FRACTON DIMENSION OF A MUTUALLY SELF-SIMILAR SERIES OF BASE-CATALYZEDAEROGELS

Authors
ANGLARET E HASMY A COURTENS E PELOUS J VACHER R
Citation
E. Anglaret et al., FRACTON DIMENSION OF A MUTUALLY SELF-SIMILAR SERIES OF BASE-CATALYZEDAEROGELS, Journal of non-crystalline solids, 186, 1995, pp. 131-136
Citations number
19
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of non-crystalline solids → ACNP
ISSN journal
00223093
Volume
186
Year of publication
1995
Pages
131 - 136
Database
ISI
SICI code
0022-3093(1995)186:<131:FDOAMS>2.0.ZU;2-6
Abstract
Mutual self-similarity of a series of base-catalyzed aerogels was esta blished by comparison of small-angle neutron scattering data and numer ical simulations. Investigation of phonon-fracton crossover in these s amples by Brillouin scattering allowed determination of the fracton di spersion curve. A fracton dimension ($) over bar d = 1.1 +/- 0.1 was o btained. The correlation between the sharpness of the phonon-fracton c rossover and the well-defined structure of the materials is discussed.