Abstract: A biocompatible carbon based electrode, and its preparation process are described. The electrode is formed by first and second biocompatible chemically oxygen terminated or H-terminated carbon-based materials. The first material is configured to promote the growth or at least the direct interfacing of adult neurons on the first material without substantially promoting the growth and direct interfacing of glial cells on the first material. The second material presents a peptide coating to promote the growth and at least the direct interfacing of adult glial cells.

Abstract: A biocompatible carbon based electrode, and its preparation process are described. The electrode is formed by first and second biocompatible chemically oxygen terminated or H-terminated carbon-based materials. The first material is configured to promote the growth or at least the direct interfacing of adult neurons on the first material without substantially promoting the growth and direct interfacing of glial cells on the first material. The second material presents a peptide coating to promote the growth and at least the direct interfacing of adult glial cells.

Abstract: A method for manufacturing an intraocular retinal implant including: providing a mold capable of supporting growth of a layer of doped diamond, the mold including, on one face, elements all depressed or all projecting with respect to the surface of the face, and constituting a pattern cavity for the electrodes of the implant which it is desired to obtain; producing the doped diamond electrodes by growing a layer of doped diamond in all or part of a space occupied by the pattern cavity elements; forming a first insulating layer on the face of the mold including the pattern cavity; producing interconnection lines by depositing an electrically conductive material at least in spaces not covered by the first insulating layer; forming a second insulating layer on the mold face including the pattern cavity, the second layer covering the interconnection lines, the first and second insulating layers forming a flexible plate of the implant; removing the mold.

Abstract: The invention relates to an implant which includes, in order to electrically stimulate a nerve structure, in particular the retina, an electrically insulating substrate (1), a array of recesses (2) formed in an upper surface of the substrate, stimulation electrodes (3) arranged at the bottom of the recesses, and an electrically conductive layer forming a ground plane (4) at the upper portion of the recesses. The sizes of the recesses and of the electrodes of the implant are such that the spatial selectivity of the stimulation current applied to the nerve structure is maximized.

Abstract: A method for manufacturing an intraocular retinal implant including: providing a mold capable of supporting growth of a layer of doped diamond, the mold including, on one face, elements all depressed or all projecting with respect to the surface of the face, and constituting a pattern cavity for the electrodes of the implant which it is desired to obtain; producing the doped diamond electrodes by growing a layer of doped diamond in all or part of a space occupied by the pattern cavity elements; forming a first insulating layer on the face of the mold including the pattern cavity; producing interconnection lines by depositing an electrically conductive material at least in spaces not covered by the first insulating layer; forming a second insulating layer on the mold face including the pattern cavity, the second layer covering the interconnection lines, the first and second insulating layers forming a flexible plate of the implant; removing the mold.

Abstract: The invention relates to an implant which includes, in order to electrically stimulate a nerve structure, in particular the retina, an electrically insulating substrate (1), a array of recesses (2) formed in an upper surface of the substrate, stimulation electrodes (3) arranged at the bottom of the recesses, and an electrically conductive layer forming a ground plane (4) at the upper portion of the recesses.

Abstract: A semiconductor substrate including at least a layer based on doped diamond with a thickness greater than or equal to approximately 10 ?m, a layer based on at least one semiconductor or a stack of layers including the semiconductor-based layer, and a layer based on intrinsic diamond disposed against the layer based on doped diamond, between the layer based on doped diamond and the semiconductor-based layer.

Abstract: A detector that includes a sensing plate formed of a thin synthetic diamond plate is provided. The detector is characterized in that it includes means for heating the sensing plate. The heating means comprises a thin heating plate whose material is essentially constituted of carbon atoms. The invention also relates to a device that includes a detector of the aforementioned type, a measuring method that uses such a detector, and a method for producing this detector.