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Brillouin-scattering measurements of phonon-fracton crossover in silica aerogels
Abstract
Brillouin scattering on porous silica aerogels reveals the onset of the phonon-to-fracton crossover in both the wave-vector and density dependence of the spectra. The results are consistent with a fractal description, giving both the fractal dimension D and the spectral dimension d\ifmmode \tilde{}\else \~{}\fi{}. In the hypothesis that the samples form single infinite clusters, the numerical values suggest that scalar elasticity is significant in these materials.
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Citations
Cited by
Physics of inhomogeneous inorganic materials
Nan, C.-W. (1993) · Progress in Materials Science · doi:10.1016/0079-6425(93)90004-5 · Cited by 1,050
Structure and self-similarity of silica aerogels
Vacher, R., Woignier, T., Pelous, J., & Courtens, E. (1988) · Physical Review B · doi:10.1103/physrevb.37.6500 · Cited by 454
Self-citationElectromagnetic properties of small-particle composites
Shalaev, V. M. (1996) · Physics Reports · doi:10.1016/0370-1573(95)00076-3 · Cited by 358
Mechanical Properties and Brittle Behavior of Silica Aerogels
Woignier, T., Primera, J., Alaoui, A., Etienne, P., Despestis, F., & Calas-Etienne, S. (2015) · Gels · doi:10.3390/gels1020256 · Cited by 117
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Metadata
- Authors
- Courtens, E., Pelous, J., Phalippou, J., Vacher, R., & Woignier, T.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1987-01-12
- Volume
- 58
- Issue
- 2
- Pages
- 128-131
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2022304133
- Cited by
- 201
- References
- 0
- FWCI
- 20.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- Courtens, E., Pelous, J., Phalippou, J., Vacher, R., & Woignier, T. (1987). Brillouin-scattering measurements of phonon-fracton crossover in silica aerogels. Physical Review Letters. https://doi.org/10.1103/physrevlett.58.128
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