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

High Throughput Methods for Materials R&D: A Growing Effort at NIST

April 1, 2002

Author(s)

Leonid A. Bendersky, J D. Hewes

The U.S. private sector has indicated that the National Institute of Standards and Technology has a role to play in facilitating the implementation of high...

Anisotropic Ordering in Sheared Binary Fluids With Viscous Asymmetry: Experiment and Computer Simulation

April 1, 2002

Author(s)

H Jeon, Z Shou, A Chakrabati, Erik K. Hobbie

Optical measurements of the structure and morphology of phase-separating polymer blend under simple shear flow have been performed and the results are compared...

Neutron Reflectivity Studies of the Interface Between a Small Molecule Liquid Crystal and a Polymer

April 1, 2002

Author(s)

G W. Lynn, M D. Dadmun, Wen-Li Wu, Eric K. Lin, William E. Wallace

In this report, we elucidate the structure of a small molecule liquid crystal/polymer interface using specular neutron reflectivity. More specifically, we...

Absolute Frequency Measurement of the Iodine-Based Length Standard at 514.67 nm

April 1, 2002

Author(s)

R J. Jones, W Y. Cheng, K W. Holman, L Chen, John L. Hall

The absolute frequency of the length standard at 514.67 mn based on the molecular iodine ( 127/ 2) transition of P(13) 43-0 component a 3 is'measured using a...

A Fermi Gas of Atoms

April 1, 2002

Author(s)

Deborah S. Jin

Cooper pairing of atoms in a gas would provide a new and unique example of a fermionic condensate. However, recent theoretical treatments,by Murray Holland at...

Designing Neutral-Atom Nanotraps With Integrated Optical Waveguides

April 1, 2002

Author(s)

J P. Burke, S G. Chu, Garnett W. Bryant, Carl J. Williams, Paul S. Julienne

Integrated optical structures offer the intriguing potential of compact, reproducible waveguide arrays, rings, Y-junctions, etc, that could be used to design...

Resonant Control of Elastic Collisions in an Optically Trapped Fermi Gas of Atoms

April 1, 2002

Author(s)

T Loftus, C A. Regal, J L. Ticknor, J L. Bohn, Deborah S. Jin

We have loaded an ultracold gas of fermionic atoms into a far off resonance optical dipole trap and precisely controlled the spin composition of the trapped gas...

Phase Stabilization of Ultrashort Optical Pulses

April 1, 2002

Author(s)

Steven T. Cundiff

New methods have recently been developed to measure the carrier-envelope phase evolution of ultrashort optical pulses. These methods utilize a powerful...

Direct RF to Optical Frequency Measurements With a Femtosecond Laser Comb

April 1, 2002

Author(s)

Scott A. Diddams, D J. Jones, Jun Ye, S T. Cundiff, John L. Hall, J K. Ranka, R S. Windeler

By spanning an optical octave (> 300 THz) with a broadened femtosecond laser frequency comb, we directly measure optical frequency standards at 1064/532nm, 633...

Scattering Length of the Ground-State Mg+Mg Collision

April 1, 2002

Author(s)

Eite Tiesinga, Svetlana A. Kotochigova, Paul S. Julienne

We have constructed the $XA I \Sigma_g^+ $ potential for the collision between two ground state Mg atoms andanalyzed the effect of uncertainties in the shape of...

The Bogoliubov Approach to Number Squeezing of Atoms in an Optical Lattice

April 1, 2002

Author(s)

K Burnett, M Edwards, Charles W. Clark, M Shotter

We describe an approach for finding the number squeezing for arrays of atoms in an optical lattice. It is based on a straightforward extension of the Bogoliubov...

New Degenerate Metal-Oxide Electrodes for Nearly Reversible Direct Electron Transfer to the Redox Proteins

April 1, 2002

Author(s)

Gintaras Valincius, Vytautas Reipa, M P. Mayhew, V L. Vilker

Heavily doped cadmium tin oxide (CTO) film electrodes were developed for fast electron exchange with redox proteins. The metal oxide films showed nearly...

Reaction Kinetics in Ionic Liquids as Studied by Pulse Radiolysis: Redox Reactions in the Solvents Methyltributylammonium Bis(trifluoroniethyl-sulfonyl)imide and N-Butylpyridinium Tetrafluoroborate

April 1, 2002

Author(s)

D Behar, Pedatsur Neta, C R. Schultheisz

Rate constants for several reduction and oxidation reactions were determined by pulse radiolysis in three ionic liquids and compared with rate constants in...

Influence of Processing Rate and Formulation on the Interface Strength of Vinyl Ester/E-Glass Composites

April 1, 2002

Author(s)

Walter G. McDonough, Joy Dunkers, Gale A. Holmes, E Feresenbet, Y H. Kim, Richard~undefined~undefined~undefined~undefined~undefined Parnas

The single fiber fragmentation test was used to investigate the effect of gelation time on interfacial shear properties of fast reacting resin systems. We...

Applications of Morphological Stability Theory

April 1, 2002

Author(s)

Sam R. Coriell, Geoffrey B. McFadden

Recent applications of mormhological stability theory are reviewed. For growth of a binary alloy from the melt, the temperature-dependence of the solute...

Transpinnor: A New Giant Magnetoresistive Spin-Valve Device

April 1, 2002

Author(s)

E J. Torok, S Zurn, S Bae, P J. Chen, William F. Egelhoff Jr., L Sheppard, R Spitzer, J Judy

This paper discusses the fundamental physics and device-operating mechanisms of Transpinnor, a kind of multi-functional active solid state device, newly...

