Brief Description: The disclosed subject matter provides systems and methods for delivering a therapeutic agent for targeted treatments. The system can include at least one microcapsule and a magnetic system. The microcapsule can include the therapeutic agent and a layer of iron oxide nanoparticles (IONPs). The therapeutic agent can be encapsulated by the layer of the IONPs that include a first type of nanoparticles and a second type of nanoparticles. The magnetic system can be configured to generate a magnetic field to control the motion of the microcapsule as well as to assemble into multi-capsule structure and control its motion. Assemblies of multiple microcapsules can be controlled simultaneously and directed to targeted areas for delivery of larger therapeutic payload. Intellectual Property Title: Intellectual Property: Intellectual Property: US2024-0382410A1 Docket Number: Docket#: 23-10442 Reference Media Title: Reference Media: