Optical antennas trap and control light with the help of graphene


R&D – Optical circuits and devices could make signal processing and computing much faster. However, propagating light needs at least the space of half its wavelength, which is much larger than state-of-the-art electronic building blocks in our computers. For that reason, a quest for squeezing light to propagate it through nanoscale materials arises.

The wonder material graphene, a single layer of carbon atoms with extraordinary properties, has been proposed as one solution. The wavelength of light captured by a graphene layer can be strongly shortened by a factor of 10 to 100 compared to light propagating in free space. As a consequence, this light propagating along the graphene layer—called graphene plasmon—requires much less space. more> http://tinyurl.com/ltxsj4d

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