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Journals

Review of SI Traceable Force Metrology for Instrumented Indentation and Atomic Force Microscopy

September 23, 2005

Author(s)

David B. Newell, John A. Kramar, Jon R. Pratt, Douglas T. Smith

This paper reviews the current status of small force metrology for quantitative instrumented indentation and atomic force microscopy (AFM), and in particular...

Ultracold Atoms Confined in an Optical Lattice Plus Parabolic Potential: A Closed-Form Approach

September 22, 2005

Author(s)

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

We discuss interacting and non-interacting one dimensional atomic systems trapped in an optical lattice plus a parabolic potential. We show that, in the tight...

Thermodynamic Control of Germanium Quantum Dot Growth on Silicon

September 20, 2005

Author(s)

Richard J. Wagner, E Gulari

Moisture Diffusion and Temperature History Models for Thin Organic Coatings Exposed to Ambient Air

September 20, 2005

Author(s)

William C. Thomas, Christopher C. White, Mark R. VanLandingham

Baseline models are developed for predicting moisture concentration and temperature in extremely thin polymeric films bonded to impermeable substrate materials...

Entropy Theory of Polymer Glass-Formation Revisited. I. Characteristic Temperatures, Fragility, and Relaxation Times

September 20, 2005

Author(s)

J Dudowicz, Karl Freed, Jack F. Douglas

Considerable physical evidence supports the idea of Gibbs and DiMarzio (GD) that glass-formation arises when the configurational entropy of a liquid becomes...

Atomic vapor cells for chip-scale atomic clocks with improved long-term frequency stability

September 15, 2005

Author(s)

Svenja A. Knappe, Vladislav Gerginov, P Schwindt, V Shah, Leo W. Hollberg, John E. Kitching, Hugh Robinson

A novel technique for microfabricating alkali atom vapor cells is described, in which alkali atoms are evaporated into a micromachined cell cavity through a...

High Field X-Ray Diffraction Studies on Gd₅(Ge_2-xFe_x)Si₂ (x = 0.05 and 0.2)

September 15, 2005

Author(s)

Jim L. Her, Keiichi Koyama, Kazuo Watanabe, Virgil Provenzano, F Fu, Robert D. Shull

We performed the X-ray diffraction measurements in magnetic fields up to 5 T for Gd5(Ge1.95Fe0.05)Si2 and Gd5(Ge1.8Fe0.2)Si2 which are noted recently as related...

Mutual phase-locking of microwave spin torque nano-oscillators

September 15, 2005

Author(s)

Shehzaad F. Kaka, Matthew Pufall, William Rippard, Thomas J. Silva, Stephen E. Russek, Jordan A. Katine

The spin torque effect that occurs in nanometre-scale magnetic multilayer devices can be used to generate steady- state microwave signals in response to a d.c...

Challenges in Characterizing Sealant

September 14, 2005

Author(s)

Christopher C. White, Donald L. Hunston

Sealant is one of the very few major consumer products valued primarily for its rheological and adhesive properties. While, these materials may appear to be...

Numerical Modeling of Turbulent Diffusion Flames Using Large Eddy Simulation and Finite Volume Method for Radiation

September 14, 2005

Author(s)

Simo A. Hostikka, Kevin B. McGrattan, Anthony Hamins

The thermal environment in turbulent flames is studied by large eddy simulation and finite volume method for radiation transport. The spectral dependence of the...

Multilayer and functional coatings on carbon nanotubes using atomic layer deposition

September 14, 2005

Author(s)

Cari F. Herrmann, F Fabreguette, Dudley Finch, Roy H. Geiss, S M. George

Atomic layer deposition can be used to deposit ultra thin and conformal films on substrates with very high aspect ratios such as nanotubes and nanowires. In...

Operation of the NIST-F1 Cesium Fountain Primary Frequency Standard with a Maser Ensemble

September 13, 2005

Author(s)

Thomas E. Parker, Steven R. Jefferts, Thomas P. Heavner, Elizabeth A. Donley

The operation of a caesium fountain primary frequency standard is greatly influenced by the characteristics of two other important capabilities. The first is a...

NIST F1: Recent improvements and a resulting accuracy of δf/f=0.53x10^-15

September 13, 2005

Author(s)

Thomas P. Heavner, Steven R. Jefferts, Elizabeth Donley, Jon H. Shirley, Tom Parker

In the last several years we have made many improvements to NIST-F1 (a laser-cooled Cs fountain primary frequency standard) resulting in over a factor of 2...

Failure of Curved Brittle Layer Systems from Radial Cracking in Concentrated Surface Loading

September 13, 2005

Author(s)

Mattheq Rudas, T Qasim, M T. Bush, Brian R. Lawn

A study is made of radial crack evolution in curved brittle layers on compliant support substrates. Three-dimensional boundary element analysis (BEA) is used to...

Observed Correlation of Sn Oxide film to Sn Whisker Growth in Sn-Cu electrodeposit for pb-free Solders

September 11, 2005

Author(s)

Kil-Won Moon, C E. Johnson, Maureen E. Williams, O Kongstein, Gery R. Stafford, C A. Handwerker, William J. Boettinger

To evaluate the effects of the oxide film on Sn whisker growth, a bright Sn-Cu electrodeposit was tested in an ultrahigh vacuum chamber with Auger analysis...

