Image stylisée présentant le procédé

So far, most of the methods or procedures used to generate such objects have need to break the symmetry by introducing an interface. This has the disadvantage of making difficult the preparation of large quantities of particles, since most of the techniques lead to a monolayer equivalent materials because particles changes take place in a two-dimensional reaction space.

Therefore, there is a growing need in the development of alternative methods replacing the two-dimensional approaches for real three-dimensional techniques, which allow extrapolation (in the sense of a change of scale) production of Janus particles at small scales (typically at the laboratory scale) to a large-scale like industrial production.

The subject invention aims at overcoming all or part of the disadvantages of the known methods to date for the implementation of a truly three-dimensional process with a high flexibility, which makes possible the formation of a large Janus particles range in terms of materials, size, shape and nature of the change. Thus, the method that has been developed allows the formation of Janus particles of micron or submicron size with a form isotropic or anisotropic, whose modified part has a specific shape.

This new production technique for asymmetrical particles allows:

                • Mass production of particles,
                • Increased manufacturing speed (few minutes),
                • Size control of particles (from the micronique to the submicronique), 
                • Moderate cost
                • Possible Scale-Up for the industry (three-dimensional technique)