Abstract: Flexible implant for electrically recording or stimulating a nerve structure, said flexible implant comprising: a first layer of electrically insulating diamond; an electrode of electrically conductive doped diamond, in contact with the first layer of electrically insulating diamond; an electrically conductive layer in contact with the electrode and the first layer, so as to define a conductive track for the electrode; and a second layer of electrically insulating diamond, at least in contact with the electrically conductive layer and a remaining portion of the first layer, all of the above arranged such that: electrically insulating diamond/electrically conductive doped diamond sealing is provided at the electrode (3) by resumption of epitaxial growth; and the electrically conductive layer is encapsulated by the electrode (3), the first layer and the second layer, at the electrode and over the entirety of the remaining surface thereof except over an area defining an electrical contact.

Abstract: A method for detecting the presence of skatole in a sample of pig adipose tissue, wherein the method comprises at least the steps of: a) subjecting an organic extract of the adipose tissue sample to an electrochemiluminescence reaction; b) measuring the luminescence intensity during step a) and, if the measured luminescence intensity exceeds a threshold value, deducing the presence of skatole in the sample of adipose tissue. The method also makes it possible, if skatole is present in the organic extract, to determine the content thereof.

Abstract: Flexible implant for electrically recording or stimulating a nerve structure, said flexible implant comprising: a first layer of electrically insulating diamond; an electrode of electrically conductive doped diamond, in contact with the first layer of electrically insulating diamond; an electrically conductive layer in contact with the electrode and the first layer, so as to define a conductive track for the electrode; and a second layer of electrically insulating diamond, at least in contact with the electrically conductive layer and a remaining portion of the first layer, all of the above arranged such that: electrically insulating diamond/electrically conductive doped diamond sealing is provided at the electrode (3) by resumption of epitaxial growth; and the electrically conductive layer is encapsulated by the electrode (3), the first layer and the second layer, at the electrode and over the entirety of the remaining surface thereof except over an area defining an electrical contact.

Abstract: A device for detecting and/or measuring out one or more chemical compounds and a cell for forming the device, the device including at least one first and one second vibrating surface, each having a resonance frequency which varies when placed in presence of at least one chemical compound to be detected, and at least one first system actuating the first and the second vibrating surface to vibrate the first vibrating surface. The first actuating system is configured to generate a first mechanical wave remote from the first and the second vibrating surface, the first actuating system arranged in the device such that the first mechanical wave is transmitted to the first and the second vibrating surfaces to vibrate the first and the second vibrating surfaces.

Abstract: A microelectrode (2) for neural interfacing applications comprises a first substrate layer (4), a second attachment layer (6), and a third layer (8) forming the active part of the electrode (2) of which the material consists of synthetic diamond made in electrically conductive by doping with atoms chosen from boron, nitrogen and phosphorus atoms. The material of the third layer (8) is a textured material that comprises a compact assembly, in the form of a brush, of tubes (26) each comprising, in the form of at in least one peripheral outer layer, polycrystalline diamond made electrically conductive by doping. The tubes (26) are separated from each other at the first fixed ends (28) of same and project the free ends (30) of same away from the first and second layers (4, 6) in a direction that is substantially vertical relative to the extension plane (20) of the second layer (6). A method for producing said microelectrode is also described.

Abstract: A method for electrochemically activating a doped diamond electrode by bringing the electrode into contact with an aqueous solution containing an electrolyte and applying at least one electrical pulse to the electrode. This method may be used to restore the electrochemical reactivity of a doped diamond-based electrode, the activation of the electrode in some cases possibly being done in the same aqueous solution containing an electrolyte in which the electrode lost its electrochemical reactivity.

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: A method of manufacturing a diamond layer having a porous three-dimensional structure, the method being of the type which includes growing the diamond layer from a sacrificial material and gradually decomposing said sacrificial material during growth of the diamond layer, said material including the following steps; 1) provision of a substrate capable of supporting the plasma-enhanced chemical vapor deposition growth of the diamond layer on at least one of the surfaces of the substrate, the substrate comprising, on said at least one surface thereof, a layer made of a sacrificial material having a porous three-dimensional structure capable of gradually decomposing upon contact with said plasma, the layer of sacrificial material containing diamond grains of nanometric size, and 2) growth by plasma-enhanced chemical vapor deposition of the diamond layer from diamond grains and concomitant and gradual decomposition of the sacrificial material upon contact with said plasma.

Abstract: A method for electrochemically activating a doped diamond electrode by bringing the electrode into contact with an aqueous solution containing an electrolyte and applying at least one electrical pulse to the electrode. This method may be used to restore the electrochemical reactivity of a doped diamond-based electrode, the activation of the electrode in some cases possibly being done in the same aqueous solution containing an electrolyte in which the electrode lost its electrochemical reactivity.

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: A method of manufacturing a diamond layer having a porous three-dimensional structure, the method being of the type which includes growing the diamond layer from a sacrificial material and gradually decomposing said sacrificial material during growth of the diamond layer, said material including the following steps; 1) provision of a substrate capable of supporting the plasma-enhanced chemical vapour deposition growth of the diamond layer on at least one of the surfaces of of the substrate, the substrate comprising, on said at least one surface thereof, a layer made of a sacrificial material having a porous three-dimensional structure capable of gradually decomposing upon contact with said plasma, the layer of sacrificial material containing diamond grains of nanometric size, and 2) growth by plasma-enhanced chemical vapour deposition of the diamond layer from diamond grains and concomitant and gradual decomposition of the scrificial material upon contact with said plasma.