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Author: andrew allen

Displaying records 21 to 30 of 73 records.
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21. Annealing Behavior of Atomic Layer Deposited HfO2 Films Studied by Synchrotron X-Ray Reflectivity and Grazing Incidence Small Angle Scattering
Published: 6/30/2009
Authors: Martin L Green, Andrew John Allen, J. L. Jordan-Sweet, Jan Ilavsky
Abstract: New results are presented for the annealing behavior of ultrathin complementary-metal-gate-semiconductor (CMOS) gate-dielectric (high-) HfO2 films grown by atomic layer deposition (ALD). A series of ALD HfO2 dielectric films has been stu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854475

22. Ultra-small-angle X-ray scattering at the Advanced Photon Source
Published: 6/12/2009
Authors: Pete R. Jemian, Jan Ilavsky, Andrew John Allen, Fan Zhang, Lyle E Levine, Gabrielle G. Long
Abstract: The design and operation of a versatile ultra-small-angle X-ray scattering (USAXS) instrument at the Advanced Photon Source (APS) at Argonne National Laboratory are presented. The instrument is optimized for the high brilliance and low emittance of a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854464

23. Multi-Scale Microstructure Characterization of Solid Oxide Fuel Cell Assemblies with Ultra Small-Angle X-Ray Scattering
Published: 6/11/2009
Authors: Andrew John Allen, Jan Ilavsky, Artur Braun
Abstract: The structure of three solid oxide fuel cell assemblies with 200 micrometers nominal thick-ness in the transverse plane, before and after operation, and with and without sulfur con-taining fuel, is quantified with ultra small angle x-ray scattering ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854440

24. Process-Controlled Plasma-Sprayed Yttria-Stabilized Zirconia Coatings: New Insights from
Published: 2/11/2009
Authors: Y Li, W Chi, S Sampath, A N Goland, H Herman, Andrew John Allen, J Ilavsky
Abstract: A multi-component microstructure model is applied in ultrasmall-angle X-ray scattering (USAXS) studies of the processing microstructure property relationships for two groups of plasma-sprayed yttria-stabilized zirconia (YSZ) thermal barrier coati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851077

25. Structural Changes to the Calcium Silicate Hydrate Gel Phase of Hydrated Cement with Age, Drying, and Resaturation
Published: 10/8/2008
Authors: J Thomas, Andrew John Allen, Hamlin M Jennings
Abstract: The effects of partial and complete drying on the internal structure of hydrated cement paste were investigated using small angle neutron scattering (SANS). Each specimen was analyzed in the initial saturated state, in the dried state, and then aga ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851119

26. In Situ Ultra-Small-Angle X-Ray Scattering Study of the Solution-Mediated Formation and Growth of Nanocrystalline Ceria
Published: 1/16/2008
Authors: Andrew John Allen, Vincent A Hackley, P R Jemian, Jan Ilavsky, J M Raitano, S W Chan
Abstract: A remote-controlled isothermal circulating fluid flow cell is described and results presented for the in situ ultra-small-angle x-ray scattering (USAXS) study of solution-mediated systems and suspensions. The fluid flow prevents settling out of coars ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850995

27. Composition and Density of Amorphous Calcium-Silicate-Hydrate in Cement
Published: 9/1/2007
Authors: Andrew John Allen, J Thomas, Hamlin M Jennings
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854232

28. Interphase Effects in Dental Nanocomposites Investigated by Small-Angle Neutron Scattering
Published: 9/1/2007
Authors: K S Wilson, Andrew John Allen, N. R. Washburn, Joseph M Antonucci
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854298

29. USAXS-Analysis of Electron-Beam Physical Vapour Deposited Thermal Barrier Coatings and Applications of Void Structure Modelling to Determine the Influence of Process Parameters on the Thermal Conductivity
Published: 9/1/2007
Authors: A Flores Renteria, B Saruhan, J Ilavsky, Andrew John Allen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854216

30. Versatility and Robustness of Guassian Random Fields for Modeling Random Media
Published: 6/1/2007
Authors: J A Quintanilla, J T Chen, R F Reidy, Andrew John Allen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854346



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