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Displaying 1976 - 2000 of 2320

A Fast, Simple Wafer-level Hall-Mobility Measurement Technique

October 21, 2009
Author(s)
Liangchun (. Yu, Kin P. Cheung, Vinayak Tilak, Greg Dunne, Kevin Matocha, Jason P. Campbell, Kuang Sheng
Mobility is a good indicator of device reliability. High channel mobility is one of the biggest challenges especially in novel devices such as high-k based MOSFET, III-V devices and SiC power MOSFET etc. Accurate measurement of channel mobility is required

Adhesion, Copper Voiding, and Debonding Kinetics of Copper/Dielectric Diffusion Barrier Films

October 13, 2009
Author(s)
Ryan P. Birringer, Roey Shaviv, Thomas Mountsier, Jon Reid, Jian Zhou, Roy H. Geiss, David T. Read, Reinhold Dauskardt
Effects of the chemistry of electroplated copper films on stress-induced voiding and adhesion between the films and a SiN barrier layer are reported. The void density as observed by scanning electron microscopy decreased markedly with increasing Cu purity

A Combined Fit of Total Scattering and Extended X-ray Absorption Fine Structure Data for Local-Structure Determination in Crystalline Materials

October 5, 2009
Author(s)
Igor Levin, Victor L. Krayzman, Joseph C. Woicik, Terrell A. Vanderah, M. G. Tucker, Thomas Proffen
Reverse Monte Carlo (RMC) refinements of local structure using a simultaneous fit of x-ray/neutron total scattering and EXAFS data were developed to incorporate an explicit treatment of both single- and multiple-scattering contributions to EXAFS. The

A Novel Method to Covalently Functionalize Carbon Nanotubes with Isocyanates

September 30, 2009
Author(s)
Tinh Nguyen, Aline Granier, Kristen L. Steffens, Hajin Lee, Naomi Eidelman, Jonathan W. Martin
We have developed a novel method to covalently functionalize carbon nanotubes (CNTs) that carry free isocyanate (N=C=O) groups. NCO-functionalized CNTs (NCO-fCNTs) are very desirable, because the NCO group is highly reactive with hydrogen-active groups

Development of Soft Armor Conditioning Protocols for NIJ 0101.06: Analytical Results

September 24, 2009
Author(s)
Amanda L. Forster, Kirk D. Rice, Michael A. Riley, Guillaume Messin, Sylvain H. Petit, Cyril Clerici, Gale A. Holmes, Joannie W. Chin
This publication details the four major phases of analytical development work, coupled with several additional side studies, undertaken by the Office of Law Enforcement Standards in writing the Flexible Armor Conditioning Protocol in NIJ 0101.06. This

A Coherent Approach for Interrogating Polybenzoxazole Fibers for Residual Phosphoric Acid

September 17, 2009
Author(s)
Gale A. Holmes, Eun S. Park, Charles M. Guttman, Kathleen M. Flynn, John R. Sieber, Stephanie S. Watson, Kirk D. Rice
Because of the premature failure of soft-body armor that contains the active fiber poly [(benzo-[1,2-d:5,4-d']-benzoxazole-2,6-diyl)-1,4-phenylene] (PBO), the Office of Law Enforcement Standards (OLES) at the National Institute of Standards and Technology

MORPHOLOGY AND FRACTURE OF ENAMEL

September 16, 2009
Author(s)
Sang-Won Myoung, James J. Lee, Paul Constantino, Peter Lucas, Brian R. Lawn
Teeth are remarkable biological structures, brittle but resilient. Here we examine the inter-relation between enamel morphology and crack resistance by sectioning human molar teeth after loading to fracture. The sections reveal that many cracks start from

An electrical pulse-heated Kosky bar technique for high strain rate flow stress measurements of rapidly heated metals

September 13, 2009
Author(s)
Steven P. Mates, Stephen W. Banovic, Richard L. Rhorer, Timothy J. Burns, Eric P. Whitenton, D Basak
We have developed a unique electrical pulse-heated Kolsky Bar technique for measuring the flow stress of metals at heating rates of up to 6000 °C per second and strain rates up to 10^4 per second. Under these conditions, which are approaching those found

Studying Long-term Performance of a Nano-ZnO filled Waterborne Polyurethane Coating using Spectroscopies and Microscopies

September 9, 2009
Author(s)
Xiaohong Gu, Dongmei Zhe, Stephanie S. Watson, Guodong Chen, Minhua Zhao, Paul E. Stutzman, Deborah S. Jacobs, Tinh Nguyen, Joannie W. Chin, Jonathan W. Martin
Although inorganic UV absorbers such as zinc oxide (ZnO) and cerium oxide (CeO2) exhibit numerous advantages compared to organic UV absorbers, the mechanisms of how these nanoparticles affect the long-term performance of polymeric coatings are less than

Glassy Carbon as an Absolute Intensity Calibration Standard for Small Angle Scattering

August 19, 2009
Author(s)
Andrew J. Allen, Jan Ilavsky, Fan Zhang, Gabrielle G. Long, Pete R. Jemian
Absolute calibration of small-angle scattering (SAS) intensity data (in units of differential cross-section per unit sample volume per unit solid angle) is essential for many important aspects of quantitative SAS analysis, such as obtaining the number

Chemorheological Investigation on the Environmental Susceptibility of Sealants

August 18, 2009
Author(s)
Kar T. Tan, David J. Benatti, Christopher C. White, Donald L. Hunston, Deborah S. Jacobs
One of the major problems with any sealant system is its susceptibility to hostile environments, such as heat, moisture, ultraviolet radiation, oxygen, mechanical stress and biochemical attack. Prolonged exposure to these environments leads to substantial
Displaying 1976 - 2000 of 2320
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