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Displaying 351 - 375 of 2289

Hierarchical carbon nanotube-alumina oxide fiber reinforced composites and oxide hydration kinetics

February 25, 2018
Author(s)
Ajay Krishnamurthy, Andrew Liotta, Brian L. Wardle, Aaron Forster
… highly aligned forests of carbon nanotubes (CNT) from the oxide fiber surfaces. The alumina fibers are available in … in these hierarchical systems. In this work, alumina oxide fibers, non-treated and exposed to the CVD process, are … Hierarchical carbon nanotube-alumina oxide fiber reinforced composites and oxide hydration kinetics …

Effect of oxidation on surface-enhanced Raman scattering activity of silver nanoparticles: a quantitative correlation

June 6, 2011
Author(s)
Yun Han, Robert Lupitskyy, Tseng-Ming Chou, Christopher Stafford, Henry Du, Svetlana Sukhishvili
… The effect of silver oxidation on surface-enhanced Raman scattering (SERS) was … (45-50 nm in diameter) immobilized on glass substrate. Oxidation of Ag NPs was performed in controlled ozone environment under UV irradiation. The extent of oxidation was characterized by X-ray photoelectron …

Origin of enhanced water oxidation activity in an iridium single atom anchored on NiFe oxyhydroxide catalyst

August 31, 2021
Author(s)
Xueli Zheng, Jing Tang, Allesandro Gallo, Jose A. Garrido Torres, Xiaoyun Yu, Peter Ercius, Haiyan Mao, Emily Been, Constantine J. Athanitis, Sirine C. Fakra, Chengyu Song, Ryan Davis, Jeffrey A. Reimer, John Vinson, Michal Bajdich, Yi Cui
… sources is limited, at present, by the sluggish water oxidation reaction. Single-atom catalysts (SACs) with a … open new paradigms toward designing high-performance water oxidation catalysts. Here, using operando X-ray absorption … activity, we demonstrate that the origin of water oxidation activity of IrNiFe SACs is the presence of highly …

Estimate of Radiation Release from MIT Reactor with Un-finned LEU Core during Maximum Hypothetical Accident

May 1, 2017
Author(s)
Kaichao Sun, Lin-wen Hu, Thomas H. Newton, Erik Wilson, Arne Olson
… LWR power reactors in a compact core using highly enriched uranium (HEU) fuel. In the framework of non-proliferation … have started a program to convert HEU fuel to low enriched uranium (LEU) fuel. A new type of LEU fuel based on a high density allow of uranium and molybdenum (U-10MO) is expected to allow the …

Acceptor Doping of Barium Strontium Titanate and Magnesium Oxide Composites

January 1, 2000
Author(s)
J. Synowczynski, G. Dewing, Richard G. Geyer, John H. Grosvenor Jr
… properties of bulk barium strontium titanate and magnesium oxide ceramic composites are measured with cylindrical … and for various weight percentages of added magnesium oxide. … Acceptor Doping of Barium Strontium Titanate and Magnesium Oxide Composites …

Modeling early breakdown failures of gate oxide in SiC power MOSFETs

July 14, 2016
Author(s)
Zakariae Chbili, Asahiko Matsuda, Jaafar Chbili, Jason T. Ryan, Jason P. Campbell, Mhamed Lahbabi, D. E. Ioannou, Kin P. Cheung
… a new “lucky defect” model where bulk defects in the gate oxide, introduced during growth, are responsible for the … current via trap-assisted-tunneling (TAT) leads to early oxide breakdown. This argument is supported with oxide breakdown observations in SiC/SiO2 DMOSFETs, as well as …

Measurement of Gate-Oxide Film Thickness by X-ray Photoelectron Spectroscopy

September 1, 2003
Author(s)
Cedric J. Powell, Aleksander Jablonski
… an increasing extent for the characterization of new gate-oxide materials, particularly for the determination of film … We present calculations of EALs for four proposed gate-oxide materials: zirconium dioxide, hafnium dioxide, … the correction for elastic-scattering effects in each gate-oxide material. For common measurement conditions, this …

