Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Journals

Anomalies in the Optical Index of Refraction of Spun Cast Polystyrene Thin Films

January 1, 2000

Author(s)

X Z. Hu, K Shin, Miriam Rafailovich, J Sokolov, R Stein, Y Chan, K. L. Williams, Wen-Li Wu, R Kolb

Stability of Blends of Polyether Sulfone With Thermotropic Liquid Crystalline Polymers

January 1, 2000

Author(s)

F Qiao, Kalman D. Migler, Charles C. Han

The formation and stability of various liquid crystalline polymers in PES matrix has been studied by in-line optical and light scattering microscopy. The fiber...

Indentation Modulus and Hardness of Whisker-Reinforced Heat-Cured Dental Resin Composites

January 1, 2000

Author(s)

H H. Xu, Douglas T. Smith, Gary E. Schumacher, F Eichmiller, Joseph M. Antonucci

Recent studies showed that ceramic whisker reinforcement imparted a nearly two-fold increase in the strength of dental resin composites. The aim of the study...

A Practical Fiber Optic Sensor to Monitor Resin Cure and Interphase Formation

January 1, 2000

Author(s)

Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, J H. VanZanten, Joy Dunkers, Richard~undefined~undefined~undefined~undefined~undefined Parnas

A fluorescent probe, covalently grafted to glass, can be used to study the glass/resin interphase region near the surface. A blue shift in fluorescence during...

Laser Spectroscopy of Jet-Cooled Ethyl Radical: Infrared Studies in the CH₂ Stretch Manifold

January 1, 2000

Author(s)

S Davis, D Uy, David Nesbitt

A glow discharge, slit supersonic expansion in conjunction with direct infrared laser absorption methods has been utilized to record high resolution vibration...

Coherence Properties of an Atom Laser

January 1, 2000

Author(s)

M Trippenbach, Y B. Band, M Edwards, M R. Doery, Paul S. Julienne, Edward W. Hagley, Lu Deng, M M. Kozuma, Kristian Helmerson, S L. Rolston, William D. Phillips

We study the coherence properties of an atom laser, which operates by extracting atoms from a gaseous Bose-Einstein condensate via a two-photon Raman process...

Use of Relativistic Effective Core Potentials in the Calculation of Total Electron-Impact Ionization Cross Sections

January 1, 2000

Author(s)

W M. Huo, Yong Sik Kim

The Binary-Encounter-Bethe (BEB) model of Kim and Rudd for total ionization cross sections by electron impact is re-examined when the target is an atom with...

Temperature Dependence of Neutral and Positively Charged Si and SiCl Etch Products During Argon-Ion-Enhanced Etching of Si(100) by Cl₂

January 1, 2000

Author(s)

N Materer, R S. Goodman, S R. Leone

The temperature dependence of neutral and positively charged Si and SiCl etch products produced during argon-ion-enhanced etching of Si(100) in a molecular...

Photofragmentation of Ammonia 193.3 nm: Bimodal Rotational Distribution and Vibrational Excitation of NH₂( )

January 1, 2000

Author(s)

R A. Loomis, J P. Reid, S R. Leone

Time-resolved Fourier transform infrared emission spectroscopy is used to measure the nascent rovibrational distribution of low-lying electronically excited NH...

Laboratory Astrophysics and Microanalysis With NTD-Germanium-Based X-Ray Microcalorimeters

January 1, 2000

Author(s)

E Silver, H. Schnopper, Simon R. Bandler, S Murray, N. Madden, D Landis, J. Beeman, E. E. Haller, M Barbera, G Tucker, John D. Gillaspy, E Takacs, James V. Porto

With the ability to create cosmic plasma conditions in the laboratory it is possible to investigate the dependencies of key diagnostic x-ray lines on density...

Generating Solitons by Phase Engineering of a Bose-Einstein Condensate

January 1, 2000

Author(s)

J Denschlag, J E. Simsarian, D L. Feder, Charles W. Clark, L A. Collins, J Cubizolles, Lu Deng, Edward W. Hagley, Kristian Helmerson, W P. Reinhardt, S L. Rolston, B I. Schneider, William D. Phillips

We demonstrate quantum phase engineering using two novel techniques that allow us to write and read the spatial phase of a Bose-Einstein condensate (BEC). We...

Novel Substrates of Escherichia Coli Nth Protein and Its Kinetics for Excision of Modified Bases From DNA Damaged by Free Radicals

January 1, 2000

Author(s)

M. Dizdaroglu, C Bauche, H Rodriguez, J Laval

Escherichia coli Nth protein (endonuclease III) is a DNA glycosylase with a broad substrate specificity for pyrimidine derivatives. We discovered novel...

NMR Spectroscopy Molecular Dynamics, and Conformation of a Synthetic Octasaccharide Fragment of the O-Specific Polysaccharide of Shigella Dysenteriae Type 1

January 1, 2000

Author(s)

B Coxon, Fahriye N. Sari, G Batta, V Pozsgay

A synthetic octasaccharide fragment of the O-polysaccharide from Shigella dysenteriae type 1 has been studied as its methyl glycoside derivative by one...

