Damping of acoustic waves in dilute polymer solutions

Y. Tsori, P. G. De Gennes

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The longitudinal viscosity which may be measured via attenuation of ultrasound, is discussed. It was observed that for a compression wave in a liquid, individual molecules can move parallel or perpendicular to the direction of wave propagation. The existence of these two modes means that energy dissipation depends on two independent quantities; hence there are two fundamental viscosities. The pressure dependence of x may also be of use in block copolymer melts such as lamellar phase.

Original languageEnglish
Pages (from-to)8195-8197
Number of pages3
Issue number22
StatePublished - 2 Nov 2004
Externally publishedYes


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