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Brillouin light scattering from a biopolymer gel: hypersonic sound waves in gelatin |
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| Authors: | A. Bot R. P. C. Schram G. H. Wegdam |
| Affiliation: | (1) Vlaardingen, Unilever Research Laboratorium, Olivier van Noortlaan 120, 3133 AT Vlaardingen, The Netherlands;(2) Van der Waals-Zeeman Laboratory, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands |
| Abstract: | Rayleigh-Brillouin light scattering experiments were performed on gelatin gels in order to obtain the (hypersonic) sound velocity and sound attenuation as a function of gelatin concentration. The results show that in the high frequency regime there is a strong coupling in the gel between the dynamics of the network and that of the fluid. The network sound velocity varies with 1/2. Sound attenuation increases with increasing gelatin concentration. |
| Keywords: | Gels gelatin Rayleigh-Brillouin light scattering hypersonic sound Marqusee Deutch hydrodynamical model |
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