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Displaying 31501 - 31525 of 74049

JKR Adhesion Testing Between Biologically Relevant Surfaces

February 17, 2008
Author(s)
Adam J. Nolte, Heqing Huang, Christopher Stafford
In this work we report recent observations obtained using an adhesion testing device that utilizes the contact mechanics theory of Johnson, Kendall, and Roberts (JKR). Our goal is to develop a system capable of measuring adhesive forces between

Single cantilever peel test for analysis of adhesion strength in nanotransfer printing

February 17, 2008
Author(s)
Deuk Y. Lee, Gottlieb Oehrlein, Daniel R. Hines, Jiong Liu, Jun Y. Chung, Christopher Stafford, Christopher Soles, Eric K. Lin
Nanotransfer printing (NTP) has attracted much attention as a method for fabricating nanoscale structures using materials that are not generally compatible with conventional lithographic techniques. For NTP of a polymer film to a polymer substrate, thermal

Large sensitive-area NbN nanowire superconducting single-photon detectors fabricated on single-crystal MgO substrates

February 15, 2008
Author(s)
Shigehito Miki, Mikio Fujiwara, Masahide Sasaki, Burm Baek, Aaron Miller, Robert Hadfield, Sae Woo Nam, Zhen Wang
We report on the performance of large area NbN nanowire superconducting single-photon detectors (SSPDs). 20 x 20 υm 2 area SSPDs with 80 and 100 nm linewidths and 50% fill factor were fabricated in 4-nm-thick NbN films grown on single-crystal MgO

Preparation of Nanoparticles by Continuous-Flow Microfluidics

February 15, 2008
Author(s)
Andreas Jahn, Joseph E. Reiner, Wyatt N. Vreeland, Don DeVoe, Laurie E. Locascio, Michael Gaitan
We review a variety of micro- and nanoparticle formulations produced with microfluidic methods. A diverse variety of approaches to generate micro-scale and nano-scale particles have been reported. Here we emphasize the use of microfluidics, specifically

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
Displaying 31501 - 31525 of 74049
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