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Journals

Bubble Nucleation and Growth Anomaly for a Hydrophilic Microheater Attributed to Metastable Nanobubbles

March 23, 2007

Author(s)

Richard E. Cavicchi, C Avedisian

Nanobubbles on a hydrophilic surface immersed in water are inferred from the response of the surface to two consecutive heat pulses with a variable separation...

Broadband Electrical Characterization of Multiwalled Carbon Nanotubes and Contacts

March 22, 2007

Author(s)

Thomas M. Wallis, Stephen E. Russek, Pavel Kabos, Paul Rice

The electrical response of an individual multiwalled carbon nanotube (MWNT) and its contacts, welded to a coplanar waveguide (CPW), was measured up to 24 GHz...

N-Nitrosation of Amines by NO₂ and NO: A Theoretical Study

March 22, 2007

Author(s)

Yi-Lei Zhao, Stephen L. Garrison, Carlos A. Gonzalez, William D. Thweatt, M Marquez

Gas-phase nitrosation implies an alternative non-ionic pathway different from the nitrosonium-nitrosation by acidification of nitrite. Electronic structure...

Broadband Electrical Characterization of Multiwalled Carbon Nanotubes and Contacts

March 22, 2007

Author(s)

Paul Rice, T. M. Wallis, Stephen E. Russek, Pavel Kabos

We have welded an individual multiwalled carbon nanotube (MWNT) onto a microlithographically-patterned coplanar waveguide (CPW) and measured the electrical...

Contrasting Oxide Crystal Chemistry of Nb and Ta. The Structures of the Hexagonal Bronzes BaTa₂O₆ and Ba_0.93Nb₂.03^O₆

March 22, 2007

Author(s)

W G. Mumme, I E. Grey, Robert S. Roth, Terrell A. Vanderah

The crystal structures of the title phases have been determined as part of a general study of the photoelectrochemical activities of niobates and tantalates...

Environment-Controlled Spin Coating to Orient Microdomains in Thin Block Copolymer Films

March 20, 2007

Author(s)

Sangcheol Kim, R M. Briber, Alamgir Karim, Ronald L. Jones, H C. Kim

We demonstrate a simple and fast methodology to control the orientation of cylindrical microdomains in thin block copolymer films using environment-controlled...

A Broadband High Spectral Brightness Fiber-Based Two-Photon Source

March 19, 2007

Author(s)

Jingyun Fan, Alan L. Migdall

After characterizing the Raman scattering in a fused silica polarization-maintaining microstructure optical fiber, we built a fiber-based two-photon light...

High Carrier Mobility Polythiophene Thin Films: Structure Determination by Experiment and Theory

March 19, 2007

Author(s)

Dean M. DeLongchamp, Regis J. Kline, Eric K. Lin, Daniel A. Fischer, Lee J. Richter, Leah A. Lucas, Martin Heeney, Iain McCulloch, John E. Northrup

We exploit the unprecedented crystallinity of poly(2,5-bis(3-alkylthiophene-2-yl)thieno[3,2-b]thiophenes) (pBTTTs) high performance semiconducting polymers to...

Mid-Infrared Imaging With a Solid Immersion Lens and Broadband Laser Source

March 19, 2007

Author(s)

Chris A. Michaels

An approach to increasing the spatial resolution attainable with infrared (IR) microscopy involves the application of hemispherical solid immersion lenses (SIL)...

Estimation of Kov ts Retention Indices Using Group Contributions

March 17, 2007

Author(s)

Stephen E. Stein, Valeri I. Babushok, Robert L. Brown, Peter J. Linstrom

We have constructed a group contribution method for estimating Kov ts retention indices by using observed data from a set of diverse organic compounds. Our...

Ordering in Poly (3-alkylthiophene) Thin Films Determined with Polarized Optical Spectroscopies

March 16, 2007

Author(s)

M C. Gurau, Dean DeLongchamp, Brandon M. Vogel, Eric K. Lin, Daniel A. Fischer, S Sambasivan, Lee J. Richter

Asymmetrical Domain Nucleation and Unusual Magnetization Reversal of Ultrathin Co Films and Co/Pt Multilayers With Perpendicular Anisotropy

March 16, 2007

Author(s)

Yu L. Iunin, Yury P. Kabanov, Valerian I. Nikitenko, X M. Cheng, Alexander J. Shapiro, Robert D. Shull, C L. Chien

The features of magnetization reversal in Pt/[CO/Pt]_n}/Pt multilayers (n = 1, 2, 4) have been studied using magneto-optical Kerr microscopy. Asymmetric...

Wafer-Level Filling of Microfabricated Atomic Vapor Cells Based on Thin-Film Deposition and Photolysis of Cesium Azide

March 15, 2007

Author(s)

Li-Anne Liew, John M. Moreland, V Gerginov

The thin-film deposition and photodecomposition of cesium azide are demonstrated and used to fill arrays of miniaturized atomic resonance cells with cesium and...

Absolute frequency measurement of the neutral ⁴⁰Ca optical frequency standard at 657 nm based on microkelvin atoms

March 14, 2007

Author(s)

G Wilpers, Christopher W. Oates, Scott A. Diddams, A Bartels, Tara M. Fortier, Windell Oskay, James C. Bergquist, Steven R. Jefferts, Thomas P. Heavner, Thomas E. Parker, Leo W. Hollberg

We report an absolute frequency measurement of the optical clock transition at 657 nm in 40Ca with a relative uncertainty of 7.5x10 -15, the most accurate...

