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...

A non-local rheology for granular flows across yield conditions

M. Bouzid, M. Trulsson, P. Claudin, E. Clément and B. Andreotti, Phys. Rev. Lett. 111, 238301 (2013). The rheology of dense granular flows is (...) 

> Lire la suite...

Giant ripples on comet 67P/Churyumov–Gerasimenko sculpted by sunset thermal wind

Pan Jia, Bruno Andreotti, and Philippe Claudin, PNAS (2017) Abstract : Explaining the unexpected presence of dune-like patterns at the surface of (...) 

> 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