All silicon carbide long-lifetime neural interfaces – SiCNeural
Silicon carbide (SiC) is proposed as material to develop single material BMIs addressing the issue of their low lifetime. SiC is a biocompatible semiconductor, stiff material and therefore highly flexible for small thickness (<15 µm)). Moreover, small electrode thickness results in minimal foreign body response. The three SiC crystal phases (amorphous, poly- and single-crystalline) will be investigated as active electrode, insulating and support material. The proof-of-concept will be performed with the elaboration and in-vivo evaluation of an all-SiC very thin (<15µm) µECoG exhibiting long-term stability (several months), low impedance (<30kO at 1kHz), noise level (<3µV RMS for 1-5000Hz) and signal quality (surface multiunit/unit activity/LFPs detection). A nanowire array formation in electrode area will be employed to increase the recorded signal. Amorphous SiC surface will be functionalized for minimum tissue inflammation purposes.
Project coordination
Edwige BANO (Institut de la Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et de Caractérisation)
The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.
Partnership
LMGP Laboratoire des Matériaux et du Génie Physique
GIN GRENOBLE INSTITUT DES NEUROSCIENCES (GIN)
LTM LABORATOIRE DES TECHNOLOGIES DE LA MICROELECTRONIQUE
IMEP-LaHC Institut de la Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et de Caractérisation
SIMaP Sciences et Ingénierie, Matériaux, Procédés
ESYCOM LABORATOIRE ELECTRONIQUE, SYSTÈMES DE COMMUNICATIONS ET MICROSYSTÈMES
Help of the ANR 802,746 euros
Beginning and duration of the scientific project:
October 2021
- 48 Months
