Faraday wave lattice as an elastic metamaterial

L. Domino, M. Tarpin, S. Patinet, and A. Eddi ; Phys. Rev. E 93, 050202(R), (2016)

Metamaterials enable the emergence of novel physical properties due to the existence of an underlying subwavelength structure. Here, we use the Faraday instability to shape the fluid-air interface with a regular pattern. This pattern undergoes an oscillating secondary instability and exhibits spontaneous vibrations that are analogous to transverse elastic waves. By locally forcing these waves, we fully characterize their dispersion relation and show that a Faraday pattern presents an effective shear elasticity. We propose a physical mechanism combining surface tension with the Faraday structured interface that quantitatively predicts the elastic wave phase speed, revealing that the liquid interface behaves as an elastic metamaterial.

Haut de page



À lire aussi...

Forbidden directions for the fracture of thin anisotropic sheets : an analogy with the Wulff plot

A. Takei, B. Roman, J. Bico, E. Hamm & F. Melo, Physical Review Letter, 110 144301 (2013) It is often postulated that quasistatic cracks (...) 

> Lire la suite...

The force of impacting rain

D. Soto, A. Borel De Larivière, X. Boutillon, C. Clanet and D. Quéré, Soft Matter, 2014, 10, 4929. Drop impacts are difficult to characterize due to (...) 

> Lire la suite...

 

Informations Pratiques

Laboratoire : 01 40 79 45 22
Directeur : Damien Vandembroucq
Codirecteur : Philippe Petitjeans
Administratrice : Frédérique Auger (01 40 79 45 22)
Gestionnaire : Claudette Barez (01 40 79 58 53)
Courriel : dir (arobase) pmmh.espci.fr

Nous rendre visite