The functionality of smart nanocarriers relies on their ability to navigate the biological environment and release drugs at the desired site. These nanocarriers are often composed of liposomes, polymeric nanoparticles, dendrimers, or metallic nanoparticles. They can be engineered to recognize specific cells or tissues through surface modifications with ligands or antibodies. Once they reach the target site, the external or internal stimuli trigger the release of the encapsulated drug.
