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Displaying 38801 - 38825 of 73460

Nano-Lithography in Ultra-High Vacuum (UHV) for Real World Applications

March 11, 2004
Author(s)
James D. Gilsinn, Hui Zhou, Bradley N. Damazo, Joseph Fu, Richard M. Silver
As nano-lithography technology improves, more companies and research groups have the capability to create nano-scale structures. Scanning tunneling microscopes (STMs) are commonly used to create these structures and evaluate them afterward. One difficulty

Robust infrared filters for x-ray spectroscopy

March 11, 2004
Author(s)
Nathan A. Tomlin, Joel Ullom, James A. Beall, Gene C. Hilton, Steven Deiker, W.Bertrand (Randy) Doriese, Kent D. Irwin, Carl D. Reintsema, Leila R. Vale, Yizi Xu
One challenge to using cryogenic detectors for x-ray spectroscopy on a scanning electron microscope is the implementation of infrared blocking filters. In order to achieve high x-ray transmission, these filters can be as thin as 250 nm and consequently are

Structural, Electronic and Optical Properties of B-(Fe 1-x Co 2 )Si 2

March 11, 2004
Author(s)
D B. Migas, Leo Miglio, M Rebien, W Henrion, P Stauss, Anthony G. Birdwell, Albert Davydov, V L. Shaposhnikov, V E. Borisenko
Optimized crystal structure, electronic bands and density of states nearby the band gap, and the dielectric function of -(Fe1-xCox)Si2 with x equal to 0.0625 and 0.125 were obtained by means of total energy ultrasoft pseudopotential and full-potential

A Cross-Correlation Based Method for Spatial-Temporal Traffic Analysis

March 10, 2004
Author(s)
Kevin L. Mills, J Yuan
Analyzing spatial-temporal characteristics of traffic in large-scale networks requires both suitable analysis method and a means to reduce the amount of data that must be collected. Of particular interest would be techniques that reduce the amount of data

Minimal Universal Two-Qubit Controlled-NOT-Based Circuits

March 10, 2004
Author(s)
V V. Shende, I L. Markov, Stephen Bullock
We show how to implement an arbitrary two-qubit unitary operation in several universal gate libraries using the smallest possible number of gates. To this end, we prove that n-qubit circuits using CNOT and one-qubit gates require at least [1/4 (4n - 3n -1)

PWB Warpage Analysis and Verification using an AP210 Standards-based Engineering Framework and Shadow Moire

March 10, 2004
Author(s)
Dirk Zwemer, Manas Bajaj, Russell Peak, Thomas Thurman, Kevin G. Brady, S McCarron, A Spradling, Mike Dickerson, Lothar Klein, Giedrius Liutkus, John V. Messina
Thermally induced warpage of printed wiring boards (PWB) and printed circuit assemblies (PCA) is an increasingly important issue in managing the manufacturing yield and reliability of electronic devices. In this paper, we introduce complementary simulation

Temperature Measurements of Semiconductor Devices-A Review

March 10, 2004
Author(s)
David L. Blackburn
There are numerous methods for measuring the temperature of an operating semiconductor device. The methods can be broadly placed into three generic categories; electrical, optical, and physically contacting. The fundamentals underlying each of the

Atmospheric Pressure Microplasmas for Modifying Sealed Microfluidic Devices

March 8, 2004
Author(s)
J K. Evju, P B. Howell, Laurie E. Locascio, Michael J. Tarlov, J J. Hickman
A new DC microdischarge technique for chemical modification of microchannel walls is reported. Our results show that strongly hydrophilic or hydrophobic properties are quickly imparted unto the walls of assembled polymer microchannels in atmospheric

Feature-Based Inspection and Control System

March 8, 2004
Author(s)
Thomas Kramer, John A. Horst, Hui-Min Huang, Elena R. Messina, Frederick M. Proctor, Harry A. Scott
This report describes an architecture and software system for automatically performing process planning and control code generation for cutting and inspecting prismatic piece parts. This "Feature-Based Inspection and Control System" (FBICS) consists of

