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Journals

Assessment of the Cr-B System and Extrapolation to the Ni-Al-Cr-B Quarternary System

September 1, 2002

Author(s)

Carelyn E. Campbell, Ursula R. Kattner

The Cr-B system is re-assessed treating boron as an interstitial element in the disordered solid solution fcc and bcc phases. The binary assessment is in good...

Normal Mode Mixing and Ferromagnetic Resonance Linewidth

September 1, 2002

Author(s)

A B. Kunz, Robert D. McMichael

This spin wave modes for a uniform film are perturbed by the inclusion of inhomogeneities into the system. The resulting perturbed Hamiltonianis diagonalized to...

Magnetic Properties of Ultrathin Laminated Co/Cu Films Prepared by Electrodeposition

September 1, 2002

Author(s)

M Shima, L Salamanca-Riba, Thomas P. Moffat, Robert D. McMichael

The magnetic properties of a series of electrodeposited [Co(x ML)/Cu(17 ML)]100 multilayers have been examined as a function of the cobalt layer thickness. The...

Crystal Structures and Reference Diffraction Patterns of BaSrR₄O₈

September 1, 2002

Author(s)

Winnie K. Wong-Ng, James A. Kaduk, J Dillingham

The structure of BaSrR4O8 (where R = La, Nd, Sm, Gd, Eu, Dy, Ho, Y, Er, Tm, Yb, and Lu) has been investigated, and the X-ray reference patterns of these...

Theory of Elastic Wave Propagation in an Anisotropic Film on an Anisotropic Substrate: TiN Film on Single Crystal Si

September 1, 2002

Author(s)

Vinod K. Tewary

The delta function representation of the elastodynamic Green's function is used to derive an expression for the elastic wave forms on the surface of an...

What Do We Learn From the Local Geometry of Glass-Forming Liquids?

September 1, 2002

Author(s)

Francis W. Starr, Srikanth Sastry, Jack F. Douglas, S C. Glotzer

We examine the local geometry of a simulated glass-forming polymer melt. Using the Voronoi construction, we find that the distributions of Voronoi volume $P(v_V...

The Relationship Between Grain Size and the Surface Roughening Behavior of Al-Mg Alloys

September 1, 2002

Author(s)

Mark R. Stoudt, Richard E. Ricker

The inhomogeneous surface deformation generated during metal forming presents significant challenges to the use of high-strength, lightweight alloys in...

Templating of Inorganic Nanoparticles by PAMAM/PEG Dendrimer-Star Polymers

September 1, 2002

Author(s)

R C. Hedden, Barry J. Bauer, A P. Smith, Franziska Grohn, Eric J. Amis

Star polymers with a narrow distribution of sizes were labeled with fluorescent CdS nanoparticles, creating a new class of fluorescent probe molecules. Highly...

Wavelength Standards in the Ultraviolet

September 1, 2002

Author(s)

Gillian Nave, Craig J. Sansonetti

We have made accurate wavelength measurements for lines of Pt 1 and II, Fe I, Ge I, and Kr II in the region 1800 to 3100 . New microlithography tools that are...

In Situ Raman Spectroscopic Investigation of Stainless Steel Hydrothermal Corrosion

September 1, 2002

Author(s)

James E. Maslar, Wilbur S. Hurst, Walter J. Bowers Jr., Jay H. Hendricks

In situ Raman spectroscopy was employed to investigate corrosion of 304L stainless steel in air-saturated water at a pressure of 25.2 Mpa and temperatures up to...

Computational Study of the Reactions of H Atoms With Chlorinated Alkanes Isodesmic Reactions for Transition States

September 1, 2002

Author(s)

Vadim D. Knyazev

Reactions of H atoms with methane, ethane, and chlorinated methanes and ethanes were studied by computational methods. An approach to estimating reaction rate...

Algal Rhodopsins: Phototaxis Receptors Found at Last

September 1, 2002

Author(s)

K D. Ridge

The discovery of two distinct Chlamydomonas sensory receptors responsible for phototaxis reveals additional diversity among the microbial rhodopsins. Sequence...

Calibration of Electron Microscopes: How to Do This, How Often, Pitfalls and Problems

September 1, 2002

Author(s)

Michael T. Postek

This is the highly edited text of a presentation made during the Microscopy and Microanalysis session on core facility management regarding the calibration of...

Two Primary Standards for Low Flows of Gases

September 1, 2002

Author(s)

Robert F. Berg, S A. Tison

We describe two primary standards for gas flow in the range from 0.1 to 1000 mol/s. (1 mol/s =1.3448 standard cubic centimeters per minute.) The first standard...

Thermal and Flammability Properties of Polypropylene-Carbon Nanotube Composites

September 1, 2002

Author(s)

Takashi Kashiwagi, E A. Grulke, J N. Hilding, Richard H. Harris Jr., W H. Awad, Jack F. Douglas

Nanocomposites based on polypropylene and carbon nanotubes (up to 2 vol.-%) were melt blended, yielding good dispersion of the nanotubes without using any...

