Ultrasound Lens

Ultrasound images are fuzzy because sound is difficult to “focus.”  But with an aluminum array of narrow resonance cavities filled with water, University of Illinois (Urbana-Champaign) engineering professor Nicholas Fang has created the world’s first acoustical focusing device.  In a way, it works like a pipe organ.  Resolving the focus issue was the first step; creating the actual image is the next, but Fang believes, and others agree, that it is possible to have a high resolution image, rivaling CT, with an “acoustic superlens.”          MORE

 Image Credit: Nicholas Fang and Technology Review