Substrate surface energy dependent morphology and dewetting in an ABC triblock copolymer

March 13, 2007

Author(s)

Thomas Epps, Dean M. DeLongchamp, Michael J. Fasolka, E Jablonski, Daniel A. Fischer

Estimating Common Vector Parameters in Interlaboratory Studies

March 13, 2007

Author(s)

Andrew L. Rukhin

The primary goal of this work is to extend two methodsof random effects models to multiparameter situation. These methods comprise the DerSimonian-Laird...

Phase Equilibria of BaO-R₂O₃-CuO_z Systems (R=Y and Lanthanides) Under CO₂-Free Conditions

March 13, 2007

Author(s)

Winnie K. Wong-Ng, Z Yang, Lawrence P. Cook, Julia Frank, Mario Loung, Qingzhen Huang

For applications of phase equilibria to the processing of second-generation high Tc superconductor-coated-conductors, phase diagrams constructed under carbonate...

Substrate Surface Energy Dependent Morphology and Dewetting In An ABC Triblock Copolymer Film

March 13, 2007

Author(s)

Thomas Epps, Dean M. DeLongchamp, Michael J. Fasolka, E Jablonski, Daniel A. Fischer

Numerical Path-Integration Technique for the Calculation of Transport Properties

March 13, 2007

Author(s)

E Kang, M Mansfield, Jack F. Douglas

We present a new technique for the computation of both the translational diffusivity and the intrinsic viscosity of macromolecules, and apply it here to...

An Athena Validation Pilot Showcase for Automotive Industry

March 12, 2007

Author(s)

Nenad Ivezic, Pat Snack

The Automotive Industry Action Group- (AIAG) led consortium, formed to execute an ATHENA project validation pilot, demonstrated initial results at the AIAG...

Higher-Order Boundary-Diffraction-Wave Formulation

March 11, 2007

Author(s)

Eric L. Shirley

Dissemination of 3D Visualizations of Complex Function Data for the NIST Digital Library of Mathematical Functions

March 11, 2007

Author(s)

Bonita V. Saunders, Qiming Wang, Sanford P. Ressler

The National Institute of Standards and Technology (NIST) is developing a digital library to replace the widely used National Bureau of Standards Handbook of...

Intermolecular potential and second virial coefficient of the water-nitrogen complex

March 6, 2007

Author(s)

Allan H. Harvey, Akyl S. Tulegenov, Richard J. Wheatley, Matthew P. Hodges

We construct a rigid-body (five-dimensional) potential-energy surface for the water-nitrogen complex using the systematic intermolecular potential extrapolation...

Controlling Diffusion and Exchange in Layer-by-Layer Assemblies

March 6, 2007

Author(s)

Nicole Zacharia, Dean DeLongchamp, Miguel Modestino, P T. Hammond

Here we present a layer-by-layer (LbL) assembled device architecture that serves as a model heterostructure to study the atypical assembly that can result from...

Effect of Line and Trench Profile Variation on Specular and Diffuse Reflectance From a Periodic Structure

March 5, 2007

Author(s)

Thomas A. Germer

Reflectance and ellipsometry, measured as functions of wavelength or angle, are becoming increasingly popular for assessing the dimensions and profiles of...

Phase Relations in the Ba-Y-Cu-O Films on SrTiO3 for the -Ex Situ BaF2- Process

March 5, 2007

Author(s)

Winnie K. Wong-Ng, Makoto Otani, Lawrence P. Cook, Mark D. Vaudin, James P. Cline, Ron Feenstra, T G. Holesinger

In situ x-ray diffraction was used to establish the phase relations in high-Tc superconductor BaY CuO films grown on SrTiO3 through the ex situ BaF2 process...

Bilateral Comparison Between NIST (USA) and NPLI (India) in the Pneumatic Pressure Region 0.4 MPa to 4.0 Mpa

March 5, 2007

Author(s)

Robert G. Driver, Douglas A. Olson, Nita Dilawar, A Bandyopadhyay

We report the results of a bilateral comparison of pressure measurement between NIST and NPLI using a piston gauge transfer standard (TS), designated as NPLI-4...

Eval-ware: Multimodal Interaction

March 5, 2007

Author(s)

John S. Garofolo, Richard T. Rose, Rainer Stiefelhagen

This paper is a review of multimodal programs, their evaluations, and online resources. For several years, research in unimodal recognition technologies has...

Why is a minute divided up into 60 seconds, an hour into 60 minutes, and only 24 hours in a day?

March 3, 2007

Author(s)

Michael A. Lombardi

An overview on the historical origins of the units of time interval, written for the "Ask the Experts" feature in Scientific American.

Using Monte Carlo Methods to Estimate Efficiencies of Gamma-Ray Emitters With Complex Geometries

March 2, 2007

Author(s)

Svetlana Nour, Matthew Mille, Kenneth G. Inn

In the event of a radioactive disaster, one of the biggest tasks is to estimate the radiation dosage received by people to determine the actions of emergency...

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