INVESTIGATION OF DYNAMICAL SCALING IN A MUTUALLY SELF-SIMILAR SERIES OF BASE-CATALYZED AEROGELS

被引：26

作者：

ANGLARET, E

HASMY, A

COURTENS, E

PELOUS, J

VACHER, R

机构：

[1] Laboratoire de Science des Matériaux Vitreux, Université Montpellier II, Montpellier

来源：

EUROPHYSICS LETTERS | 1994年 / 28卷 / 08期

关键词：

D O I：

10.1209/0295-5075/28/8/009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The phonon-fracton crossover in a series of fractal aerogels of well-defined microstructure is investigated for the first time. Results of small-angle neutron scattering combined with simulations establish the mutual self-similarity of the series and its fractal dimension D congruent-to 1.7. Brillouin scattering is used to determine the fracton dimension related to tensorial elasticity, d congruent-to 1.1. Combined with Raman and neutron spectroscopic data, this allows to derive a consistent picture of dynamical scaling in relation with the structure of these materials.

引用

页码：591 / 596

页数：6

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