Guo, Y.Y.GuoRusinek, C.A.C.A.RusinekRechenberg, R.R.RechenbergFan, B.B.FanBecker, M.F.M.F.BeckerLi, W.W.Li2022-03-142022-03-142018https://publica.fraunhofer.de/handle/publica/40761710.31438/trf.hh2018.67This abstract presents micromachined, implantable, all diamond microfibers to facilitate reliable, precision recording of extracellular biopotentials and neurotransmitter concentrations in neural networks (Fig. 1). Each of such microfibers consists of a conductive boron-doped polycrystalline diamond (BDD) core encapsulated in a thin insulating polycrystalline diamond (PCD) cladding. The BDD core enables single-unit recording and neurotransmitter sensing from target neurons with high spatiotemporal resolution and fidelity, while the PCD encapsulation serves as a biocompatible and hermetic package as well as a dielectric barrier to prevent signal cross-talking. The fully developed fibers had been successfully tested ex vivo in different chemicals under different concentrations.enconference paper