A group of researchers hailing from Bielefeld and Berlin, as well as other teams in Germany and Spain have demonstrated that graphene’s nonlinearity can “be efficiently controlled by applying comparatively modest electrical voltages to the material” Graphene Info
The nonlinearity can be controlled with how high the voltage is, making it fully tweakable and customizable.
This property has many uses, such as graphene-CMOS hybrid devices for tunable frequency conversion, efficient nonlinear terahertz modulators, shutters, switches, and more. ScienceAdvances
For more information about the technology, see this article on Graphene Info.
Image from Science Advances