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Displaying 48826 - 48850 of 143780

Understanding the Hazards of Grouped Electrical Cables

August 8, 2010
Author(s)
Kevin B. McGrattan, Andrew J. Lock, Nathan D. Marsh, Marc R. Nyden, Jason Dreisbach, David Stroup
CHRISTIFIRE (Cable Heat Release, Ignition, and Spread in Tray Installations during FIRE) is a U.S. Nuclear Regulatory Commission Office of Research program to quantify the mass and energy released from burning electrical cables. This type of quantitative

A Measurement Infrastructure for Sustainable Manufacturing

August 6, 2010
Author(s)
Shaw C. Feng, Che B. Joung
Global resource degradation, climate change, and environmental pollution are worsening due to increasing globalized industrialization. The manufacturing industry has thus been put under pressure to cope with these problems while maintaining competiveness

Coherent spin manipulation in an exchange-only qubit

August 4, 2010
Author(s)
E. A. Laird, Jacob Taylor, David P. DiVincenzo, C. M. Marcus, M. P. Hanson, A. C. Gossard
Initialization, manipulation and measurement of a three-spin qubit are demonstrated using a few- electron triple quantum dot, where all operations can be driven by tuning the exchange interaction. Multiplexed reflectometry, applied to two nearby charge

Carbon nanotube applications to scanning probe microscopy for next generation semiconductor metrology

August 3, 2010
Author(s)
Victor H. Vartanian, Paul McClure, Vladimir Mancevski, Joseph Kopanski, Phillip D. Rack, Ilona Sitnitsky, Matthew D. Bresin, Vincent LaBella, Kathleen Dunn
This paper presents an evaluation of e-beam assisted deposition and welding of conductive carbon nanotube (c-CNT) tips for electrical scanning probe microscope measurements. Variations in CNT tip conductivity and contact resistance during fabrication were

Characterization of gold nanoparticles modified with single-stranded DNA using analytical ultracentrifugation and dynamic light scattering

August 3, 2010
Author(s)
James Falabella, Tae Joon Cho, Dean C. Ripple, Vincent A. Hackley, Michael J. Tarlov
We report the characterization of gold nanoparticles modified with thiol-terminated single stranded DNA using analytical ultracentrifugation and dynamic light scattering. Sedimentation coefficients of nominally 10 and 20 nm diameter gold nanoparticles

A Green Laser Pointer Hazard

August 2, 2010
Author(s)
Jemellie Galang, Alessandro Restelli, Edward W. Hagley, Charles W. Clark
An inexpensive green laser pointer was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that the problem derives from an unsafe design, and

Facile Chemical Synthesis of Nanocrystalline Thermoelectric Alloys Based on Bi-Sb-Te-Se

August 2, 2010
Author(s)
Anuja Datta, Jagannath Paul, Arik Kar, Amitava Patra, Z. L. Sun, Lidong Chen, Joshua B. Martin, George S. Nolas
High yield syntheses of size confined Bi2Te3, Sb2Te3 and their alloy nanoparticles and nanoflakes were carried out by a facile glycol mediated solvothermal process. Phase purity and good crystalline quality were achieved for all alloy compositions by this

Friction and Wear in Micro and Nanomachines

August 2, 2010
Author(s)
Maarten P. de Boer, Alex D. Corwin, Frank W. DelRio, W R. Ashurst
Friction and wear present both challenges and opportunities for micro- and nanosystems. In the sections that follow, we will describe theoretical underpinnings of multi-asperity friction, micromachined test structures to measure friction, and monolayer
Displaying 48826 - 48850 of 143780
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