Harnessing light-powered nanoscale electrical currents to propel emerging technologies

https://phys.org/news/2024-02-harnessing-powered-nanoscale-electrical-currents.html

"patterning and optical control over nanoscale currents on vectorial metasurfaces... asymmetric, gold nano-antennas. capturing and focusing light forming optical hot spots exciting electrons on graphene layer... teardrop shape's inversion symmetry defines directionality hot electrons (charge current) along structure, controllable and tunable exciting different hot spot combinations: current amplitude, location, direction, > ps response speed... microelectronics, night vision, THz communication, spectroscopy, nano-scale magnets"