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He’s worked with microelectrodes prior to now, and he suspects that graphene-based units could become actual competition for them in the future. Manufacturing giant microelectrode arrays can be very advanced and costly, Zeck says, but making giant sheets of graphene could presumably be more practical. The new gadget is roughly 1 centimeter square, however graphene sheets 1000’s of times bigger are already commercially available. By using them to make “cameras,” scientists might observe electrical impulses across greater organs. “What we’re in a position to do through the use of our graphene system is picture the whole surface concurrently,” says Halleh Balch, the study’s lead writer, who was a PhD scholar at Berkeley through the experiment. (She is currently a postdoctoral researcher at Stanford.) This is partly a consequence of graphene’s distinctive nature.

“Recording the voltage of 1 point—say, within the brain—is slightly like trying to watch a movie by taking …

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