Centre National De La Recherche Scientifique

Ecole Polytechnique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Ecole Polytechnique Dgar

Centre National De La Recherche Scientifique-cnrs

Jean-Eric Wegrowe

Travis Wade

Didier Pribat

Emmanuel Balanzat

Marie-Claude Clochard

Melilli Giuseppe

Eric Giglio

Didier Lairez

Travis Lee Wade

The invention relates to a process for fabricating a piezoelectric nanogenerator, to a piezoelectric nanogenerator obtained by this process and to a device including such a piezoelectric nanogenerator connected to a capacitor, said process comprising the following steps: a) providing a membrane () made of polarised &#x3b2;-PVDF or polarised P(VDF-TrFe) copolymer and therefore having piezoelectric properties, said membrane () moreover having two external major faces () that are separated by a membrane thickness (e); b) irradiating the entirety of the thickness of said membrane (), via at least one of its two external major faces (), with heavy ions having a fluence of between 103 ions/cm2 and 1010 ions/cm2, as a result of which a membrane () containing latent traces (TL) of the passage of the heavy ions through the entirety of its thickness is obtained; c) revealing the latent traces (TL) using a chemical process of length that is preset so as to preserve a defect zone (ZD) belonging to the latent trace, as a result of which a nanostructured membrane is obtained having nanopores including, around each nanopore, a defect zone (ZD); d) depositing a layer of an electrical conductor on one () of the two external major faces () of said membrane; e) electrodepositing an electrical conductor or semiconductor in the nanopores, the electrodeposition being stopped before the nanopores have been completely filled, as a result of which a nanostructured membrane is obtained having nanowires () partially filling the nanopores; and f) depositing a layer, of an electrical conductor, on the other () of the two external major faces () and which therefore does not make contact with the nanowires.

Process for fabricating a piezoelectric nanogenerator, piezoelectric nanogenerator obtained by this process and device including such a piezoelectric nanogenerator

A method of synthesizing electronic components incorporating nanoscale filamentary structures in which method a metallic catalyst is deposited in a nanoporous membrane , the catalyst being adapted to penetrate in at least some of the pores of the nanoporous membrane , and filamentary structures are grown on the catalyst in at least some of the pores in the nanoporous membrane . The nanoporous membrane is prepared in a manner suitable for ensuring that the wall of the pores include a single-crystal zone, and at least part of the catalyst is grown epitaxially on said single-crystal zone.

Method of synthesizing nanoscale filamentary structures, and electronic components comprising such structures

The invention relates to a method for producing electronic components consisting in carrying out a first anodization of a carrier material () for forming at least one first pore () extending in a first direction in said carrier material () and in carrying out a second anodization for forming at least one second pore () extending in the carrier material () in a second direction different from the first direction.

Process for fabricating electronic components and electronic components obtained by this process

Growing community of inventors

Verrieres-le-Buisson, France

Jean-Eric Wegrowe