Researchers build first physical ‘metatronic’ circuit

(PhysOrg.com) — The technological world of the 21st century owes a tremendous amount to advances in electrical engineering, specifically, the ability to finely control the flow of electrical charges using increasingly small and complicated circuits. And while those electrical advances continue to race ahead, researchers at the University of Pennsylvania are pushing circuitry forward in a different way, by replacing electricity with light.

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Researchers build first physical ‘metatronic’ circuit