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Journals

Constraint Effect in Deformation of Copper Interconnect Lines Subjected to Cyclic Joule Heating

November 26, 2007

Author(s)

David T. Read, Roy H. Geiss, Nicholas Barbosa

Using finite element analysis, we calculate the temperature range and the resulting cyclic Von Mises strain resulting from Joule heating, generated by the...

Fluorescence during Doppler cooling of a single trapped atom

November 26, 2007

Author(s)

Janus Wesenberg, Dietrich G. Leibfried, Brad R. Blakestad, Joseph W. Britton, Ryan Epstein, Jonathan Home, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R. Ozeri, Signe Seidelin, David J. Wineland

We investigate the temporal dynamics of Doppler cooling of a single trapped atom in the weak binding regime using a semi-classical model. We develop an...

TREC: Continuing Information Retrieval's Tradition of Experimentation

November 26, 2007

Author(s)

Ellen M. Voorhees

This article provides a high-level overview of the history, results and impact of NIST's Text REtrieval Conference (TREC). The article will appear in a special...

Defect behavior in aluminum interconnect lines deformed thermomechanically by cyclic joule heating

November 26, 2007

Author(s)

Roy H. Geiss, David T. Read

Transmission electron microscopy (TEM) was used to study the defects introduced into PVD Al-1wt% Si lines on SiO2/Si substrates that were deformed...

Nanomechanical Mapping with Resonance Tracking Scanned Probe Microscope

November 23, 2007

Author(s)

Anthony B. Kos, Donna C. Hurley

We present a new digital-signal-processor-based resonance tracking system for scanned probe microscopy (SPM) imaging. The system was developed to enable...

Quantifying the Surface Coverage of Conjugate Moleucles on Functionalized Nanoparticles

November 22, 2007

Author(s)

Leonard F. Pease III, De-Hao D. Tsai, Rebecca A. Zangmeister, M Zachariah, Michael J. Tarlov

Electrospray-differential mobility analysis (ES-DMA) represents an attractive tool to determine directly the coverage and conformation of long, flexible...

Test Sequence Generation for Integration Testing of Component Software

November 22, 2007

Author(s)

Leonard J. Gallagher, Jeff Offutt

Ensuring high object interoperability is a goal of integration testing for object-oriented software. When messages are sent, receiving objects should respond as...

Anisotropic Polarizability of Specific Semiconducting Nanotubes From Electro-Optical Measurements in Alternating Electric Fields

November 21, 2007

Author(s)

Jeffrey A. Fagan, Vardhan Bajpai, Barry J. Bauer, Erik K. Hobbie

Linear dichroism measurements on aqueous solutions of dispersed, size fractionated, single wall carbon nanotubes (SWNTs) are presented. The degree of SWNT...

Characterizing Polymer Brushes via Surface Wrinkling

November 21, 2007

Author(s)

Heqing Huang, Jun Y. Chung, Adam J. Nolte, Christopher M. Stafford

We present the application of surface wrinkling to measure the properties of polymer brush layers tethered to the surface of a deformable silicone substrate. It...

Learning Traversability Models for Autonomous Mobile Vehicles

November 21, 2007

Author(s)

Michael O. Shneier, Tommy Chang, Tsai Hong Hong, William P. Shackleford

Autonomous mobile robots need to adapt their behavior to the terrain over which they drive, and to predict the traversability of the terrain so that they can...

DUC in Context

November 21, 2007

Author(s)

Paul D. Over, Hoa T. Dang, Donna K. Harman

Recent years have seen increased interest in text summarization with emphasis on evaluation of prototype ststems. Many factors can affect the design of such...

Uncertainty budget for the NIST Electron Counting Capacitance Standard, ECCS- 1

November 21, 2007

Author(s)

Mark W. Keller, Neil M. Zimmerman, Ali L. Eichenberger

We measure a cryogenic, vacuum-gap capacitor by two methods: 1) charging it with a known number of electrons and measuring the resulting voltage, and 2) using a...

Block Copolymer Ordering With a Spatiotemporally Inhomogeneous Mobility

November 20, 2007

Author(s)

August W. Bosse, Jack F. Douglas, Brian Berry, Ronald L. Jones, Alamgir Karim

Motivated by recent measurements of zone annealing in block copolymer films at low temperatures, we implement a spatiotemporal mobility gradient with intrinsic...

Bulk Silicon Is Susceptible to Fatigue

November 19, 2007

Author(s)

Sanjit Bhowmick, Juan J. Melendez-Martinez, Brian R. Lawn

It has long been held that bulk silicon is immune from fatigue. We present contrary evidence demonstrating severe fatigue in macroscale cracks produced in...

Porous Silicon Biosensor for MS2 Virus

November 19, 2007

Author(s)

Andrea Rossi, Lili Wang, Vytas Reipa, Thomas E. Murphy

Nanoporous silicon was discovered in the 1950 s and has unique properties due to quantum confinement effects. It is produced by electrochemical etching in HF...