Electrostatically Driven Polymer Translocation Through a Narrow Pore

January 1, 2000

Author(s)

Z Konkoli, T Ambjornsson, S P. Apell, John J. Kasianowicz

We studied theoretically how single-stranded DNA enters a nanometer-scale pore. We describe the flux of DNA molecules into the pore as a function of the applied...

Nanoindentation of Polymers: Tip Shape Calibration and Uncertainty Issues

January 1, 2000

Author(s)

Mark R. VanLandingham, John S. Villarrubia, G Meyers

Indentation measurements made with atomic force microscopy (AFM) probes are relative measurements, largely due to the lack of information regarding the tip...

The Role of Periodic Interferometer Errors in the Calibration of Capacitance Displacement Sensors for Nanometrology Applications

January 1, 2000

Author(s)

R Koning, Ronald G. Dixson, Joseph Fu, Theodore V. Vorburger

Although the role of the periodic errors of optical heterodyne interferometers in displacement measurements is fairly well understood, their influence on the...

Density Variations in Scanned Probe Oxidation

January 1, 2000

Author(s)

K Morimoto, F Perez-murano, John A. Dagata

The density of oxide nanostructures produced by scanned probe microscopy (SPM) is a function of substrate doping and voltage-pulse parameters. The total oxide...

Carrier Concentration Dependence of Scanning Capacitance Microscopy Signal in the Vicinity of P-N Junctions

January 1, 2000

Author(s)

Joseph Kopanski, Jay F. Marchiando, Brian G. Rennex

Scanning capacitance microscopy was used to image 1) boron dopant gradients in p-type silicon, and 2) identical boron dopant gradients in n-type silicon. The...

Nanosecond Magnetization Reversal in High Coercivity Thin Films

January 1, 2000

Author(s)

N D. Rizzo, Thomas J. Silva, Anthony B. Kos

We used a wide-field Kerr microscope to measure magnetization reversal in high coercivity thin film media that were subjected to nanosecond field pulses...

IC Test Structures for Multi-Layer Interconnect Stress Determination

January 1, 2000

Author(s)

S. A. Smee, Michael Gaitan, Donald B. Novotny, Yogendra K. Joshi, David L. Blackburn

A new method for measuring strain in multi-layer IC interconnects is presented. This method utilizes process compatible micromachined test structures and is...

Transport Properties of Petroleum Fractions

January 1, 2000

Author(s)

M E. Baltatu, R A. Chong, Marcia L. Huber, Arno D. Laesecke

A corresponding-states model for the properties of petroleum fractions is presented.

The NIST 1999 Speaker Recognition Evaluation - An Overview

December 31, 1999

Author(s)

Alvin F. Martin, Mark A. Przybocki

This article summarizes the 1999 NIST Speaker Recognition Evaluation. It discusses the overall research objectives, the three task definitions, the development...

Mg/GaAs(001): A Highly Anisotropic Reaction Morphology

December 31, 1999

Author(s)

Steven W. Robey

The spontaneous growth of one-dimensional structures during reaction of Mg on GaAs(001) 4x2 Ga-stabilized surface was observed by in situ electron diffraction...

Evaluating the Uncertainty of Josephson Voltage Standards

December 31, 1999

Author(s)

Clark A. Hamilton, Yi-hua D. Tang

Microcalorimeter Energy Dispersive Spectrometry for Low Voltage SEM

December 31, 1999

Author(s)

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

Far-Infrared Transmittance and Reflectance of YBa₂Cu₃O_7-x Films on Si Substrates

December 31, 1999

Author(s)

A. R. Kumar, Nien F. Zhang, V. A. Boychev, D. B. Tanner, Leila R. Vale, David A. Rudman

The transmittance and reflectance of superconductive YBa 2Cu 3O 7-γ (YBCO) thin films deposited on Si substrates have been measured in the far-infrared...

Predicting Nonlinear Effects in Superconducting Microwave Transmission Lines from Mutual Inductance Measurements

December 31, 1999

Author(s)

James Booth, Leila R. Vale, Ronald H. Ono, John H. Claassen

Large-Area YBa₂Cu₃O_7-x Bolometers on Si Substrates

December 31, 1999

Author(s)

Leila R. Vale, Ronald H. Ono, Donald G. McDonald, Robert J. Phelan

We have developed YBa 2Cu 3O 7-x (YBCO) thermometers for large-area (4 mm x 4 mm) electrical substitution bolometers. We passivated the YBCO with a thin Au...

Lowering the Limit of Detection in High Spatial Resolution Electron Beam Microanalysis with the Microcalorimeter Energy Dispersive X-ray Spectrometer

December 31, 1999

Author(s)

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

First Astronomical Application of a Cryogenic Transition Edge Sensor Spectrophotometer

December 31, 1999

Author(s)

R. W. Romani, Aaron J. Miller, B. Cabrera, Enectali Figueroa-Feliciano, Sae Woo Nam

We report on the first astronomical observations with a photon-counting pixel detector that provides arrival time ((delta)R, less then or equal to} 0.15 eV)...

Was this page helpful?