In order to investigate the recoverability of the G-CAPode, the system was cyclically polarized between 0 V Ubias and different negative and positive Ubias (Figure ). For every bias stage, the device was cycled five times. As Figure , b reveal, the potential distribution as well as the corresponding I-U curves could be retained regardless of how high the Ubias applied before was. Same observations could be made when cyclically positive Ubias were applied (Figure ) indicating a reliable and promptly switching with fast potential adjustment between the "off state" and different Ubias.