Thermal transport in fractal systems

Recent experiments on the thermal transport in systems with partial fractal geometry, silica aerogels, are reviewed. The individual contributions from phonons, fractons and particle modes, respectively, have been identified and can be described by quantitative models consistent with heat capacity da...

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Bibliographic Details
Published in:Physica A 1992-12, Vol.191 (1), p.328-334
Main Author: Kjems, Jørgen K.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
Statistical physics, thermodynamics, and nonlinear dynamical systems
Transport processes
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Summary:Recent experiments on the thermal transport in systems with partial fractal geometry, silica aerogels, are reviewed. The individual contributions from phonons, fractons and particle modes, respectively, have been identified and can be described by quantitative models consistent with heat capacity data. The interpretation in the particle mode regime sheds light on the mechanisms for thermal conductivity in normal vitreous silica.
ISSN:0378-4371
1873-2119
DOI:10.1016/0378-4371(92)90547-4