An unexpected antenna for nanoscale light sources

Researchers at ETH have created an antenna for light sources on a chip using an unusual placement of a semiconductor material. In the future, efficient nanoscale LEDs and lasers could be produced in this way.

Sketch of the semiconductor material with the new antenna solution - painted as a picture with green background
Physics in acrylic painting: An artist’s impression of the ETH experiment in which a semiconductor material (orange/blue dots) acts as an antenna. (Image: Sotirios Papadopoulos / ETH Zurich)

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