We observed that the polydispersity of the capsules obtained by spontaneous Rayleigh-Plateau instability mostly originated from the coalescence between composite droplets during free fall. We are now exploring how the application of an electric field combined with a piezoelectric-assisted mechanical stimulus may force the instability and generate monodisperse polymer capsules. Of practical importance for biological and cell therapy applications, this phenomenon is also investigated in depth from a fundamental viewpoint.

References :

• L. Suire, A. Jana, P. Nassoy, A. Badon (2025). Extending the range of sizes of monodisperse core-shell hydrogel capsules from composite jet breakup by combined electrical and mechanical actuation,  https://arxiv.org/pdf/2503.21333

People involved in the project