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Displaying 38926 - 38950 of 73461

X-Ray Topography

February 4, 2004
Author(s)
David R. Black, Gabrielle G. Long
The study of the interrelationships between processing, structure and properties of materials is fundamental to the field of materials science and engineering. The need to understand the microstructure of materials has driven the development of a wide

Abraham's Force on a Highly Dispersive Medium

February 2, 2004
Author(s)
Paul D. Lett, L Wang
We consider the radiation force on highly dispersive media. In doing so we reconsider an experiment proposed to measure the Abraham force term in the stress-energy tensor at optical frequencies by measuring the displacement of a transparent dielectric

A New Optical Tweezers Technique Using a Holographic Crystal

February 1, 2004
Author(s)
E Edgu-Fry, Kristian Helmerson, Joseph E. Reiner, Rani B. Kishore
It has been shown previously that radiation pressure from a highly focused beam can be used to trap and manipulate objects in an aqueous media [1]. Over the past decade there have been several studies done by various groups to increase the ability of

Absolute Surface Coverage Measurement Using a Vibrational Overtone

February 1, 2004
Author(s)
A C. Pipino, J P. Hoefnagels, N Watanabe
Sub-monolayer absolute surface number densities are obtained by cavity ring-down spectroscopy (CRDS) for three haloethylenes with differing molecular symmetries on silica using the first C-H stretching overtones. Gas-phase CRDS measurements provide

Advanced Engineering Environments for Small Manufacturing Enterprises: Volume II

February 1, 2004
Author(s)
Steven J. Fenves, Ram D. Sriram, Young Choi, J P. Elm, J E. Robert
To assist the Small Manufacturing Enterprise (SME) in adopting Advanced Engineering Environments (AEEs), this report provides two self-assessment tools; the Self Assessment Tool for Engineering Environments (SAT-EE) to assist an SME in assessing the

Bayesian Inference of Nanoparticle-Broadened X-Ray Line Profiles

February 1, 2004
Author(s)
N G. Armstrong, W Kalceff, James Cline, John E. Bonevich
A single and self-contained method for determining the crystallite-size distribution and shape from experimental line profile data is presented. We have shown that the crystallite-size distribution can be determined without assuming a functional form for

Bias conditions of dc-SQUIDs for a time-domain SQUID multiplexer

February 1, 2004
Author(s)
Joern Beyer, Dietmar Drunge, Kent D. Irwin
SQUID multiplexers can be used to read out arrays of cryogenic microcalorimeters and bolometers. Time-domain dc-SQUID multiplexer configurations use an individual first-stage dc-SQUID for each detector of an array. The biasing conditions of these first

Centrifugal Buoyancy Effects on the Linear Stability of Sprial Poiseuille Flow

February 1, 2004
Author(s)
David Cotrell, Geoffrey B. McFadden
For fluid flow in an annulus driven by the combination of an axial pressure gradient, rotation of the inner and outer cylinders, and a radial temperature gradient (spiral Poiseuille flow with a radial temperature gradient), we are investigating the

Chemical Science and Technology Laboratory: Annual Report FY2003

February 1, 2004
Author(s)
W Koch, Eric B. Steel, Ellyn S. Beary
This report summarizes the research and services provided by the Chemical Science and Technology Laboratory of the National Institute of Standards and Technology for Fiscal Year 2003. The report includes: a general overview of the laboratory's activities

Chiral Separations by Temperature Gradient Focusing

February 1, 2004
Author(s)
K M. Balss, Wyatt N. Vreeland, Karen W. Phinney, Michael J. Tarlov, David J. Ross
Temperature gradient focusing (TGF) involves application of a temperature gradient across a microchannel or capillary. With an appropriate buffer, the temperature gradient creates a gradient in both the electric field and the electrophoretic velocity
Displaying 38926 - 38950 of 73461
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