Video

Controlling a Gut Bot's Position

Researchers at Carnegie Mellon University have made a swallowable capsule robot that they can anchor to specific spots in the gut. In the center of the capsule robot rests a leg; the transparent polymer elastomer footpad is visible. The footpads are covered with oil-coated micropillars that stick to tissue without damaging it.

• Reporting by Kristina Grifantini
• July 31, 2009