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Acoustic phenomena and hydrodynamic flow in a water filled nano-porous glass studied by transient grating spectroscopy

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, , Citation R Cucini et al 2010 J. Phys.: Conf. Ser. 214 012032 DOI 10.1088/1742-6596/214/1/012032

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1 LENS, University di Firenze, Via, N. Carrara 1, I-50019 Sesto Fiorentino (Fi), Italy

2 Dip. di Fisica, University di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (Fi), Italy

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1742-6596/214/1/012032

Abstract

We present heterodyne detected transient grating measurements on water filled Vycor glass in the range of temperature 20-90 °C at the wave vector q = 1 μm-1. The data have been analyzed with the model of Pecker and Deresiewicz, which enables a consistent physical description of the measured complex dynamics. Our experimental results confirm that the system is well described by hydrodynamic laws in spite of nano-metric dimension of the pores.

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10.1088/1742-6596/214/1/012032