Flexible monolithic all polycrystalline silicon carbide neural interface device and method of manufacture

An implantable neural interface device for placement to provide neural signal transduction with a brain of a subject of interest, the device comprising:

• at least one elongated probe to be placed in a brain of a subject of interest, the at least one elongated probe comprising a plurality of electrodes positioned on a surface of the elongated probe, each of the plurality of electrodes comprising:
• a conductive mesa consisting of polycrystalline silicon carbide (poly-SiC);
• an insulative layer consisting of amorphous SiC, the insulative layer positioned to surround the conductive mesa absent a window through the amorphous SiC exposing a surface of the conductive mesa;
• a probe base integral with the elongated probe, the probe base comprising a plurality of contact pads, each of the plurality of contact pads in electrical communication with one of the plurality of electrodes;
• and
• one or more electrical traces connecting the plurality of electrodes to the plurality of contact pads of the probe base, wherein the one or more electrical traces consist of polycrystalline SiC.