Optical Reflectance of Metallic Coatings: Effect of Aluminum Flake Orientation

September 1, 2002

Author(s)

Li Piin Sung, Maria E. Nadal, M E. McKnight, Egon Marx, B Laurenti

The orientation of platelet-like pigments in coatings is affected by the processing conditions resulting in appearance variations of the final product. A set of...

Correlation of Molecular Orientation with Adhesion at Polystyrene/Soild Interfaces

September 1, 2002

Author(s)

P T. Wilson, Lee J. Richter, William E. Wallace, Kimberly A. Briggman, John C. Stephenson

Vibrationally resonant sum-frequency generation (VR-SFG) has been used to characterize the molecular orientation of the phenyl groups at the interface between...

Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point

September 1, 2002

Author(s)

Piotr A. Domanski, William V. Payne

Performance of R22 and R410A split air conditioners was evaluated experimentally at the ambient temperature range from 82 F to 135 F. Capacity and EER decreased...

Prediction of Cement Physical Properties by Virtual Testing

September 1, 2002

Author(s)

Dale P. Bentz, C Haecker, X Feng, Paul E. Stutzman

Assuring the quality of the massive quantities of cement produced worldwide each year is a daunting task. Currently, the cement industry performs extensive...

Relating Laboratory and Outdoor Exposure of Coatings: II. Effects of Relative Humidity on Photodegradation and the Apparent Quantum Yield of Acrylic-Melamine Coatings

September 1, 2002

Author(s)

Tinh Nguyen, Jonathan W. Martin, E Byrd, E Embree

The effects of relative humidity (RH) from

Distinguishing the Relative Contribution of Fossil Fuel and Biomass Combustion Aerosols Deposited at Summit, Greenland through Isotopic and Molecular Characterization of Insoluble Carbon

September 1, 2002

Author(s)

J F. Slater, Lloyd A. Currie, J E. Dibb, Bruce A. Benner Jr

Although the earth's polar regions are isolated from most industrial activity, combustion-generated particles from both fossil fuel and biomass burning impact...

A Qualitative Comparison of Smokeless Powder Measurements

September 1, 2002

Author(s)

William A. MacCrehan, M R. Reardon

Improving the Recoveries of Unstable N-Chloramines Determined by Liquid Chromatography/Postcolumn Electrochemical Detection

September 1, 2002

Author(s)

Mary Bedner, William A. MacCrehan, G. R. Helz

Crack Growth in Soda-Lime Silicate Glass Near the Static Fatigue Limit

September 1, 2002

Author(s)

Sheldon M. Wiederhorn, A Dretzke, J Rodel

The atomic force microscope (AFM) was used to explore the nature of features formed on the surfaces of cracks in soda-lime-silicate glass that were held at...

Calibration of Electron Microscopies: How to Do This, How Often, Pit-falls, and Problems

September 1, 2002

Author(s)

Michael T. Postek

This is the highly edited text of a presentation made during the Microscopy and Microanalysis session on core facility management regarding the calibration of...

Flow Characterization of Flickering Methane/Air Diffusion Flames Using Particle Image Velocimetry

September 1, 2002

Author(s)

G Papadopoulos, Rodney A. Bryant, William M. Pitts

Phase-resolved measurements of the velocity field in acoustically forced, flickering laminar co-flowing methane/air diffusion flames have been made. Identical...

Enclosure Effects on Flame Spread Over Solid Fuels in Microgravity

September 1, 2002

Author(s)

Y N. Nakamura, Takashi Kashiwagi, Kevin B. McGrattan

Enclosure effects on the transition from localized ignition to subsequent flame spread over a thermally-thin solid fuel in microgravity are investigated...

Spin-Current Induced Magnetotransport in Co/Cu/Co Nanostructures

September 1, 2002

Author(s)

Fred B. Mancoff, Stephen E. Russek

We report measurements on sub-100 nm current-perpendicular-to-place Co/Cu/Co spin-valves. The giant magnetoresistance versus applied magnetic field shows the...

Acoustic Spectroscopy of Lithium Niobate: Elastic and Piezoelectric Coefficient

September 1, 2002

Author(s)

H Ogi, Y Kawashima, M Hirao, H M. Ledbetter

We report the first Simultaneous measurement of a crystal's complete elastic and piezoelectric coefficients: C if, e ijk. The studied crystal was lithium...

Transport of Quantum States and Separation of Ions in a Dual RF Ion Trap

September 1, 2002

Author(s)

Mary A. Rowe, A. Ben-Kish, B. DeMarco, D. Leibfried, V. Meyer, James A. Beall, J. Britton, J. Hughes, Wayne M. Itano, Branislav M. Jelenkovic, C. Langer, T. Rosenband, David J. Wineland

We have investigated ion dynamics associated with a dual linear ion trap where ions can be stored in and moved betweenn two distinct locations. Such a trap is a...

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