A new generation of futuristic robots could be powered by gel packs inspired by the electric eel, according to new research. Experts created the biologically based batteries by harnessing the same chemical process used by the fish to stun their prey and defend against predators. It could lead to the development of flexible, transparent, bio-compatible energy sources for use in everything from cyborgs to implantable gadgets. A new generation of futuristic robots could be powered by gel packs inspired by the electric eel, according to new research. To create their artificial electrical organ, the team used a 3D bioprinter to deposit droplets of liquid onto plastic base layers and set them into gels using a UV light.