Tiny objects levitated by sound

Philip Bassindale, a researcher at the University of Bristol, demonstrates acoustic levitation by creating a “pearl necklace” of polystyrene balls in a standing wave of ultrasound. This video was recorded in connection with a Physics World podcast about the nature and applications of ultrasound, which you can listen to here.

 

Yoav Medan: Ultrasound surgery -- healing without cuts

Imagine having a surgery with no knives involved. At TEDMED, surgeon Yoav Medan shares a technique that uses MRI to find trouble spots and focused ultrasound to treat such issues as brain lesions, uterine fibroids and several kinds of cancerous growths.

Other TED Talks

Medical Imaging: Getting Under Your Skin

This is a very good lecture!

Sound, motion, and a bit of fury pulse through this dynamic investigation into several imaging techniques used to examine the human body. Physicist Paul Lyman immediately captures the attention of his audience with his entrance, bumping down the long flight of lecture-room stairs to the front of the room on his bicycle. He hops off, removes his helmet and plunges into the world of X rays, computer tomography (CT scan), nuclear magnetic resonance imaging (MRI), and ultrasound.

Source:  UW-Milwaukee Science Bag

Other UWM Science Bag videos