Acoustic Metamaterials

date February 20, 2015
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Friday, February 20, 2015 4:00 p.m. in ETC 4.150

Romain Fleury
Electrical and Computer Engineering Department
The University of Texas at Austin
http://www.ece.utexas.edu/

Metamaterials are artificially structured materials that are engineered to interact with waves in anomalous or extraordinary ways, leading to unconventional physical phenomena not found in natural materials, such as negative refraction and cloaking. They have been so far almost exclusively based on artificial structures that are inherently symmetric upon time-reversal. This talk will explore the largely uncharted scattering properties of a novel class of acoustic devices, metamaterials and metasurfaces, that are engineered to purposely break time-reversal symmetry. Several examples with strong application potential will be discussed, along with experimental results.