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You searched on: Author: andrew allen

Displaying records 31 to 40 of 74 records.
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31. 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

32. Interphase Effects in Dental Nanocomposites Investigated by Small-Angle Neutron Scattering
Published: 4/6/2007
Authors: K S Wilson, Andrew John Allen, N Washburn, Joseph M Antonucci
Abstract: Small angle neutron scattering (SANS) was used to assess nanoparticle dispersion morphologies and nanoscale interphase characteristics in polymer composites containing four concentrations of silica nanoparticle fillers (10 %, 25 %, 45 %, and 60 % by ...

33. Analysis of C-S-H Gel and Cement Paste by Small-Angle Neutron Scattering
Published: 1/16/2007
Authors: Andrew John Allen, J Thomas
Abstract: The role of small-angle x-ray and neutron scattering (SAXS and SANS) in the characterization of cement is briefly reviewed. The unique information obtainable from SANS analysis of C-S-H gel in hydrating cement is compared with that obtainable by othe ...

34. Composition and Density of Amorphous Calcium-Silicate-Hydrate in Cement
Published: 1/16/2007
Authors: Andrew John Allen, J Thomas, Hamlin M Jennings
Abstract: Despite intensive research for over a century, the main binding reaction product of cement hydration, calcium-silicate-hydrate (C-S-H) gel, is not fully understood. By combining absolute-calibrated small-angle and ultrasmall-angle neutron and x-ray ...

35. Growth of Nanocrystalline Ceria Studied Using a USAXS Capillary Flow-Cell
Published: 7/1/2006
Authors: Vincent A Hackley, Andrew John Allen, P R Jemian, J M Raitano, S W Chan
Abstract: Nanocrystalline ceria particles, with dimensions as small as 2 nm, have been prepared at room temperature by a soft chemical route using aqueous cerium nitrate and hexamethylenetetramine (HMT) as reactants. HMT decomposes slowly in aqueous solution, ...

36. Advanced Neutron and X-ray Techniques for Insights into the Microstructure of EB-PVD Thermal Barrier Coatings
Published: 6/25/2006
Authors: A Kulkarni, A N Goland, H Herman, Andrew John Allen, T A Dobbins, F DeCarlo, J Ilavsky, Gabrielle Gibbs Long, S Fang, P Lawton

37. The Nucleation of Atomic Layer Deposited HfO2 Films, and Evolution of Their Microstruture, Studied by Grazing Incidence Small Angle X-ray Scattering Using Synchrotron Radiation
Published: 1/16/2006
Authors: Martin L Green, Andrew John Allen, Xiang Li, Junling Wang, J Ilavsky, A Delabie, R Puurunen, B Brijs

38. Analysis of C-S-H Gel and Cement Paste by Small-Angle Neutron Scattering
Published: 12/7/2005
Authors: Andrew John Allen, J Thomas

39. Microstructure Characterization of Thermal Barrier Coating Deposits Practical Models from Measuremen
Published: 9/1/2005
Authors: J Ilavsky, Andrew John Allen, T A Dobbins, A Kulkarni, H Herman

40. Characterization of Ceramics by X-ray and Neutron Small-Angle Scattering
Published: 6/1/2005
Author: Andrew John Allen

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