Tech Note 1458|NIST Measurement Service for DC Standard Resistors

March 8, 2004
Author(s)
Randolph Elmquist, Dean G. Jarrett, George R. Jones Jr., Marlin E. Kraft, Scott H. Shields, Ronald F. Dziuba
At the National Institute of Standards and Technology (NIST), the U.S. representation of the ohm is based on the quantum Hall effect, and it is maintained and disseminated at various resistance levels by working reference groups of standards. This document

The Effect of Movement During Cure of a Silicone Sealant

March 8, 2004
Author(s)
Christopher C. White, Donald L. Hunston
Movement of the building joint sealant during cure is thought to affect the fully cured mechanical properties. To examine this potential effect, a one-part silicone sealant was cured from 10 h to 168 h after sample creation before the onset of movement

Correlation for the Second Virial Coefficient of Water

March 4, 2004
Author(s)
Allan H. Harvey, Eric W. Lemmon
A new correlation has been developed to represent the second virial coefficient of water (H2O) as a function of temperature. The formulation was fitted to experimental data, both for the second virial coefficient itself and for a quantity related to its

Crystal Structure of the Complex Between Thrombin and the Central "E" Region of Fibrin

March 2, 2004
Author(s)
I Pechik, J Madrazo, M W. Mosesson, I Hernandez, G L. Gilliland, L Medved
Non-substrate interactions of thrombin with fibrin play an important role in modulating its procoagulant activity. To establish the structural basis for these interactions, we crystallized PPACK-inhibited thrombin in complex with a fragment, Eht

A Framework for Metrics in Large Complex Systems

March 1, 2004
Author(s)
G A. Mack, K Lonergan, Jean C. Scholtz, Michelle P. Steves, C R. Hale
The Terrorism Information Awareness (TIA) was initiated by the Information Awareness Office (IAO) of the Defense Advanced Research Projects Agency (DARPA). TIA capabilities enable the detection, classification, identification, and tracking of terrorist

A Numerical Investigation of Aerosol Dynamics in a Wall-Less Reactor

March 1, 2004
Author(s)
D M. Kremer, R W. Davis, Elizabeth F. Moore, S H. Ehrman
This paper describes a numerical investigation of aerosol formation during silane decomposition in a wall-less reactor. The wall-less reactor is amenable to numerical investigation because the homogeneous chemical reactions leading to the formation of

Acoustic Loss in Langasite and Langanite

March 1, 2004
Author(s)
Ward L. Johnson, K Sudook, U Satoshi
Resonant ultrasonic loss 1/Q in plano-convex unplated Y-cut disks of langasite and langanite were measured as a function of freqeuncy and temperature with the aim of identifying dominant internal mechanisms that will degrade electronic oscillator

An Open Source Informatics System for Combinatorial Materials Research

March 1, 2004
Author(s)
Weiping Zhang, Michael J. Fasolka, Alamgir Karim, Eric J. Amis
Laboratory Research Informatics Systems (LRIS) hold great promise in streamlining research generally, and are particularly necessary for new data-intensive research strategies such as combinatorial and high-throughput approaches. In this talk, we describe

Asymmetric Energy Distribution of Interface Traps in n- & p- MOSFETs with HfO2 Gate Dielectric on Ultra-thin SiON Buffer Layer

March 1, 2004
Author(s)
Jin-Ping Han, Eric M. Vogel, Evgeni Gusev, C. D'Emic, Curt A. Richter, Da-Wei Heh, John S. Suehle
The variable rise/fall-time charge pumping technique has been used to determine the energy distribution of interface trap density (Dit) in MOSFETs with HfO2 gate dielectric grown on ultra-thin (1-2 monolayer) SiON buffer layer on Si. Our results have
Displaying 38801 - 38825 of 73460
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