A look at gallium nitride chips, which could replace silicon chips in a growing range of electronics and be produced in conventional fabs, unlike graphene chips (Christopher Mims/Wall Street Journal)

Christopher Mims / Wall Street Journal: A look at gallium nitride chips, which could replace silicon chips in a growing range of electronics and be produced in conventional fabs, unlike graphene chips  —  Gallium, once an industrial-waste product, is transforming our increasingly electrified world
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