Aluminum silicate nanoaggregates grown on organic multilayer templates were imaged by a transmission electron microscope. Images were processed by fractal and FOURIER analysis. The estimated mass fractal dimension suggested that aggregate formation was diffusion limited. Nonlinear filtering of FOURIER spectra, which included comparison with a model spectral density, yielded «enhanced power spectra». Some morphological descriptors were extracted from the latter. The main result, materials classification, was attained by a two-scale procedure. Some descriptors were related to the material properties such as nanoparticle size distribution and sharpness of aggregate boundaries
Crosta, G., Sung, C., Kang, B., Ospina, C., Stenhouse, P. (2003). Quantitative morphology of aluminum silicate nanoaggregates. In J. Piqueras, F.R. Zypman, D.A. Bonnell, A.P. Shreve (a cura di), Materials Research Society Symposium - Proceedings (pp. 311-316). Warrendale, PA : Materials Research Society [10.1557/PROC-738-G15.3].
Quantitative morphology of aluminum silicate nanoaggregates
Crosta, G;
2003
Abstract
Aluminum silicate nanoaggregates grown on organic multilayer templates were imaged by a transmission electron microscope. Images were processed by fractal and FOURIER analysis. The estimated mass fractal dimension suggested that aggregate formation was diffusion limited. Nonlinear filtering of FOURIER spectra, which included comparison with a model spectral density, yielded «enhanced power spectra». Some morphological descriptors were extracted from the latter. The main result, materials classification, was attained by a two-scale procedure. Some descriptors were related to the material properties such as nanoparticle size distribution and sharpness of aggregate boundaries
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