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Displaying 39351 - 39375 of 73830

High-Throughput Adhesion Testing of Combinatorial Libraries With Multi-Lens Arrays

February 1, 2004
Author(s)
Aaron M. Forster, Wenhua Zhang, Christopher Stafford
The NIST Combinatorial Methods Center (NCMC) has adapted the Johnson, Kendall, and Roberts (JKR) test to develop a high-throughput adhesion measurement platform. Traditionally, the JKR test utilizes a single hemispherical lens compressed against (loading)

Hydrosomes and Optical Tweezers: What Can We Do With the World s Smallest Test Tubes?

February 1, 2004
Author(s)
Joseph E. Reiner, Rani B. Kishore, Kristian Helmerson, M K. Gilson
Hydrosomes are micron sized surfactant stabilized water droplets in a fluorocarbon background. Different chemicals can be mixed with the water droplets to form subpicoliter-sized containers. When two hydrosomes come into contact with each other they

Information Depth for Elastic-Peak Electron Spectroscopy

February 1, 2004
Author(s)
Aleksander Jablonski, Cedric J. Powell
We present a formalism for calculating the information depth (ID) for elastic-peak electron spectroscopy (EPES) in which a measurement is made of the intensity of elastically-backscattered electrons for an amorphous or polycrystalline material and a

Intuitive Diffraction Model for Multistaged Optical Systems

February 1, 2004
Author(s)
Eric L. Shirley
A simplified framework is motivated, in which many diffraction effects can be treated, especially in multi-staged optical systems. These include effects of limiting apertures, although this work may be especially suitable when considering diffraction

Investigations of Electrospray Sample Deposition for Polymer MALDI Mass Spectrometry

February 1, 2004
Author(s)
S D. Hanton, I Z. Hyder, J R. Stets, K G. Owens, William R. Blair, Charles M. Guttman, Anthony A. Giuseppetti
In the interest of more thoroughly understanding the relationship between sample preparation technique and spectra quality produced in Matrix-Assisted Laser Desorption/Ionization (MALDI) mass spectrometry, we have investigated details of the Electrospray

Matrix Decompositions and Entanglement Dynamics

February 1, 2004
Author(s)
Stephen Bullock, G K. Brennen
Given a closed system of quantum data, quantum computations are mathematically modeled by exponentially large unitary matrices. A matrix decomposition is an algorithm for factoring matrices, and in this context such an algorithm splits a quantum

Modeling, Simulation and Prediction of Rockwell Hardness Indentation

February 1, 2004
Author(s)
Li Ma, Samuel R. Low III, Richard J. Fields, Roland deWit, Jun-Feng Song, Theodore V. Vorburger, J Zhou
Rockwell hardness test, as a measure of the resistance of a material to localized plastic deformation, is a valuable and widely used mechanical test. However, the accuracy of Rockwell hardness measurement is still in question. The indenter, including both

Molecular Dynamics Study of the Surface Tension of a Binary Immiscible Fluid

February 1, 2004
Author(s)
V Simmons, Joseph B. Hubbard
The planar interface between two liquids having two degrees of affinity to mix has been studied by molecular dynamics simulations. The surface tension is calculated from the normal, P N, and transverse, P T, components of the pressure tensor P for a wide

Near-Threshold Photoassociation of 87 Rb 2

February 1, 2004
Author(s)
M Kemmann, R Mistrik, S Nussmann, H Helm, Carl J. Williams, Paul S. Julienne
Photoassociation of cold 87Rb (5s, fb+2) atom pairs is studied within 15 GHz of the dissociation limits 87Rb(5p3/2, fa) + 87Rb(5s, fb =2). Vibrational levels in the long range, hyperfine-manifolds of the 0? and 1g states arising from the 87Rb(5p3/2)-fine

NIST CFTT: Testing Computer Forensics Tools

February 1, 2004
Author(s)
James R. Lyle
There is a critical need in the law enforcement community to ensure the reliability of computer forensic tools. A capability is required to ensure that forensic software tools consistently produce accurate and objective results. The goal of the Computer

Non-Linear Transport Properties of Carbon Nanotube Filled Polypropylene

February 1, 2004
Author(s)
S B. Kharchenko, Kalman D. Migler, Jack F. Douglas, Jan Obrzut, E A. Grulke
Dispersal of a relatively small concentration [O(1%) volume fraction] of multiwall carbon nanotubes (MWNT) into polypropylene (PP) is found to cause large and complex changes in nanocomposite transport properties. Specifically, both the shear viscosity h(g

Ontology of the Process Specification Language

February 1, 2004
Author(s)
Michael Gruninger
Representing activities and the constraints on their occurrences is an integral aspect of commonsense reasoning, particularly in manufacturing, enterprise modelling, and autonomous agents or robots. In addition to the traditional concerns of knowledge
Displaying 39351 - 39375 of 73830
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