Breakthrough in electrically tunable Ggaphene devices could lead to the development of “beyond-5G” wireless technology

https://scitechdaily.com/breakthrough-in-electrically-tunable-graphene-devices-could-lead-to-the-development-of-beyond-5g-wireless-technology/

"graphene-based tunable THz resonator... gold-foil gate electrode forming bottom reflective mirror. Above it, a graphene layer is book-ended with electrodes, forming tunable top mirror... non-volatile ionic liquid electrolyte layer sits between mirrors, enabling control of top mirror’s reflectivity by changing applied voltage. In middle of device, between mirrors, molecules of alpha lactose, sugar commonly found in milk... controlled by two adjusters"