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Displaying 31301 - 31325 of 73829

Veneer Versus Core Failure in Adhesively Bonded All-Ceramic Crown Layers

February 14, 2008
Author(s)
James J. Lee, Jae-Young Kwon, Sanjit Bhowmick, Isabel K. Lloyd
Joining a brittle veneer to a strong ceramic core with an adhesive offers benefits over current fabrication methods for all-ceramic crowns. However, such joining introduces the possibility of subsurface radial cracking in the veneer as well as in the core

High Sensitivity FTIR-ATR Study of Ultra-Thin Zr02 Films: A Study of Phase Change

February 12, 2008
Author(s)
Safak Sayan, Deane Chandler-Horowitz, Nhan Van Nguyen, James R. Ehrstein, Mark Croft
Fourier Transform Infrared spectroscopy (FTIR) using the Attenuated Total Reflection (ATR) method was performed in the mid-IR spectral region on ultrathin ZrO2 films deposited on silicon wafers. A vibrational mode near 710 cm-1 was observed that undergoes

Lack of charge offset drift is a robust property of Si single electron transistors

February 12, 2008
Author(s)
Emmanouel S. Hourdakis, J A. Wahl, Neil M. Zimmerman
Single electron transistors (SETs) face several challenges before they can be considered technologically useful devices. One of them is the random, low frequency, charge offset drift that inhibits their use in parallel. Recently, tunable barrier Si SETs

A Quantum Network Manager That Supports A One-Time Pad Stream

February 11, 2008
Author(s)
Alan Mink, Lijun Ma, Anastase Nakassis, Haolang Xu, Oliver T. Slattery, Barry J. Hershman, Xiao Tang
We have begun to expand the NIST quantum key distribution (QKD) system into a quantum network to support secure cryptography. We are starting with a simple three-node network, one Alice switched between Bob1 and Bob2. To support such a quantum network, we

Fundamental Atomic-Scale Issues/Processes Pertinent to Dynamics at Surfaces

February 11, 2008
Author(s)
John William Gadzuk
An introduction to some basic concepts and building blocks that facilitate the understanding of atomic scale dynamics at surfaces is presented. The focus is mainly towards processes defined in terms of both nuclear and electronic involvement. Reduction of

Quantum key distribution at GHz transmission rates

February 11, 2008
Author(s)
Alessandro Restelli, Joshua C. Bienfang, Alan Mink, Charles W. Clark
Quantum key distribution (QKD) channels are typically realized by transmitting and detecting single photons, and therefore suffer from dramatic reductions in throughput due to both channel loss and noise. These shortcomings can be mitigated by applying

Information management for Environmental Concerns

February 8, 2008
Author(s)
Eric D. Simmon, John V. Messina, Kevin G. Brady
Around the world there is a growing awareness that the environmental impact from manufacturing needs to be minimized. Concerns about issues from toxic materials ending up in landfills to manufacturing process chelmicals causing health problems are causing

The Potentials of Helium Ion Microscopy for Semiconductor Process Metrology

February 6, 2008
Author(s)
Michael T. Postek, Andras Vladar
Semiconductor manufacturing is always looking for more effective ways to monitor and control the manufacturing process. Helium Ion Microscopy (HIM) presents a new approach to process monitoring which has several potential advantages over the traditional

Effects of Contact Geometry Upon Pull-Off Force Measurements With a Colloidal Probe

February 5, 2008
Author(s)
Seung Ho Yang, Huan Zhang, Michael Nosonovsky, Koo-Hyun Chung
This paper examines the effects of contact geometry on the pull-off (adhesion) force between a glass sphere (colloidal probe) and a silicon substrate in an environment with controlled relative humidity. An atomic force microscope (AFM) is used to measure

Mixing in Microfluidic Devices Using Oscillatory Channel Flow

February 5, 2008
Author(s)
Frederick R. Phelan Jr., N R. Hughes, Jai A. Pathak
Mixing in microfluidic devices driven by oscillatory channel flow is studied. Numerical simulation of the unsteady Navier-Stokes equations is used to investigate generation of flow controlled chaotic mixing, in which the channel geometries have stationary

Self-Assembled Monolayers of an Oligo(ethylene oxide) Disulfide and its Corresponding Thiol Assembled From Water: Characterization and Protein Resistance

February 5, 2008
Author(s)
David J. Vanderah, Marlon L. Walker, Mark A. Rocco, Kenneth A. Rubinson
The self-assembled monolayers (SAMs) of the ?-methyl oligo(ethylene oxide) disulfide [S(CH2CH2O)6CH3]2, [S(EO)6]2 {OEO disulfide}, on Au from 95 % ethanol and from water are described. Spectroscopic ellipsometry and reflection-absorption infrared

TRC Thermodynamic Tables, Non-Hydrocarbon Supplement NH98, 2007

February 4, 2008
Author(s)
Michael D. Frenkel
1. Table 23-2-1-(1.15010)-db - Page db-5842.0 New table for 2-propenyl methanoate containing the density for the real fluid at selected temperatures and pressures. 2. Table 23-2-1-(1.21164)-db - Pages db-6033.0 through db-6033.3 New table for diethyl ether

Pseudo-Fermionization of 1-D Bosons in Optical Lattices

February 2, 2008
Author(s)
G Pupillo, A M. Rey, Carl J. Williams, Charles W. Clark
We present a model that generalizes the Bose-Fermi mapping for strongly correlated 1D bosons in an optical lattice, to cases in which the average number of atoms per site is larger than one. This model gives an accurate account of equilibrium properties of

Assessment of a Medium-Scale Polyurethane Foam Flammability Test.

February 1, 2008
Author(s)
Thomas J. Ohlemiller, John R. Shields
Six polyurethane foams of widely varying flame retardant levels have been tested in two modes: as four, fabric-wrapped cushions in a chair mock-up based on California Technical Bulletin 133 and in a two foam slab Vee configuration that uses multiple
Displaying 31301 - 31325 of 73829
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