Anisotropic Metamaterials for Full Control of Acoustic Waves

Johan Christensen, F. Javier García de Abajo

Research output: Contribution to journalJournal articleResearchpeer-review


We study a class of acoustic metamaterials formed by layers of perforated plates and producing negative refraction and backward propagation of sound. A slab of such material is shown to act as a perfect acoustic lens, yielding images with subwavelength resolution over large distances. Our study constitutes a nontrivial extension of similar concepts from optics to acoustics, capable of sustaining negative refraction over extended angular ranges, with potential application to enhanced imaging for medical and detection purposes, acoustofluidics, and sonochemistry.
Original languageEnglish
Article number124301
JournalPhysical Review Letters
Issue number12
Number of pages15
Publication statusPublished - 2012
Externally publishedYes


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