Yahoo News is reporting the following
Scientists have created 300 nm wide coaxial cable that can transmit visible light. The cable has an inner wire of carbon surrounded by an insulator and an outer wire of aluminum. The center wire protrudes from the end of the cable to act as an antenna for the light signal - similar to the way an RF antenna collects RF energy. The interesting thing is that they showed the cable is capable of transmitting visible light at 380-750 nanometers through the 300 nm cable. This spits in the face of a key principle stating that light cannot pass through a hole much smaller than its wavelength.
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