ACTIVE FLUIDS

Rolling sound waves

A quantitative description of sound wave propagation in suspensions of self-propelled colloidal particles is achieved by combining microfluidics, video microscopy and theory.

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Fig. 1: Flocking patterns in active fluids.

courtesy of D. Geyer and D. Bartolo

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Correspondence to Jörn Dunkel.

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Dunkel, J. Rolling sound waves. Nature Mater 17, 759–760 (2018). https://doi.org/10.1038/s41563-018-0155-9

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