Abstract: A method for preparing carbon nanotubes, nanofibres or nanofilaments by decomposition of at least one carbon precursor in the presence of a catalyst, in which method continuously:—a first gas stream comprising a precursor of a catalyst is brought into contact with a porous substrate (43);—a second gas stream comprising at least one carbon precursor is brought into contact with said porous substrate (43);—said porous substrate (43) is heated to a temperature leading to the deposition of catalyst particles and to the catalytic growth of carbon nanotubes.

Abstract: A method for preparing a cable formed of carbon nanotubes, comprising decomposing at least one carbon precursor compound and at least one precursor compound of a catalyst on a porous substrate (43), in which method continuously: —a first gas stream comprising a precursor of a catalyst is brought into contact with a porous substrate (43); —a second gas stream comprising at least one carbon precursor is brought into contact with said porous substrate (43); —said porous substrate (43) is heated to a temperature leading to the deposition of catalyst particles and the catalytic growth of a carbon nanotube bundle, and preferably between 500° C. and 1000° C.

Abstract: Process for manufacturing an electrochemical capacitor comprising, in a leaktight casing: two electrodes, namely a positive electrode and a negative electrode, a separator that separates the two electrodes, and a liquid electrolyte. The process comprises the deposition of a conductive polymer by electropolymerization on at least one of said electrodes. The electropolymerization being carried out after the two electrodes and the separator have been positioned in said casing. Furthermore, the positive or negative electrodes comprise nano-objects selected from nanopowders, elongated nano-objects, nanofibers, nanotubes, carbon nanotubes, mats of vertically aligned carbon nanotubes, graphene and graphene derivatives.

Abstract: A method for preparing a cable formed of carbon nanotubes, comprising decomposing at least one carbon precursor compound and at least one precursor compound of a catalyst on a porous substrate (43), in which method continuously:—a first gas stream comprising a precursor of a catalyst is brought into contact with a porous substrate (43);—a second gas stream comprising at least one carbon precursor is brought into contact with said porous substrate (43);—said porous substrate (43) is heated to a temperature leading to the deposition of catalyst particles and the catalytic growth of a carbon nanotube bundle, and preferably between 500° C. and 1000° C.

Abstract: A method for preparing carbon nanotubes, nanofibres or nanofilaments by decomposition of at least one carbon precursor in the presence of a catalyst, in which method continuously:—a first gas stream comprising a precursor of a catalyst is brought into contact with a porous substrate (43);—a second gas stream comprising at least one carbon precursor is brought into contact with said porous substrate (43);—said porous substrate (43) is heated to a temperature leading to the deposition of catalyst particles and to the catalytic growth of carbon nanotubes.

Abstract: The invention concerns a method for growing oriented carbon nanotubes on a sample using a target of carbon or a variety of carbon in a deposition chamber where a plasma predominates. The sample (16) is arranged in contact with the target (15), in such a way that the target has a free surface and that the sample offers a free surface, the plasma causing the growth of carbon nanotubes on the free surface of the sample.

Abstract: A substrate configured to support at least one electronic or electromechanical component and one or more nano-elements, formed with a base support, with a catalytic system, with a barrier layer, and with a layer configured to receive the electronic or electromechanical component, in single-crystal Si or in Ge or in a mixture of these materials. The catalytic system lies on the base support without any contact with the layer configured to receive electronic or electromechanical component and the barrier layer is sandwiched between the catalytic system and the layer configured to receive the electronic or electromechanical component. This barrier layer is without any contact with the base support.

Abstract: A process for making nanostructures on a support, including: supplying a support including a surface layer on one of its faces, covering the surface layer by a catalyst layer structured according to a pattern exposing areas of the surface layer covered by the catalyst and areas of the surface layer not covered by the catalyst, etching the thickness of the surface layer in the areas not covered by the catalyst layer, and selectively growing nanostructures on the areas of the surface layer covered by the catalyst. The process can also be used to make cathode structures with electrically independent nanostructures.

Abstract: A process for making nanostructures on a support, including: supplying a support including a surface layer on one of its faces, covering the surface layer by a catalyst layer structured according to a pattern exposing areas of the surface layer covered by the catalyst and areas of the surface layer not covered by the catalyst, etching the thickness of the surface layer in the areas not covered by the catalyst layer, and selectively growing nanostructures on the areas of the surface layer covered by the catalyst. The process can also be used to make cathode structures with electrically independent nanostructures.

Abstract: The invention concerns a method for growing oriented carbon nanotubes on a sample using a target of carbon or a variety of carbon in a deposition chamber where a plasma predominates. The sample (16) is arranged in contact with the target (15), in such a way that the target has a free surface and that the sample offers a free surface, the plasma causing the growth of carbon nanotubes on the free surface of the sample.