One of the main problems on working with nanoparticles is their trend to form strong, difficult to break agglomerates. Different techniques of de-agglomeration based on the use of surfactant molecules covering the particles or on liquid medium dispersions have been followed to avoid these agglomerations. Nevertheless, in these cases a change of the nanoparticles can take place due to the interaction between them and the surrounding medium. Groups of the ICV-CSIC and IMM-CSIC collaborate to develop and patent dry, low energy dispersion methods that permit to control the final agglomeration state of nanoparticles. The process involves the use of electrostatic and van der Wall forces to effectively disperse nanoparticles. The dry process takes advantage of the natural trend of nanoparticles to agglomerate in order to anchoring and supporting on different substrates. Thus the dispersion of a certain amount of nanoparticles is produced in a variety of material from inorganic salts, synthetic or mineral ceramic powders, organic powders, semiconductor powders. The dispersion on substrates is also possible and
A wider variety of nanoparticles are validating to be used and disperse by this patented technology. Effective dispersion is afforded for spherical, fibrous or laminar nanoparticles with the requirement that almost one of its dimensions must be
Inventores: José F. Fernández, Israel Lorite, Fernando Rubio-Marcos, Juan Jose Romero, Miguel Angel García, Adrián Quesada, María Soledad Martín-González, Jose Luis Costa-Kramer.