High-Q GaN nanowire resonators and oscillators

November 16, 2007

Author(s)

Shawn M. Tanner, Jason M. Gray, Charles T. Rogers, Kristine A. Bertness, Norman Sanford

We report high mechanical quality factors Q for GaN nanowire cantilevers grown by molecular beam epitaxy. Nanowires with 30-500 nm diameters and 5-20 υm lengths...

Nothing is Brittle at the Nanoscale

November 15, 2007

Author(s)

Pradeep N. Namboodiri, Doo-In Kim, Jaroslaw Grobelny, T Hawa, B Henz, Michael R. Zachariah

Fracture of nanoscale contacts formed between spherical probes and flat samples is studied using an atomic force microscope (AFM) in ultra high vacuum...

Shear-Induced Conductor-Insulator Transition in Melt Mixed Polypropylene-Carbon Nanotube Dispersions

November 15, 2007

Author(s)

Jan Obrzut, Jack F. Douglas, S B. Kharchenko, Kalman D. Migler

The blending of carbon nanotubes (CNT) into polymer matrices leads to intrinsically non-equilibrium materials whose properties can depend strongly on flow...

Thermodynamic Radiation Thermometry for the Next SI

November 15, 2007

Author(s)

Howard W. Yoon, Charles E. Gibson, V B. Khromchenko, George P. Eppeldauer, Robert R. Bousquet, Steven W. Brown, Keith R. Lykke

We describe the construction, the calibration and the use of the NIST Thermodynamic Radiation Thermometer (TRT) to measure the temperature of the gold-freezing...

Density, Viscosity, Speed of Sound, and Electrolytic Conductivity for the Ionic Liquid 1-Hexyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide and Its Mixtures with Water

November 15, 2007

Author(s)

Jason A. Widegren, Joe W. Magee

Thermophysical properties were measured at ambient pressure for a high-purity sample of the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl...

Magic Wavelengths for the np - ns Transitions in Alkali-Metal Atoms

November 15, 2007

Author(s)

B Arora, M S. Safronova, Charles W. Clark

Extensive calculations of the electric-dipole matrix elements in alkali-metal atoms are conducted using the relativistic all-order method. This approach is a...

Test of a Continuously Polarized 3He Neutron Spin Filter with NMR Based Polarization Inversion on a Single Crystal Diffractometer

November 15, 2007

Author(s)

G L. Jones, F Dias, Brian Collett, W C. Chen, Thomas R. Gentile, P M. Piccoli, M E. Miller, A J. Schultz, H Yan, X Tong, W M. Snow, W T. Lee, C Hoffmann, J Thomison

Characterization of 3-Color CARS in a 2-Pulse Broadband CARS Spectrum

November 15, 2007

Author(s)

Young Jong Lee, Marcus T. Cicerone, Yuexin Liu

We present a new and simple approach to broadband coherent anti-Stokes Raman scattering (CARS) microscopy that yields background-free vibrational spectra. We...

DSR-Based Directional Routing Protocol for Ad Hoc Networks

November 14, 2007

Author(s)

Bin Hu, Hamid Gharavi

In this paper, a Dynamic Source Routing (DSR)-based directional routing protocol is invoked for wireless ad hoc networks using directional antennas. This is...

Diffuse-Interface Theory for Structure Formation and Release Behavior in Controlled Drug Release Systems

November 14, 2007

Author(s)

D M. Saylor, C Y. Kim, D Patwardhan, James A. Warren

A common method of controlling drug release has been to incorporate the drug into a polymer matrix, thereby creating a diffusion barrier and slowing the rate of...

Monitoring Contaminants in Seabirds: The Importance of Specimen Banking

November 13, 2007

Author(s)

Stacy S. Vander-Pol, Paul R. Becker

Historically, contaminants in seabird tissues were monitored by considering physically visible effects; however, subtle, sub-lethal effects are also important...

Association and Redox Properties of the Putidaredoxin Reductase - Oxidized Nicotinamide Adenine Dinucleotide Complex

November 13, 2007

Author(s)

Vytautas Reipa, Marcia J. Holden, V L. Vilker

Putidaredoxin reductase (PdR) is the flavin protein that carries out the first electron transfer involved in the cytochrome P450cam catalytic cycle. In PdR, the...

Growth of Silicon Carbide Nanowires by a Microwave Heating-Assisted Physical Vapor Transport Using Group VIII Metal Catalysts

November 13, 2007

Author(s)

Siddarth Sundaresan, A V. Davydov, Mark D. Vaudin, James E. Maslar, Y -. Tian, M V. Rao

Growth of Silicon Carbide Nanowires by a Microwave Heating-Assisted Physical Vapor Transport Using Group VIII Metal Catalysts

November 13, 2007

Author(s)

Siddarth Sundaresan, Albert Davydov, Mark D. Vaudin, Igor Levin, James E. Maslar, Yong-lai Tian, M V. Rao

SiC nanowires are grown by a novel catalyst-assisted sublimation-sandwich (SS) method. This involves microwave heating-assisted physical vapor transport from a...

Origin of Adhesion in Humid Air

November 12, 2007

Author(s)

D -. Kim, Jaroslaw Grobelny, N Pradeep, Robert F. Cook

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