Acoustic Metamaterial Could Enable Ultrahigh-Resolution Ultrasound Imaging
Thursday, May 28th, 2009[caption id="attachment_6935" align="alignright" width="332" caption="The acoustic metamaterial lens is composed of a planar network of subwavelength Helmholtz resonators. Image courtesy of Nicholas Fang."][/caption] Using an acoustic metamaterial, researchers at the University of Illinois at Urbana-Champaign succeeded in focusing ultrasound waves so that it exhibits a negative dynamic modulus--a phenomenon that doesn't ...
