Abstract: A method for interconnecting components of an electronic system includes depositing a sintering solution onto a first component to form an interconnection layer, the sintering solution comprising a solvent, metal nanoparticles dispersed in the solvent, and a stabilizing agent adsorbed onto the nanoparticles. More than 95.0%, preferably more than 99.0% of the mass of the nanoparticles include a metal selected from silver, gold, copper and alloys thereof and have a polyhedral shape with an aspect ratio greater than 0.8. The method also includes eliminating, at least partially, the solvent from the layer to form an ordered agglomerate in which the nanoparticles are regularly disposed in three axes, the stabilizing agent binding them together and maintaining at least a portion of the nanoparticles at a distance from each other, debinding and sintering the layer, and depositing a second component in contact with the layer before or during debinding or sintering.

Abstract: Method for interconnecting components of an electronic system comprising the steps of: a) depositing a sintering solution onto a first component in order to form an interconnection layer, the sintering solution comprising a solvent, metal nanoparticles dispersed in the solvent, and a stabilizing agent adsorbed onto the metal nanoparticles, more than 95.0%, preferably more than 99.0% of the mass of the metal nanoparticles comprising a metal selected from silver, gold, copper and alloys thereof and having a polyhedral shape with an aspect ratio of more than 0.

Abstract: The invention relates to aqueous dispersions, comprising particles based on a magnetic iron oxide with dimensions of ?20 nm, the surface of which is modified by the grafting of aminated groups R with a covalent bonding to the surface of said particles, wherein the isoelectronic point of particles with such a modified surface is ?10. The invention further relates to a method for production of said aqueous suspensions and a method for modification of the surface of the particles present in said dispersions, in particular, by the immobilisation of polysaccharides such as dextrans, particularly for the formulation of magnetic compositions which may be administered in vivo and in particular for the formulation of injectable compositions of contrast agents for MRI.

Abstract: The invention relates to nanometric or mesoscopic dissymmetric particles, and to a method for preparing the same. The particles have an inorganic part A and a spherical organic part B bound by physicochemical or covalent interactions. Material A is a metal oxide, a metal or a metal chalcogenide. Material B is a polymer consisting of recurrent units derived from a vinyl compound. The particles are obtained by modifying the surface of material A particles with a coupling agent C having a function FC which exhibits affinity for the polymer, and contacting the modified inorganic particles with the precursor(s) of the polymer B, in the presence of a free radical initiator and of a surfactant in solution in a solvent.

Abstract: A method for coating aluminum particles with a polymer film, includes the following steps: (A) providing an aqueous dispersion of metal aluminum particles using surfactants, the aluminum particles being contacted with S2O82? persulphate anions; then (B) providing an emulsion type polymerization in the aqueous dispersion thus obtained, by introducing into the dispersion monomers whereof the free radical polymerization is initiated by the persulphate anions, or by introducing into the emulsion monomers and an initiator for polymerizing the monomers, whereby a polymer film is formed on the surface of the aluminum particles. The invention also concerns pigment compositions based on aluminum particles coated with polymer films, obtainable by the method, as well as the use of the compositions for formulation of paints having a metallized appearance.

Abstract: The invention relates to unsymmetrical nanoscale or mesoscopic particles, and to a method for preparing the same. Said particles are characterized by a surface F1 and the zone Z2 carries groups F2 different from the groups F1, the zone Z1 being free of groups F2 and the zone Z2 being free of groups F1. The method of preparation comprises the following steps: 1) the zone Z2 of the surface of the initial particles is masked by fixing a polymer nodule thereto; 2) the masked particles obtained at the end of step 1) are treated in order to modify the nonmasked surface zone Z1 thereof; 3) the polymer nodule is removed after modifying the zone Z1; 4) optionally, the surface of the zone Z2 of the particles is modified following the demasking process.

Abstract: The invention relates to aqueous dispersions, comprising particles based on a magnetic iron oxide with dimensions of ?20 nm, the surface of which is modified by the grafting of aminated groups R with a covalent bonding to the surface of said particles, wherein the isoelectronic point of particles with such a modified surface is ?10. The invention further relates to a method for production of said aqueous suspensions and a method for modification of the surface of the particles present in said dispersions, in particular, by the immobilisation of polysaccharides such as dextrans, particularly for the formulation of magnetic compositions which may be administered in vivo and in particular for the formulation of injectable compositions of contrast agents for MRI.

Abstract: The invention relates to nanometric or mesoscopic dissymmetric particles, and to a method for preparing the same. The particles have an inorganic part A and a spherical organic part B bound by physicochemical or covalent interactions. Material A is a metal oxide, a metal or a metal chalcogenide. Material B is a polymer consisting of recurrent units derived from a vinyl compound. The particles are obtained by modifying the surface of material A particles with a coupling agent C having a function FC which exhibits affinity for the polymer, and contacting the modified inorganic particles with the precursor(s) of the polymer B, in the presence of a free radical initiator and of a surfactant in solution in a solvent.

Abstract: A pigment composition contains aluminium metal-based particles (p), the particles (p) including a surface oxidation layer having an average thickness of at least 5 nm. In addition, the aforementioned particles (p) are coated with a protective layer having hydrocarbon chains R which are linked to the surface of the particles (p) by [particle]-Al—O—Si—R linkages. The invention also relates to method of preparing the inventive pigment compositions as well as the use thereof, in particular, for the formulation of water-based metallic paints.