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Materials

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Displaying 2101 - 2125 of 2366

New Insight into NBTI Transient Behavior Observed from Fast-GM Measurements

September 1, 2008
Author(s)
Jason P. Campbell, Kin P. Cheung, John S. Suehle
Fast-IDVG measurements have become an increasingly important tool to examine MOSFET transient degradation. The threshold voltage (VTH) extracted from fast-IDVG measurements is often used to infer the transient behavior of trapped charged in the gate

Band offsets of atomic-layer-deposited Al2O3 on GaAs and the effects of surface treatment.

August 27, 2008
Author(s)
Nhan V. Nguyen, Oleg A. Kirillov, Weirong Jiang, Wenyong Wang, John S. Suehle, P. D. Ye, Y. Xuan, N. Goel, Kwang-Woo Choi, Wilman Tsai
In this letter we report the band offsets of the Al/Al2O3/GaAs structure determined by internal photoemission and spectroscopic ellipsometry. The energy barrier height at the Al2O3 and sulfur-passivated GaAs interface is found to be 3.0 eV, which is

CTOA Results for X65 and X100 Pipeline Steels:Influence of Displacement Rate

August 1, 2008
Author(s)
Roni Reuven, Christopher N. McCowan, Elizabeth S. Drexler, Avigdor Shtechman, Philippe P. Darcis, John M. Treinen, R. Smith, J. Merritt, Thomas A. Siewert, Joseph D. McColskey
The toughness and plasticity of steel generally decreases with increasing testing rate. The crack tip opening angle (CTOA) was measured on two types of commercial pipeline steels, API-X65 and API-X100 at a range of displacement rates to characterize rate

Dynamic Apparatus for the CTOA Measurement in Pipeline Steels

August 1, 2008
Author(s)
Avigdor Shtechman, Christopher N. McCowan, Roni Reuven, Elizabeth S. Drexler, Philippe P. Darcis, John M. Treinen, R. Smith, J. Merritt, Thomas A. Siewert, Joseph D. McColskey
When a crack initiates and propagates in a pressurized pipe the only thing that might stop this high-velocity event is the release of internal pressure (decompression) resulting in a deceleration in the crack-propagation rate. This deceleration can be

Materials Science &Technology (MS&T) 2008 Conference & Exhibition

July 18, 2008
Author(s)
Winnie K. Wong-Ng
The Materials Science &Technology 2008 Conference & Exhibition took place in the David L. Lawrence Convention Center in Pittsburgh, Pennsylvania from October 5-9. The MS&T 2008 Conference was a great success, with a total more than 1000 papers presented in

A Molecular Model for Toughening in Double-Network Hydrogels

June 18, 2008
Author(s)
Vijay Tirumala, Sanghun Lee, Taiki Tominaga, Eric K. Lin, Jian P. Gong, Paul D. Butler, Wen-Li Wu
A molecular mechanism is proposed for the toughness enhancement observed in double network (DN) hydrogels prepared from poly (2 acrylamido, 2-methyl, 1-propanesulfonicacid) (PAMPS) polyelectrolyte network and polyacrylamide (PAAm) linear polymer. It is an

Guide to Using Programs to Estimate UV Dosage and Damage

June 3, 2008
Author(s)
Brian Dickens
The system of programs described in this paper is concerned with estimating the damage ensuing from exposure of specimens in dry and humid atmospheres to UV and visible radiation covering the solar range. Damage is monitored quantitatively by changes in IR

Peer Review Report: PHMSA Programs

May 14, 2008
Author(s)
Thomas A. Siewert, Michael Else, Richard J. Fields, Joe C. Bowles, L. J. Moore, Philip D. Flenner, Mario Macia, Jerry Rau, Steven E. Powell
The Pipeline and Hazardous Materials Safety Administration s (PHMSA) Pipeline Safety Research and Development (R&D) Program held its first structured peer review of active research projects in February 2006 and the most recent peer review on May 2008. The

Peer review report: Pipeline and hazardous materials safety administration, pipeline safety research and development program

May 14, 2008
Author(s)
Richard J. Fields, Louis E. Hayden, Thomas J. O'Grady, Joseph D. McColskey, Joe C. Bowles, T. R. Webb, Christopher N. McCowan, Dennis W. Hinnah, Ronald W. Haupt, Thomas A. Siewert
The purpose of this document is to report findings from the research peer reviews held March 27-29, 2007 for PHMSA's Pipeline Safety Research and Development Program. The findings and recommendations in this report derive from the scoring and comments

Origin of Adhesion in Humid Air

April 18, 2008
Author(s)
Doo-In Kim, Jaroslaw Grobelny, Pradeep N. Namboodiri, Robert F. Cook
The origin of adhesion at nanoscale contacts in humid air is investigated by pull-off force measurements using atomic force microscopes in controlled environments from ultra-high vacuum through various humidity conditions to water. An equivalent work of
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