Acoustic Bottle Beams from Berkeley Lab Hold Promise for
Imaging, Cloaking, Levitation and Other Apps
There’s a new wave of sound on the horizon carrying with it
a broad scope of tantalizing potential applications, including advanced
ultrasonic imaging and therapy, and acoustic cloaking, levitation and particle
manipulation. Researchers with the U.S. Department of Energy (DOE)’s Lawrence
Berkeley National Laboratory (Berkeley Lab) have developed a technique for
generating acoustic bottles in open air that can bend the paths of sound waves
along prescribed convex trajectories.