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Author: daniel hussey

Displaying records 11 to 20 of 36 records.
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11. Electrically‹stimulated gradients in water and counterion concentrations within electroactive polymer actuators
Published: 2/1/2010
Authors: Jong Keun Park, Paul J. Jones, Chris Sahagun, Kirt Anthony Page, Daniel S Hussey, David L Jacobson, Sarah E Morgan, Robert B Moore
Abstract: While ionic polymer metal composites (IPMCs) have been studied for more than 10 years, the specific actuation mechanism is still unclear. In this work, neutron imaging, applied potential (AP) and current sensing (CS) atomic force microscopy (AFM) me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903856

12. Observations of Transient Flooding in a Proton Exchange Membrane Fuel Cell Using Time-Resolved Neutron Radiography
Published: 11/10/2009
Authors: Michael A Hickner, Nathan P. Siegel, Ken S Chen, Daniel S Hussey, David L Jacobson
Abstract: The generation and transport of water in both the liquid and gas phases during device operation is an important area of study to understand both steady-state and transient performance of proton exchange membrane fuel cells. Specifically, localized h ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902849

13. Erratum: Precision Measurement of the n-He3 Incoherent Scattering Length Using Neutron Interferometry [Phys. Rev. Lett. 102, 200401 (2009)]
Published: 10/23/2009
Authors: Michael G Huber, Muhammad Arif, T C Black, W.C. Chen, Thomas R Gentile, Daniel S Hussey, Dmitry Pushin, Fred E. Wietfeldt
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904148

14. Use of Neutron Imaging for PEMFC Performance Analysis and Design
Published: 3/1/2009
Authors: T Trabold, Jon P Owejan, Jeffrey J Gagliardo, David L Jacobson, Daniel S Hussey, Muhammad Arif
Abstract: Efficient water management is one of the key design objectives for proton exchange membrane fuel cells (PEMFCs), due to the influence of water on material selection, hardware configuration, and stack operating conditions. Neutron imaging has proven t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842449

15. Statistical Learning Methods for Neutron Transmission Tomography of Fuel Cells
Published: 7/8/2008
Authors: Kevin J Coakley, Dominic F. (Dominic F.) Vecchia, Daniel S Hussey
Abstract: In a fuel cell, water is formed as a by-product of the reaction between hydrogen and oxygen. As a neutron beam passes through a fuel cell, it can undergo s-wave scattering. For the dry and wet states of a fuel cell, there are spatially varying neutro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150466

16. Neutron Imaging Investigation of Liquid Water Distribution in and the Performance of a PEM Fuel Cell
Published: 7/1/2008
Authors: J Park, X Li, D Tran, T Abdel-Baset, Daniel S Hussey, David L Jacobson, Muhammad Arif
Abstract: In this study neutron radiography is applied to investigate the performance of a PEM fuel cell based on the effect of liquid water accumulation in the cell. Dynamic performance tests have been carried out on a PEM fuel cell with a specially designed ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841203

17. Neutron Collimation with Microchannel Plates: Calibration of Existing Technology and Near Future Possibilities
Published: 11/1/2007
Authors: Robert G Downing, Daniel S Hussey, A S Tremsin, David F r Mildner, W B Feller, David L Jacobson, Muhammad Arif, O H Siegmund
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904280

18. Feasibility of Single-View Coded Source Neutron Transmission Tomography
Published: 9/27/2007
Authors: K J Coakley, Daniel S Hussey
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100189

19. In-Situ Investigation of Water Transport in an Operating PEM Fuel Cell Using Neutron Radiography: Part 2 - Transient Water Accumulation in an Interdigitated Cathode Flow Field
Published: 7/27/2007
Authors: Jon P Owejan, T Trabold, David L Jacobson, D Baker, Daniel S Hussey, Muhammad Arif
Abstract: An interdigitated cathode flow field was tested in-situ with neutron radiography to measure the water transport through the porous gas diffusion layer in a PEM fuel cell. Constant current density to open circuit cycles were tested and the resulting ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841167

20. Neutron Images of the Through-Plane Water Distribution of an Operating PEM Fuel Cell
Published: 7/27/2007
Authors: Daniel S Hussey, David L Jacobson, Muhammad Arif, Jon P Owejan, Jeffrey J Gagliardo, T Trabold
Abstract: Neutron imaging has proven an invaluable tool for water metrology in operating proton exchange membrane fuel cells. Due to limitations in scintillator-based detector resolution, neutron imaging has been applied only to assessing the in-plane water di ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841205



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