Abstract: In some embodiments, the present disclosure pertains to a device comprising at least one implantable microelectrode. In some embodiments, the implantable microelectrode comprises at least one fiber of aligned carbon nanotubes partially coated with a layer of biocompatible insulating material. In some embodiment of the present disclosure, at least one end of the fiber of aligned carbon nanotubes is uncoated. In some embodiments, the uncoated end of the fiber is electrically active. In some embodiments, the device further comprises a removable inserting device attached to the implantable microelectrode. In some embodiments, the present disclosure pertains to a method of implanting an implantable microelectrode into a subject. In some embodiments, the present disclosure relates to a method of fabricating an implantable microelectrode.