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A rare days-old ghost shark, an ethereal-looking relative of sharks and rays that is rare to find free-swimming in the ocean, has been discovered by scient

New 3D-Printable Hydrogel Changes Shape, Color in Response to Light Written by AZoMJan 6 2021 Engineers from Rutgers University took cues from the color-changing skin of squids, octopuses and cuttlefish to develop a 3D-printed smart gel that alters its shape upon exposure to light, turns into an 'artificial muscle,' and may pave the way for new military camouflage, flexible displays and soft robotics. This octopus has color-changing cells, called chromatophores, in its skin, a phenomenon that inspired Rutgers engineers. Image Credit: NOAA Okeanos Explorer Program, Galapagos Rift Expedition...