Abstract: A method for producing a permanent or soft magnet including the following steps: a) providing: a solution containing a solvent in which are dispersed a set of objects which possess a permanent magnetic moment; a substrate on which are fixed to the surface or within a cavity that it may have, a 1st pad and a 2nd pad, said 1st pad includes a face facing and parallel to a face that the 2nd pad includes; b) the solution is deposited on the surface of the substrate or, as the case may be, within its cavity; c) the substrate is placed in a magnetic field so that the set of objects are grouped together between the face of the 1st pad and the face of the 2nd pad so as to form a permanent magnet.

Abstract: A process for controlling the wettability of a silicon-containing substrate including forming a polymer coating over at least one surface region of the silicon substrate, the wettability of which is to be controlled; inducing a controlled roughness on the at least one surface region by over-etching the polymer coating using a fluorinated plasma; subjecting the at least one surface region to a surface energy modifying treatment.