WASHINGTON UNIVERSITY IN ST. LOUIS IMAGE: FLEXIBLE AND VERSATILE AIRY BEAM-ENABLED BINARY ACOUSTIC METASURFACES (AB-BAMS) FOR ULTRASOUND BEAM MANIPULATION. A DEMONSTRATED THE AB-BAMS IN WATER. CREDIT: CHEN LAB/WASHU Researchers at Washington University in St. Louis recently invented a technique for generating ultrasound waves that can self-bend, like a rainbow. Airy beams (named for English scientist...
