Nanotechnology and nanoparticles show promise in cancer diagnosis and treatment through targeted drug delivery. Nanoparticles are well-suited for these applications due to their small size, high surface area, and ability to control and target drug delivery. This can help reduce side effects while requiring lower dosages than traditional treatments. Many nanodevices like micelles, vesicles, dendritic polymers, and quantum dots are being developed and studied for use in drug delivery systems.