New theory shows one-way transmission materials should be possible for sound and light waves

(PhysOrg.com) — Physicist Stefano Lepri of the Italian National Research Council and his partner Giulio Casati of the University of Insubria, have published a paper in Physical Review Letters, where they demonstrate through mathematical theory that it should be possible to create asymmetric materials that allow most light or sound waves to pass through in one direction, while mostly preventing them from doing so when going the opposite way.

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New theory shows one-way transmission materials should be possible for sound and light waves