Pulsating Gels Could Power Tiny Robots To Deliver Drugs

... Published in Science, Pitt research could be used to develop micro-motors, drug-delivery devices.As a kid, did you ever put those little capsules into warm water and watch them grow into dinosaurs? When certain gels are put into a solution, they will not only expand, but also contract again, repeatedly, as if the little dinosaur grew and shrank over and over. [click link for full article] ...