Silver nanoparticles modified nanocapsules for ultrasonically activated drug delivery

► Polyelectrolyte nanocapsules containing silver nanoparticles have been fabricated. ► Drug encapsulation using nanocapsules was successfully carried out. ► Due to presence of silver nanoparticles, capsules could ruptured by sonication. ► Release of model drug was rapid and efficient under sonication with nanocapsules. ► An efficient drug delivery system for remote release has been demonstrated.