Evolution of electrochemical interfaces in solid oxide fuel cells (SOFC): a Ni and Zr resonant anomalous ultra-small-angle X-ray scattering studywith elemental and spatial resolution across the cell assembly

June 1, 2014
Author(s)
Andrew J. Allen, Jan Ilavsky, Pete R. Jemian, Artur Braun
… to electrical energy and lend energy converters like solid oxide fuel cells (SOFC) their functionality. Over extended … solid oxide fuel cells, anomalous small angle X-ray scattering, … Evolution of electrochemical interfaces in solid oxide fuel cells (SOFC): a Ni and Zr resonant anomalous …

Analysis of Leakage Currents and Impact on Off-State Power Consumption for CMOS Technology in the 100 nm Regime

July 1, 2000
Author(s)
W. K. Henson, N. Yong, S. Kubicek, Eric M. Vogel, J. J. Wortman, K. De Meyer, A. Naem
… Low power and memory applications may be limited to an oxide thickness of 1.8 nm to 2.0 nm in order to minimize the … work suggest that reliability will probably limit silicon oxide scaling for high performance applications whereas gate leakage will limit gate oxide scaling for low power and memory applications. …

An Experimental and Kinetic Modeling Study of N-dodecane Pyrolysis and Oxidation in a Flow Reactor

August 31, 2015
Author(s)
S. Banerjee, Rei Tangko, David Sheen, Hai Wang, Craig T. Bowman
… The current study investigates n-dodecane pyrolysis and oxidation kinetics in the intermediate temperature regime of … kinetic mechanisms. The results showed that the fuel oxidation proceeds through an early pyrolytic stage where the … fuel breaks down into smaller alkene fragments and a late oxidation stage where the fi nal alkene fragments oxidize to …

A Combinatorial Approach to TCO Synthesis and Characterization

October 12, 2021
Author(s)
J D. Perkins, Dennis W. Readey, J. L. Alleman, J A. del Cueto, King C. Li, T J. Coutts, R Stauber, C. H. Duncan, David P. Young, P A. Parilla, B Keyes, L M. Geduilas, Davor Balzar, Q Wang, D Ginley
We have developed the deposition, characterization and analysis tools necessary for a combinatorial approach to thin flim metal oxides, with a special focus on transparent conducting oxides (TCOs). We are presently depositing compositionally graded

Bromination of marine particulate organic matter through oxidative mechanisms

September 14, 2014
Author(s)
Bruce D. Ravel, Alessandra C. Leri, Kathleen Thornton, Lawrence M. Mayer
… of sedimentary Br7. Organobromine may serve as a marker of oxidative breakdown of marine organic detritus, with the … Bromination of marine particulate organic matter through oxidative mechanisms …

In Situ Neutron Reflectometry Study of a Tungsten Oxide/Li-Ion Battery Electrolyte Interface

January 18, 2023
Author(s)
Eric Rus, Joseph A. Dura
… In the present work the interface between a tungsten oxide electrode and an electrolyte solution consisting of … interface formation on a model transition metal oxide, an example of a conversion electrode, to characterize … of tungsten electrodes without intentionally grown surface oxide. The WO 3 electrode was produced by thermal oxidation …

Influence of mercury and selenium chemistries on the progression of cardiomyopathy in pygmy sperm whales, Kogia breviceps

October 1, 2012
Author(s)
Colleen E. Bryan Sallee, William C. Davis, Wayne E. McFee, Carola A. Neumann, Jennifer Schulte, Gregory D. Bossart, Steven J. Christopher
More than half of pygmy sperm whales (Kogia breviceps) that strand exhibit signs of cardiomyopathy (CMP). Many factors may contribute to the development of idiopathic CMP in K. breviceps, including genetics, infectious agents, contaminants, biotoxins, and
Displaying 351 - 375 of 2289
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