Critical Behavior of a Strain Percolation Model for Metals

April 1, 2002

Author(s)

Y Shim, Lyle E. Levine, R M. Thomson

Extensive simulations of a strain percolation model for a deforming metal have been performed to examine its strain behavior. We find that the total strain...

Carbon: A Bane for Giant Magnetoresistance Magnetic Multilayers

April 1, 2002

Author(s)

D X. Yang, H D. Chopra, B Shashishekar, P J. Chen, William F. Egelhoff Jr.

This study reports the highly deleterious role of small amount of carbon on the structure and magnetic properties of giant magnetoresistance NiO-Co-Cu-based...

Curing Light Intensity and Depth of Cure of Resin-Based Composites Tested According to International Standards

April 1, 2002

Author(s)

P L. Fan, R Schumacher, K Azzolin, R Geary, F Eichmiller

Several factors affect light curing of a resin-based composite: the material's composition (including opacity), the choice of photoinitiators and the...

Apparatus to Measure Wafer Curvature for Multilayer Systems in a Vacuum Furnace

April 1, 2002

Author(s)

A B. Mann, J Tapson, D van Heerden, A C. Lewis, Daniel Josell, Timothy P. Weihs

A laser-based technique for measuring the curvature of a multilayer/substrate couple is described. Unlike most wafer curvature systems, the instrument described...

Extensional Deformation, Cohesive Failure, and Boundary Conditions During Sharkskin Melt Fracture

April 1, 2002

Author(s)

Kalman D. Migler, Y Son, F Qiao, Kathleen M. Flynn

We measure the flow kinetics of a polyethylene extruded through the exit of a capillary tube in order to understand the nature of sharkskin, a surface roughness...

Competing Growth Kinetics in Simultaneously Crystallizing and Phase-Separating Polymer Blends

April 1, 2002

Author(s)

Haonan Wang, K Shimizu, H W. Kim, Erik K. Hobbie, G Z. Wang, Charles C. Han

The kinetic interplay between crystallization and phase separation in a polymer blend has been examined. By controlling the relative quench depths for liquid...

Co-Extrusion of Biocompatible Polymers for Scaffolds With Co-Continuous Morphology

April 1, 2002

Author(s)

N. R. Washburn, Carl Simon Jr., Alessandro Tona, H M. Elgendy, Alamgir Karim, Eric J. Amis

A methodology for the preparation of porous scaffolds for tissue engineering using co-extrusion is presented. Poly(espilon-caprolactone) is blended with poly...

In-Situ Small-Angle X-Ray Scattering Study of Crystallization in Poly (Ethylene/Hexene) Copolymer Subjected to Step Shear

April 1, 2002

Author(s)

Z G. Wang, Haonan Wang, B S. Hsiao, D Gersappe, Charles C. Han

Results from in-situ time-resolved SAXS measurement on PEH melt crystallization, subjected to a step shear, indicate that an oriented lamellar structure is...

Structural Comparison of Hydrogen Silsesquioxane Based Porous Low-k Thin Films Prepared With Varying Process Conditions

April 1, 2002

Author(s)

V. J. Lee, Eric K. Lin, Haonan Wang, Wen-Li Wu, W Chen, T A. Deis, E S. Moyer

The structure of hydrogen silsesquioxane (HSQ) based porous low dielectric constant (low-k) films (XLK ) prepared with varying process conditions are...

Reactive Scattering of F + HD -> HF(upsilion},J) + D: HF(upsilion},J) Nascent Product State Distributions and Evidence for Quantum Transition State Resonances

April 1, 2002

Author(s)

W W. Harper, S A. Nizkorodov, David Nesbitt

Single collision reactive scattering dynamics of F + HD -> HF(Ņ,J) + D have been investigated exploiting high-resolution (δυnearly equal to}0.001 cm -1)infrared...

Sub-Doppler Molecular-Iodine Transitions Near the Dissociation Limit (523-498 NM)

April 1, 2002

Author(s)

W Y. Cheng, L Chen, T H. Yoon, John L. Hall, Jun Ye

A widely tunable and high-resolution spectrometer based on a frequency doubled Ti: sapphire laser is used to explore sub-Doppler transitions of iodine molecules...

Atomic Force Microscopy Study of the Growth and Annealing of Ge Islands on Si(100)

April 1, 2002

Author(s)

B Liu, C L. Berrie, T Ma, J Bright, S R. Leone

Atomic force microscopy is used to study the growth and annealing of Ge islands on Si(100) by molecular beam epitaxy. The Ge island shape, size distribution...

Comparison of Near-Infrared Transmittance and Reflectance Measurements Using Dispersive and Fourier Transform Spectrophotometers

April 1, 2002

Author(s)

James J. Butler, H Park, P Y. Barnes, E A. Early, C van Eijk-Olij, A E. Zoutman, S van Buller-Leeuwen, J G. Schaarsberg

A spectrophotometer based on an integrating sphere coupled to a commercial FTIR instrument has been constructed for regular spectral transmittance and...

Probing Potential Surfaces for Hydrogen Bonding: Near-Infrared Combination Band Spectroscopy of Van Der Waals Stretch (Ņ₄) and Geared Bend (Ņ₅) Vibrations in (HCl)₂

April 1, 2002

Author(s)

M Farnik, S Davis, M D. Schuder, David Nesbitt

High resolution infrared spectra of the two low frequency intermolecular modes - van der Waals stretch (Ņ 4) and geared bend (Ņ 4) and geared bend (Ņ 5) of (HCI...

Was this page helpful?