Experts reveal 5 cutting-edge ultrasound technologies

Ultrasound can do a whole lot more than create images of unborn babies. Since it first became a near-indispensable medical tool in the 1930s, technology that produces sound waves so high-pitched that humans can't hear them has found use in almost every branch of industry. The vibrations it creates can kill bacteria, weld plastics and even help to mature brandies in a matter of days rather than years. Today, ultrasound is finding its way into even more applications, powering inventions that have the potential to make huge changes in their fields. We are on the brink of a real contactless alternative to touch-screen technology.