This is a video demonstration of the transparent hydrogel robotic hand built by the evil geniuses at MIT. In the video, the hand repeatedly grabs an unsuspecting goldfish, presumably to give it nightmares about being grabbed my invisible hands. I've had that nightmare before, they always go for my ankles.
The hydrogel is shaped using laser cutting and 3D printing and can be controlled by injecting water through hollow channels in the structure. The water injection method allows for faster and strong motion than similar designs that are powered by osmosis.
In a striking demonstration of the technology, the team fabricated a hand-like robotic gripper and pumped water in and out of its "fingers" to make the hand open and close. The researchers submerged the gripper in a tank with a goldfish and showed that as the fish swam past, the gripper was strong and fast enough to close around the fish.
So is this going to replace nets in the aquarium section of the pet store or what? What are we using this for? Is this going to be like, a new claw-machine style game at the county fair to win fish? "Hot tub sex toy." I should have known.
Keep going for the video while I try to fish the last pickle out of the jar with a spoon.
Thanks to Amelie, who agrees robots have no right t run around grabbing fish like that all willy-nilly.