Today this material can seal pipes and brave the ocean. But someday it could be used in surgery or underwater repairs Researchers glued a rubber duck to a rock by the sea using an artificial-intelligence-designed hydrogel. Technology On the shores of a beach in northern Japan, waves pummel a rubber duck stubbornly stuck to a rock. Thanks to a new supersticky hydrogel lining its base, the toy won’t budge. Hydrogels are soft, jellylike materials used in many fields. In medicine, they can dress
