MIT Develops Transparent Hydrogel Robot Hand To Grab Unsuspecting Fish

February 2, 2017


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.

  • The_Wretched

    Any word on how much the therapy for the fish ran?

  • GeneralDisorder

    This would make aquarium cleaning a lot easier.

  • How long before giant, invisible, robot hands are plucking us into the sky?!

  • That is literally the first thing I thought about. Giant invisible sea monsters.


  • Bling Nye

    Not soon enough.

    Not. Soon. Enough.

  • Jenness

    I watched this and then instantly thought of Mr. Burns on the Simpsons perverting Lisa's recycling of plastic 6 pack holders into scooping all the fish out of the sea to make fish slurry in the easiest more horrifying way possible.

  • Big Dog on Krampus

    after grabbing the fish, the robot turned to the researchers and told them to smell its fingers

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