Cascade of Electronic Properties (IMAGE) Princeton University Caption A cascade of changes in the electronic properties of magic-angle graphene are observed by high-resolution scanning tunneling microscopy as a function of applied voltage, which tunes the electron filling between fully occupied (v = 4) and empty (v = -4). Credit Image by the Yazdani lab at Princeton University Usage Restrictions Image by the Yazdani lab at Princeton University License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.