Engineers on the University of Pennsylvania have flipped the turn on a new kind of computer circuit. Unlike conventional silicon, the newest chip uses light — not electricity — to execute its logic.
By creating a range of nano-rods, light-flow are treated like voltage and current. These rods then can be configured to emulate electric components like resistors, inductors and capacitors.
The advantages of the so-called “metatronic” system could be smaller, faster and much more efficient computer chips, that is clearly a welcome prospect. Another curious property they discovered, is exactly what it calls “stereo-circuitry. ” Effectively some nano-rods can behave as two different circuits, according to the plane from the field.
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