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Acoustic phenomena in filled porous glasses by time-resolved spectroscopy

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Abstract.

We studied the propagation of ultrasonic acoustic waves in two porous glasses characterized by different pore diameters (4 and 200 nm) filled with carbon tetrachloride. Using a time-resolved optical spectroscopic technique (Transient Grating) we can measure the acoustic dynamics of these systems. The sound velocities, measured in both the samples, show high values compared with the sound velocity of bulk carbon tetrachloride; they cannot be predicted by the simple effective medium model, but are in good agreement with the estimate obtained from the Biot theory.

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Authors and Affiliations

  1. European Lab. for Non-Linear Spectroscopy (LENS), Univ. di Firenze, via N. Carrara 1, 50019 Sesto Fiorentino, Firenze, Italy

    R. Cucini, A. Taschin, C. Ziparo, P. Bartolini & R. Torre

  2. INFM-CRS-Soft Matter (CNR), c/o Univ. la Sapienza, Piaz. A. Moro 2, 00185, Roma, Italy

    A. Taschin, C. Ziparo, P. Bartolini & R. Torre

  3. Dip. di Fisica, Univ. di Firenze, via Sansone 1, 50019 Sesto Fiorentino, Firenze, Italy

    R. Torre

Authors
  1. R. Cucini
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  2. A. Taschin
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  3. C. Ziparo
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  4. P. Bartolini
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  5. R. Torre
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Cucini, R., Taschin, A., Ziparo, C. et al. Acoustic phenomena in filled porous glasses by time-resolved spectroscopy. Eur. Phys. J. Spec. Top. 141, 133–136 (2007). https://doi.org/10.1140/epjst/e2007-00030-2

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  • DOI: https://doi.org/10.1140/epjst/e2007-00030-2

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