Researchers create antenna for nanoscale light sources using unusual placement of semiconductor material

https://phys.org/news/2023-07-antenna-nanoscale-sources-unusual-placement.html

"putting the semiconductor on top of the graphene electrode—completely outside the tunnel junction... varying the voltage applied to the tunnel junction and measuring the current flowing through it. This measurement showed a clear resonance, which matched a so-called exciton resonance of the semiconductor material... semiconductor like an antenna... light sources that measure few nm, 1,000 smaller than wavelength light they produce"

Related: Researchers use liquid metal and laser ablation to create stretchable miniature antennas

https://phys.org/news/2023-09-liquid-metal-laser-ablation-stretchable.html