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Displaying 39526 - 39550 of 74107

Three-Body Wear of Dental Resin Composites Reinforced With Silica-Fused Whiskers

March 1, 2004
Author(s)
Hockin D. Xu, Janet Quinn, Anthony A. Giuseppetti, F Eichmiller, Edward E. Parry, Gary E. Schumacher
Objective: Recent studies used silica-fused whiskers to increase the strength and toughness of resin composites. This study investigated the three-body wear of whisker composites. It was hypothesized that the whisker composites would be more wear resistant

Valence Electron Orbitals of an Oligo(p-phenylene-ethynylene)thiol on Gold

March 1, 2004
Author(s)
Christopher D. Zangmeister, Steven W. Robey, Roger D. van Zee, Yuxing Yao, J M. Tour
One- and two-photon photoemission spectra have been measured for monolayers of oligo(para-phenylene-ethynylene) thiolate chemisorbed on gold surfaces. Within 5 eV of the Fermi level, four states are observed, two occupied (2.0 eV and 4.0 eV below the Fermi

X-ray Microcalorimeter Arrays Fabricated by Surface Micromachining

March 1, 2004
Author(s)
Gene C. Hilton, James A. Beall, Steven Deiker, Leila R. Vale, W.Bertrand (Randy) Doriese, Joern Beyer, Joel Ullom, Carl D. Reintsema, Yizi Xu, Kent D. Irwin
We are developing arrays of Mo/Cu TES-based detectors for use as as x-ray microcalorimeters and sub-mm bolometers. We have fabricated 8 x 8 pixel x-ray microcalorimeter arrays pixel using surface micromachining techniques. This surface-micromachining

EBSD Measurement of Strains in GaAs due to Oxidation of Buried AlGaAs Layers

February 27, 2004
Author(s)
T Keller, Alexana Roshko, R.H. Geiss, Kristine A. Bertness, T.P. Quinn
We have characterized elastic strain fields associated with the wet-thermal oxidation of buried Al xGa 1-xAs (x 0.98) layers of thickness 80 nm, situated between GaAs layers of thickness 200 nm, on a GaAs substrate. The compressive strains accompanying

Superconformal Deposition and the CEAC Mechanism

February 27, 2004
Author(s)
Thomas P. Moffat, Daniel Wheeler, Daniel Josell
The mechanism and modeling of superconformal film growth used in the electrochemical fabrication of 3-D Cu interconnects is briefly reviewed. The central role of electrolyte additives in controlling feature filling is fully described by the curvature

Dynamics of Proton Transfer in Bacteriorhodopsin

February 25, 2004
Author(s)
Y. S. Lee, Morris Krauss
Proton transfer from the cyctoplasm to the extracellular side is initiated from protonated asp96 in the cytoplasmic region towards the deprotonated Schiff base. This occurs in the transition from the late M photocycle state to the N state. A quantum

Micellar Affinity Gradient Focusing

February 25, 2004
Author(s)
K M. Balss, P B. Howell, David J. Ross
This report describes a novel method for the concentration and separation of neutral and/or hydrophobic analytes based on a combination of the analytes partitioning into a micellar phase and their electrophoretic mobility. This method of simultaneous

Semiconductor Factory and Equipment Time Synchronization

February 25, 2004
Author(s)
Ya-Shian Li-Baboud, Brad Van Eck
With the advent of e-manufacturing including automated process control (APC), such as fault detection classification (FDC), more stringent accuracy requirements for time stamps are required to perform analysis intended for process and business critical

Current quantization due to single-electron transfer in Si-wire charge-coupled devices

February 23, 2004
Author(s)
Akira Fujiwara, Neil M. Zimmerman, Yukinori Ono, Yasuo Takahashi
We observe a quantized current due to single-electron transfer in a small charge-coupled device, which consists of a narrow Si-wire channel with fine gates; the gate is used to form a tunable barrier potential. By modulating two barrier potentials under

Patterning Retinal Cells on Polyelectrolyte Multilayers

February 18, 2004
Author(s)
Darwin Reyes-Hernandez, Elizabeth M. Perruccio, Patricia Becerra, Laurie E. Locascio, Michael Gaitan
The patterning of retinal epithelial cells on polyelectrolyte multilayer (PEMs) lines is presented. PEMs were deposited in discrete lines using a poly(dimethylsiloxane) (PDMS) microfluidic network on top of a flat PDMS slab. The layers were formed by

Segmentation for Robust Tracking in the Presence of Severe Occlusion

February 18, 2004
Author(s)
Camillo A. Gentile, M Sznaier, O Camps
Tracking an object in a sequence of images can fail due to partial occlusion or clutter. Robustness to occlusion can be increased by tracking the object as a set of parts such that not all of these are occluded at the same time. However, successful
Displaying 39526 - 39550 of 74107
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