Micro-robots operate on a scale from a few microns to several millimeters. Untethered micro devices utilize magnetic fields or acoustic waves for precise propulsion. Biodegradable gels and ...

Solving a technical challenge that has stymied science for 40 years, researchers have built a robot with an onboard computer, sensors and a motor, the whole assembly less than 1 millimeter in size — ...

Tiny robots small enough to slip through blood vessels are moving from speculative fiction into the medical lab, promising treatments that work from the inside out. Instead of relying on scalpels and ...