Archimedes pointed out that with a lever he could move the world.
He most likely would have been surprised to learn that a team of six microrobots, weighing just 3.5 ounces in total, could pull a car weighing 3,900 pounds.
A group of researchers at the Biomimetics and Dexterous Manipulation Laboratory at Stanford University has been exploring the limits of friction in the design of tiny robots that have the ability to pull thousands of times their weight, wander like gecko lizards on vertical surfaces or mimic bats.
