Scientists uncover light absorbing properties of engineered achiral symmetric plasmonic metasurfaces

https://phys.org/news/2024-09-scientists-uncover-absorbing-properties-achiral.html

"dichroism exists in achiral structures: absorbs light differently depending light's wavefront handedness, due to interactions between different parts of light/ material... special kind of twisted light controls/ tunes absorption up to 50%... special twisted light improves light absorption efficiency,,, achiral structures are simpler to make, which could lead to better and more functional optical devices... plasmonic-based spectroscopy and sensing via enhanced optical metrology, optical switches"