Structure and dynamics of fractal aerogels

Structure and dynamics of fractal aerogels
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分形气凝胶的结构和动力学

DOI:
10.1007/bf01304252
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发表时间:
1987
期刊:
影响因子:
--
通讯作者:
R. Vacher
R. Vacher
中科院分区:
--
文献类型:
--
作者:
E. Courtens;R. Vacher

文献摘要

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相似文献

二氧化硅气凝胶在广泛的密度和制备条件下形成相互自相似的分形结构。这允许将纵向声波获得的动力学结果缩放到声子与分形交叉的开始。找到了分形维数的“有效”值,并讨论了该值的各种可能的解释。
Silica aerogels form mutually self-similar fractal structures for a broad range of densities and preparation conditions. This allows to scale dynamical results obtained on longitudinal acoustic waves up to the onset of the phonon to fracton crossover. An “effective” value of the fracton dimensionis found, and various possible interpretations of that value are discussed.