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NIST Authors in Bold

Displaying 46676 - 46700 of 143827

Neutron Imaging of Lithium Concentration in Battery Pouch Cells

March 23, 2011
Author(s)
Daniel S. Hussey, David L. Jacobson, Jason B. Siegel, C. D. Stefan, Xinfan Lin, David Gorsich
This paper shows how neutron radiography can be used for in situ quantification of the lithium concentration across battery electrodes, a critical physical system state. The change in lithium concentration between the charged and discharged states of the

Polarization-Entangled Photon Pairs From a Periodically Poled Cystalline Waveguide

March 23, 2011
Author(s)
Zachary H. Levine, Jingyun Fan, Jun Chen, Alan L. Migdall
A proposal is made for the generation of polarization-entangled photon pairs from a periodically poled crystal. The theory is formulated in terms of colinear propagation for application to waveguides. The key feature of the theory is the use of type 2

Time Through the Air

March 23, 2011
Author(s)
John P. Lowe
A brief history of the NIST WWVB low frequency (LF) radio station. This includes recent attempts at creating a sister station on the eastern side of the United States and future plans for upgrade of the existing station.

Dimensional Metrology of Bipolar Fuel Cell Plates Using Laser Spot Triangulation Probes

March 22, 2011
Author(s)
Balasubramanian Muralikrishnan, Wei Ren, Dennis S. Everett, Eric S. Stanfield, Theodore D. Doiron
As in any engineering component, manufacturing a bipolar fuel cell plate for a polymer electrolyte membrane (PEM) hydrogen fuel cell power stack to within its stated design tolerances is critical in achieving the intended function. In a bipolar fuel cell

Measurement of equilibrium elemental vapor pressures using x-ray induced fluorescence

March 22, 2011
Author(s)
John J. Curry, Albert Henins, E. G. Estupinan, W. P. Lapatovich, S. D. Shastri
X-ray induced fluorescence is demonstrated as a fast and accurate method for measuring elemental vapor pressures over a wide range of pressures. As such, it may offer a preferable alternative to existing methods such as those based on effusion

Thoughts on Higher Education and Scientific Research

March 22, 2011
Author(s)
Jeffrey M. Voas, George Hurlburt, Keith Miller, Phillip Laplante, Bret Michael
The notion of a "tipping point" isn't new, al though the concept has relevance in differing ways. Academia seems to be at a tipping point, whereby the steady state of disciplinary specialization is about to give way to an interdisciplinary, collaborative

Conduction and Loss Mechanisms in Flexible Oxide-Based Memristors

March 21, 2011
Author(s)
Joseph L. Tedesco, Nadine Gergel-Hackett, Laurie Stephey, Andrew A. Herzing, Madelaine H. Hernandez, Christina A. Hacker, Jan Obrzut, Lee J. Richter, Curt A. Richter
In order to study the conduction and loss mechanisms behind their operation, flexible sol-gel based memristors were fabricated with differing oxide film thicknesses and device sizes. XPS, TEM, EELS, and VASE measurements indicated the oxide was amorphous

Consumer Use of Dishwashers, Clothes Washers, and Dryers: Data Needs and Availability

March 21, 2011
Author(s)
Christopher Iglehart, Natascha S. Milesi-Ferretti, Michael Galler
NIST provides technical support to the DOE in developing test procedures for a variety of residential appliances. As part of this process, DOE seeks representative consumer use data to establish test procedures that are representative of real world use

Distinguishing Identical Twins by Face Recognition

March 21, 2011
Author(s)
P J. Phillips, Patrick J. Flynn, Kevin W. Bowyer, Richard W. Vorder Bruegge, Patrick J. Grother, George W. Quinn, Matthew Pruitt
The paper measures the ability of face recognition algorithms to distinguish between identical twin siblings. The experimental dataset consists of images taken of 126 pairs of identical twins (252 people) collected on the same day and 24 pairs of identical

DMSC Rallies at IMTS 2010, and frequently asked questions

March 21, 2011
Author(s)
William G. Rippey
The Dimensional Metrology Standards Consortium (DMSC) marketing roadshow converged on the International Manufacturing Technology Show (IMTS) 2010 in Chicago this past September. Buoyed by many supporters, the organization showed the importance of
Displaying 46676 - 46700 of 143827
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