Patent ID: 8268640
Filing Date: 2012-09-18
Classification: H01L

Abstract:
1. A method for making a microstructure, the method including the steps of: providing a silicon substrate, the silicon substrate having a main surface, forming a porous silicon layer extending into the silicon substrate from the main surface, after forming the porous silicon layer, etching the porous silicon layer selectively to obtain a set of projecting microelements of porous silicon, each projecting microelement projecting from a remaining portion of the silicon substrate thereby exposing a corresponding external surface, and treating the projecting microelements to obtain a set of corresponding conductive or insulating microelements, each conductive or insulating microelement being obtained by converting at least a prevalent portion of the porous silicon of the corresponding projecting element into porous metal or ceramics, respectively, the porous metal or ceramics replacing the porous silicon extending toward the projecting element from the external surface.