Eh, one more combo post for the night. Click both links for video.
Robotic arm rides, 5 cents (Engadget)
Also via Engadget:
A Tiny Robotic Hand (Technology Review)
“It is the world’s smallest robotic hand, and [it] could be used to perform microsurgery,” says Chang-Jin Kim, the lead researcher at UCLA, who says the device is safe for biological applications. Since it runs on gas pressure instead of electricity, it can be used in both dry and wet environments.
The “microhand” measures one millimeter across when closed into a fist. It consists of four “fingers,” each of which is made from six silicon wafers, with polymer balloons doing the work of “muscles” at the wafers’ joints.