Neural technologies have been evolved using micro- and nanosystems for in vivo and in vitro studies focused in understanding the brain. Stimulating and recording electrodes have been widely used to study the neural electrical activity; thus, significant efforts are being invested in the modification of the microelectrode surface material to improve the contact of the electrode-electrolyte interface.
In particular, we are investigating the use of graphene as the active material to interface neural tissues. In our group we have developed the technological processes to integrate graphene solution-gated field-effect transistors (SGFETs) in flexible probes for electrocorticography (ECoG) recordings. We are exploring the particular capabilities of these devices in collaboration with other research groups and we are also evaluating its potential for biosensing applications.