene C. Hilton, Kent D. Irwin, Norman F. Bergren, Steven Deiker, David A. Rudman, John M. Martinis

We describe the operation and performance of a prototype microcalorimeter ?energy-dispersive? (nondispersive) x-ray spectrometer (mcal EDS) developed at NIST...

Calculation of Tc in a Normal-Superconductor Bilayer Using the Microscopic-Based Usadel Theory

December 31, 2000

Author(s)

John M. Martinis, Gene C. Hilton, Kent D. Irwin, David A. Wollman

The Usadel equations give a theory of superconductivity, valid in the diffusive limit, that is a generalization of the microscopic equations of the BCS theory...

A Mo-Cu Superconducting Transition-Edge Microcalorimeter with 4.5 eV Energy Resolution at 6 keV

December 31, 2000

Author(s)

Kent D. Irwin, Gene C. Hilton, John M. Martinis, Steven Deiker, Norman F. Bergren, Sae Woo Nam, David A. Rudman, David A. Wollman

We describe a superconducting transition-edge microcalorimeter with an energy resolution of 4.5 1 0.1 eV full-width at half-maximum (FWHM) for Mn Kα X-rays from...

Performance of Multiplexed SQUID Readout for Cryogenic Sensor Arrays

December 31, 2000

Author(s)

James A. Chervenak, Erich N. Grossman, Kent D. Irwin, John M. Martinis, Carl D. Reintsema, C. A. Allen, David I. Bergman, S. H. Mosely, Rick A. Shafer

We report on the implementation of a multiplexer that users superconducting quantum interference devices (SQUIDs) to read out low-impedance cryogenic detectors...

1,6-Hexanedithiol Monolayers on Au(111): A Multi-Technique Structural Study

December 29, 2000

Author(s)

T Leung, M Gerstenberg, D J. Lavrich, G Scoles, F Schreiber, G Poirier

Monolayers of 1,6-hexanedithiol [HS(CH 2) 6SH] deposited on Au(111) from the gas phase were characterized by scanning tunneling microscopy (STM), grazing...

CollabLogger: A Tool for Visualizing Groups at Work

December 28, 2000

Author(s)

Emile L. Morse, Michelle P. Steves

The CollabLogger is a visual tool that has been developed to support usability analyses of human-computer interaction in a team environment. The participants in...

Reconstitution of the Pore-Forming Toxin α-Hemolysin in Phospholipid/18-Octadecyl-1-thiahexa(ethylene oxide) and Phospholipid/n-Octadecanethiol Supported Bilayer Membranes

December 26, 2000

Author(s)

S. A. Glazier, David J. Vanderah, Anne L. Plant, H Bayley, Gintaras Valincius, John J. Kasianowicz

Estimation of the Hydrophobic Effect in an Antigen-Antibody Protein-Protein Interface

December 19, 2000

Author(s)

E. J. Sundberg, M. Urrutia, B C. Braden, J. Isern, D. Tsuchiya, B. A. Fields, E Malchiodi, J. Tormo, Frederick P. Schwarz, R A. Mariuzza

Antigen-antibody complexes provide useful models for analyzing the thermodynamics of protein-protein association reactions. We have employed site-directed...

Testing for the Antiphospholipid Syndrome: Importance of IgA Anti-beta 2-glycoprotein I

December 17, 2000

Author(s)

T.P. Greco, Michael D. Amos, A.M. Conti-Kelly, J.D. Naranjo, J.W. Ijdo

Noise-Induced Leakage and Counting Errors in the Electron Pump

December 15, 2000

Author(s)

Richard L. Kautz, Mark W. Keller, John M. Martinis

Computer simulations reveal that the lowest rates of leakage and counting errors observed in the electron pump can be explained by photon-assisted tunneling...

Functionally Discrete Mimics of Light-Activated Rhodopsin Identified Through Expression of Soluble Cytoplasmic Domains

December 15, 2000

Author(s)

N G. Abdulaev, T Ngo, Ruby I. Chen, Z H. Lu, K D. Ridge

Seven-helical integral membrane receptors mediate signal transduction between extracellular stimuli and intracellular signaling cascades. Numerous studies on...

Gradient Search Method for Orbital-Dependent Density-Functional Calculations

December 15, 2000

Author(s)

R Hyman, Mark D. Stiles, A Zangwill

We describe a gradient search method appropriate for electronic structure problems where the energy functionals are explicitly orbital-dependent. The ground...

Gd(0001): A Semi-Infinite Three-Dimensional Heisenberg Ferromagnet With Ordinary Surface Transition

December 11, 2000

Author(s)

C S. Arnold, David P. Pappas

By comparing the surface and bulk magnetizaiton of smooth, well-ordered Gd samples, we show that the surface has an ordinary transition, I.e. a common curie...

Non-collinear Exchange Coupling in Fe/Mn/Fe(001): Insight from Scanning Tunneling Microscopy

December 1, 2000

Author(s)

Daniel T. Pierce, Angela Davies, Joseph A. Stroscio, D Tulchinsky, John Unguris, Robert Celotta

The film growth and morphology of epitaxial Mn films grown on Fe(001) single crystal whiskers measured with scanning tunneling microscopy (STM) provides insight...

A Gamma-Based Framework for Modeling Variable-Rate MPEG Video Sources: The GOP GEAR Model

December 1, 2000

Author(s)

M R. Frey, S Nguyen-Quang

A flexible model called the GOP GBAR model based on Gamma-distributed variables is proposed for variable-rate MPEG video sources. This model is an extension of...

Whisker-Reinforced Dental Core Buildup Composites: Effect of Filler Level on Mechanical Properties

December 1, 2000

Author(s)

Hockin D. Xu, Douglas T. Smith, Gary E. Schumacher, F Eichmiller

The strength and toughness of dental corebuildup composites in large stress-bearing restorations need to be improved to reduce the incidence of fracture due to...

Numerical Simulations of Subcritical Crack Growth by Stress Corrosion in an Elastic Solid

December 1, 2000

Author(s)

Z Tang, A F. Bower, Tze J. Chuang

A front-tracking finite element method is used to compute the evolution of a crack-like defect that propagates by stress driven corrosion in an isotropic...

NIST Centennial Celebration - Crystallographic Highlights

December 1, 2000

Author(s)

Winnie K. Wong-Ng, Alan D. Mighell, Gabrielle G. Long, Leonid A. Bendersky, Vicky L. Karen, J D. Barnes, G L. Gilliland, T Gallagher, Terrell A. Vanderah, R G. Munro, Paul E. Stutzman, H F. McMurdie, S Block, Gasper J. Piermarini, Robert S. Roth, Antonio Santoro, Curt W. Reimann, C R. Hubbard, John W. Cahn, E Prince, D R. Lide, H Ondik, Lawrence P. Cook, T Siegrist, G DeTitta, L Finger, H Evans, E Gabe, G Enright, J T. Armstrong, M Levenson, Laurence C. Chow, Shozo Takagi, M Mathew, Jeffrey W. Lynn, H S. Peiser

NIST has a long history of crystallographic research, and has made significant contributions to the advancement of the fields of crystallography, biology, and...

Texture Development and Microstructure Evolution in Liquid-Phase-Sintered Alpha-Al₂O₃ Ceramics Prepared by Templated Grain Growth

December 1, 2000

Author(s)

J Blendell, C A. Handwerker

Templated grain growth is a promising processing route for the development of highly textured polycrystalline ceramics. The development of texture in ceramic...