First Acoustic ‘Superlens’
CHAMPAIGN, Ill., June 25, 2009 – The world’s first acoustic “superlens,” an innovation that could have practical implications for high-resolution ultrasound imaging, nondestructive structural testing of buildings and bridges, and novel underwater stealth technology, has been created by researchers at the University of Illinois. The team, led by Nicholas X. Fang, professor of mechanical science and engineering, successfully focused ultrasound waves through a flat metamaterial lens on a spot roughly half the width of a...