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Displaying 29701 - 29725 of 74137

Quantification of Hydroxyl Content in Ceramic Oxides: A PGAA Study of BaTiO3

September 1, 2008
Author(s)
Rick L. Paul, Vahit Atakan, Chun-Wei Chen, Richard E. Riman
Thermo-gravimetric analysis (TGA) and Fourier Transform Infrared Spectroscopy (FTIR) techniques for water content determination were compared with a neutron characterization technique, Prompt Gamma Activation Analysis (PGAA). Residual H content of the

Refining the In-Parameter-Order Strategy for Constructing Covering Arrrays

September 1, 2008
Author(s)
Michael Forbes, James F. Lawrence, Yu Lei, Raghu N. Kacker, D. Richard Kuhn
Covering arrays are structures for well-representing extremely large input spaces and are used to efficiently implement blackbox testing for software and hardware. This paper proposes refinements over the In-Parameter-Order strategy (for arbitrary $t$)

Status of NIST Thermal Insulation Reference Materials

September 1, 2008
Author(s)
Robert R. Zarr
The current status of thermal insulation reference materials at the National Institute of Standards and Technology (NIST) is presented. This paper describes an ongoing thermal insulation measurement program that provides the public with Calibrated Transfer

Through-focus Scanning and Scatterfield Optical Methods for Advanced Overlay Target Analysis

September 1, 2008
Author(s)
Ravikiran Attota, Michael T. Stocker, Richard M. Silver, Nathanael A. Heckert, Hui Zhou, Richard J. Kasica, Lei Chen, Ronald G. Dixson, Ndubuisi G. Orji, Bryan M. Barnes, Peter Lipscomb
In this paper we present overlay measurement techniques that use small overlay targets for advanced semiconductor applications. We employ two different optical methods to measure overlay using modified conventional optical microscope platforms. They are

Calibration of a Force Feedback Joystick

August 29, 2008
Author(s)
J H. Daruwalla, Nicholas Dagalakis
The objective of this project was to calibrate a commercially available force feedback joystick that could be used for the control of a laser beam optical tweezers test-bed. A calibration box was built to hold the joystick and the load-cell. The joystick

Delocalized Correlations in Twin Light Beams with Orbital Angular Momentum

August 29, 2008
Author(s)
Alberto M. Marino, Vincent Boyer, Raphael C. Pooser, Paul D. Lett, Kristin Lemons, Kevin Jones
We generate intensity-difference-squeezed Laguerre-Gauss twin beams carrying orbital angular momentum using 4-wave mixing (4WM) in a hot atomic vapor. The conservation of orbital angular momentum in the 4WM process is studied as well as the spatial

On the shortest linear straight-line program for computing linear forms

August 29, 2008
Author(s)
Joan Boyar, Philip Matthews, Rene Peralta
We study the complexity of the Shortest Linear Program (SLP) problem, which is to the number of linear operations necessary to compute a set of linear forms. SLP is shown to be NP-hard. Furthermore, a special case of the corresponding decision problem is

Trapped-Ion Quantum Logic Gates Based on Oscillating Magnetic Fields

August 29, 2008
Author(s)
Christian Ospelkaus, Christopher Langer, Jason Amini, Kenton R. Brown, Dietrich G. Leibfried, David J. Wineland
Oscillating magnetic fields and field gradients can be used to implement single-qubit rotations and entangling multi-qubit quantum gates for trapped-ion quantum information processing (QIP). With fields generated by currents in microfabricated surface

VAST 2008 Challenge: Introducing Mini-Challenges

August 29, 2008
Author(s)
Georges Grinstein, Catherine Plaisant, Sharon J. Laskowski, Theresa O'Connell, Jean Scholtz, Mark Whiting
Visual analytics experts realize that one effective way to push the field forward and to develop metrics for measuring the performance of various visual analytics components is to hold an annual competition. In its third year, we restructured the contest

Classification of Microheterogeneity in Solid Samples using mXRF

August 28, 2008
Author(s)
John L. Molloy, John R. Sieber
Micro X-ray Fluorescence (µXRF) has been used to nondestructively investigate elemental heterogeneity by constructing two-dimensional maps of elemental concentrations in reference materials. µXRF allows probing of sample sizes in the microgram and nanogram

The Integration of Molecular Electronic Devices with Traditional CMOS Technologies

August 28, 2008
Author(s)
Nadine E. Gergel-Hackett, Askia A. Hill, Christina A. Hacker, Curt A. Richter
This work describes the development of hybrid circuits composed of silicon-based molecular electronic devices and traditional CMOS technology. In the development of these circuits, we first fabricated individual CMOS-compatible molecular electronic devices

Band offsets of atomic-layer-deposited Al2O3 on GaAs and the effects of surface treatment.

August 27, 2008
Author(s)
Nhan V. Nguyen, Oleg A. Kirillov, Weirong Jiang, Wenyong Wang, John S. Suehle, P. D. Ye, Y. Xuan, N. Goel, Kwang-Woo Choi, Wilman Tsai
In this letter we report the band offsets of the Al/Al2O3/GaAs structure determined by internal photoemission and spectroscopic ellipsometry. The energy barrier height at the Al2O3 and sulfur-passivated GaAs interface is found to be 3.0 eV, which is

Forensic Filtering of Cell Phone Protocols

August 27, 2008
Author(s)
Aurelien M. Delaitre, Wayne Jansen
Phone managers are non-forensic software tools designed to carry out a range of tasks for the user, such as reading and updating the contents of a phone, using one or more of the communications protocols supported by the phone. Phone managers are sometimes

Signature of magnetic phase separation in the ground state of Pr 1 - x Ca x MnO 3

August 27, 2008
Author(s)
Hao Sha, F Ye, Pengcheng Dai, J. A. Fernandez-Baca, D Mesa, Jeffrey Lynn, Y Tomioka, Y Tokura, Jiandi Zhang
Neutron scattering has been used to investigate the evolution of long- and short-range charge-ordered (CO), ferromagnetic, and antiferromagnetic (AF) correlations in single crystals of Pr1−xCaxMnO3. The existence and population of spin clusters as

Diagnosis of Pulsed Squeezing in Multiple Temporal Modes

August 26, 2008
Author(s)
Scott C. Glancy, Emanuel H. Knill, Thomas Gerrits, Tracy S. Clement, Martin J. Stevens, Sae Woo Nam, Richard P. Mirin
When one makes squeezed light by downconversion of a pulsed pump laser, many temporal / spectral modes are simultaneously squeezed by different amounts. There is no guarantee that any of these modes matches the pump or the local oscillator used to measure
Displaying 29701 - 29725 of 74137