Examination of Multicomponent Diffusion Between Two Ni-Base Superalloys

September 11, 2005

Author(s)

Carelyn E. Campbell, William J. Boettinger, T Hansen, P Merewether, B A. Mueller

The interdiffusion at 1293 degree C between two multicomponent Ni-base superalloys, Rene-N4 and ene-N5, was assessed by measuring the composition vs. distance...

Combinatorial Optimization of Ti/Al/Ti/Au ohmic Contacts to n-GaN

September 11, 2005

Author(s)

Albert Davydov, Abhishek Motayed, William J. Boettinger, Richard S. Gates

Tuning Cell Adhesion on Gradient Poly(2-Hydroxyethyl Methacrylate)-Grafted Surfaces

September 11, 2005

Author(s)

Ying Mei, Tao Wu, Chang Xu, K J. Langenbach, John T. Elliott, Kathryn L. Beers, Eric J. Amis, N Washburn

Reduction in Dentin Permeability Using a Slurry Containing Dicalcium Phosphate and Calcium Hydroxide

September 9, 2005

Author(s)

Ai-Shuan(Maria) Cherng, Shozo Takagi, Laurence C. Chow

Treatments that obdurate dentin tubules have been used for reducing dentin hypersensitivity. This study was to determine the effect of a treatment with a slurry...

Wetting-Dewetting Transition Line in Thin Polystyrene Films

September 9, 2005

Author(s)

H Raghavan, K M. Ashley, A Seghal, Jack F. Douglas, Alamgir Karim

We review recent advances in the application of combinatorial methods to polymer thin film characterization. Combinatorial methods allow the rapid exploration...

ISO/IEC JTC 1 SC 37's Response to the Global Challenges and Customer Needs for Strong Personal Authentication and Enhanced Security

September 5, 2005

Author(s)

Fernando L. Podio

Biometric technologies are able to establish or verify personal identity against previously enrolled individuals. Used alone or together with other...

Low-Leakage Superconducting Tunnel Junctions with a Single-Crystal Al2O3 Barrier

September 5, 2005

Author(s)

Seongshik Oh, Katarina Cicak, Kevin Osborn, Raymond Simmonds, David P. Pappas, Robert Mcdermott, Ken B. Cooper, Matthias Steffen, John M. Martinis

We have developed a two-step growth scheme for single-crystal Al2O3 tunnel barriers. The barriers are epitaxially grown on single-crystal rhenium (Re) base...

Rheopexy of Synovial Fluid and Protein Aggregation

September 5, 2005

Author(s)

Katherine Oates, Wendy Krause, Ronald L. Jones, R H. Colby

Bovine synovial fluid and albumin solutions of similar concentration are rheopectic (stress increases with time in steady shear). This unusual flow...

Growth Habits and Defects in ZnO Nanowires Grown on GaN/sapphire Substrates

September 5, 2005

Author(s)

A V. Davydov, Babak Nikoobakht, Norman Sanford, Pavel Mogilevsky

Predicting Gaseous Air Cleaner Performance in the Field

September 4, 2005

Author(s)

Cynthia H. Reed, Steven J. Nabinger, Steven Emmerich

As part of an ongoing effort to better understand the performance of indoor air cleaners in real buildings, the National Institute of Standards and Technology...

X-Ray Spectrometry and Spectrum Image Mapping at Output Count Rates Above 100 kHz with a Silicon Drift Detector on a Scanning Electron Microscope

September 1, 2005

Author(s)

Dale E. Newbury

A third generation silicon drift detector (SDD), a silicon multicathode detector (SMCD), was tested as an analytical x-ray spectrometer on a scanning electron...

Systematic Variation of Interfacial Phase Reactivity in Dental Nanocomposites

September 1, 2005

Author(s)

K S. Wilson, K Zhang, Joseph M. Antonucci

The goal of this study was to determine the effect of varying the chemistry of the interfacial phase on critical composite properties in dental nanocomposite...

Specular X-Ray Reflectivity and Small Angle Neutron Scattering for Structure Determination of Ordered Mesoporous Films

September 1, 2005

Author(s)

B D. Vogt, Hae-Jeong Lee, Wen-Li Wu, Yiping Liu

The structure of mesoporous materials, in terms of morphology and orientation, is critical for numerous applications. X-ray reflectivity (XR) and small angle...

Chemistry of Silanes Interfaces in Dental Polymers and Composites

September 1, 2005

Author(s)

Joseph M. Antonucci, Sabine H. Dickens, Bruce O. Fowler, Hockin D. Xu, Walter G. McDonough

The performance and service life of glassor ceramic-filled polymeric composites depend on the nature of their resin, filler and interfacial phases as well as...

Effect of carboxymethyl cellulose on aqueous processing of natural graphite anodes and their electrochemical performance for lithium batteries

September 1, 2005

Author(s)

James J. Lee, U Paik, Vincent A. Hackley, V Choi

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