Facile microcapsule fabrication by spray deposition of a supramolecular hydrogel

A peptide amphiphile dispersed in water induces the formation of a supramolecular hydrogel. By spraying this hydrogel onto a solid surface, its hierarchical fibril structure remained unchanged even after water evaporation. Interestingly, there were microcapsules on the substrate surface as a result of the process of spray-drying the hydrogel.