This question supports and is linked to a fortified essay on the future of nanotechnology by Physical Chemist Kevin Ausman. Click here to read the full essay. There is a related question, whether nanoparticle-enabled cancer therapy will be approved by 2031, here.
Inorganic nanoparticles are small collections of a few thousand to a few billion atoms, typically ranging from 1 to 100 nm in diameter. They have many peculiar chemical and physical properties, which make them attractive for designing therapies.
An example of such technology is called Aurolase Therapy, and has been in development for two decades. It's now in pilot studies in humans with early results giving reason for optimism.