Researchers have designed the first on-chip metamaterial with a refractive index of zero, meaning that the phase of light can travel infinitely fast.

Electrons are so 20th century. In the 21st century, photonic devices, which use light to transport large amounts of information quickly, will enhance or even replace the electronic devices that are ubiquitous in our lives today.

Source: To infinity and beyond: Light goes infinitely fast with new on-chip material — ScienceDaily

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