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Displaying 21576 - 21600 of 73929

Simultaneous Spin-Charge Relaxation in Double Quantum Dots

May 8, 2013
Author(s)
Vanita Srinivasa, Katja C. Nowack, Mohammad Shafiei, Lieven M. Vandersypen, Jacob M. Taylor
We investigate phonon-induced spin and charge relaxation mediated by spin-orbit and hyper- fine interactions for a single electron confined within a double quantum dot. A simple toy model incorporating both direct decay to the ground state of the double

Structure and Stability of SnO2 Nanocrystals and Surface-Bound Water Species

May 8, 2013
Author(s)
Rick L. Paul, Hsiu-Wen Wang, David J. Wesolowski, Thomas E. Proffen, Lucus Vicek, Wei Wang, Lawrence F. Allard, Alexander I. Kolesnikov, Mikhail Feygenson, Lawrence M. Anovitz
The structure of SnO2 nanoparticles (avg. 5 nm diameter) with a few layers of water on the surface has been elucidated by atomic pair distribution function (PDF) methods using in situ neutron total scattering data and molecular dynamics (MD) simulations

The Computational Materials Science of Concrete: Past-Present-Future

May 8, 2013
Author(s)
Edward Garboczi
From its small beginnings back in the 1960s, computational materials science has come a long way. The field is currently getting even more exciting with ideas like integrated computational materials engineering [1] being seriously considered in the start

VISCOSITY AND DENSITY OF ALUMINUM OXIDE NANOLUBRICANT

May 8, 2013
Author(s)
Mark A. Kedzierski
This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester-based aluminum oxide (Al2O3) nanoparticle dispersion (nanolubricant) at atmospheric pressure over the temperature range 288 K to 318 K. Two Al2O3 particles

Controlling the Competition between Optically Induced Ultrafast Spin-Flip Scattering and Spin Transport in Magnetic Multilayers

May 7, 2013
Author(s)
Justin Shaw, Hans Nembach, Thomas J. Silva, Margaret M. Murnane, Henry C. Kapteyn, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Stefan Mathias, Patrik Grychtol, Chan La-O-Vorakiat, Dennis Rudolf, Roman Adam
The study of ultrafast dynamics in magnetic materials provides rich opportunities for greater fundamental understanding of correlated phenomena in solid-state matter, because many of the basic microscopic mechanisms involved are as-yet unclear and are

Current induced torques and interfacial spin-orbit coupling: semiclassical modeling

May 7, 2013
Author(s)
Paul M. Haney, Hyun-Woo Lee, Kyung Jin Lee, Aurelien Manchon, Mark D. Stiles
Currents passing through bilayer nanowires with a ferromagnetic layer and a non-magnetic layer with strong spin-orbit coupling, excite magnetic dynamics which cannot be explained with standard models. The dynamics appear to require two torques which can be

Development and Characterization of Continuous Feed Firebrand Generator

May 6, 2013
Author(s)
Samuel L. Manzello, Sayaka Suzuki
Evidence suggests that wind driven firebrand showers are a major cause of structural ignition in Wildland-Urban Interface (WUI) fires. While firebrands have been researched for over four decades, prior studies have focused mainly on how far firebrands fly

Firebrand Generation from a Full-Scale Structure

May 6, 2013
Author(s)
Samuel L. Manzello, Sayaka Suzuki, Yoshihiko Hayashi
Firebrands are a critical mechanism of fire spread in large outdoor fires, such as urban fires in Japan and WUI fires in Australia, Southern Europe, and the USA. Firebrands have been studied for some time however there are few studies on generation of

Firebrand Generation from Building Components with Cedar Siding

May 6, 2013
Author(s)
Samuel L. Manzello, Sayaka Suzuki, Yoshihiko Hayashi
Fires in the wildland-urban interface (WUI) have been a large problem not only in the USA, but all over the world. From a pragmatic point of view, the WUI fire problem can be seen as a structure ignition problem [1]. It is believed that the structures

The Forthcoming IEEE Standard 1696 on Test Methods for Characterizing Circuit Probes

May 6, 2013
Author(s)
Nicholas Paulter, John Jendzurski, Mike McTigue, Bill Hagerup, Thomas E. Linnenbrink
The Technical Committee 10 (TC10) of the IEEE Instrumentation and Measurement Society initiated a new standards activity in 2006 for the development of test methods to characterize the performance of circuit probes. This standard contains a set of

Viscosity Modifiers to Enhance Concrete Performance

May 6, 2013
Author(s)
Dale P. Bentz
The hazard rate function for concrete structures often is portrayed as a “bathtub”-shaped curve, with a finite ever-decreasing probability of early-age failures being followed by a life with a relative low, constant probability of failure that ultimately

Vulnerability of Decking Assemblies to Continuous Firebrand Shower

May 6, 2013
Author(s)
Samuel L. Manzello, Sayaka Suzuki
In WUI fires, decking assemblies have been observed to be an ignition vulnerability based on post-fire damage surveys. The Office of the State Fire Marshall (OFSM) in California adopted the test method known as State Fire Marshall (SFM) STANDARD 12-7A-4 [1

Structural design for fire conditions: reliability-based resistance criteria

May 4, 2013
Author(s)
Therese P. McAllister, Bruce Ellingwood
The new paradigm of performance-based fire engineering (PBFE), with its systematic approach to identifying building performance objectives, quantitative structural analysis to verify that these objectives have been achieved, and management of uncertainties
Displaying 21576 - 21600 of 73929
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