[It is] established that homeopathic medicines may work on the principle of nanotechnology.

Scientists from the Indian Institute of Technology-Bombay (IIT-B) have established that homeopathic medicines may work on the principle of nanotechnology.

Homeopathy is controversial because medicines in high potencies such as 30c and 200c involve huge dilution factors (1060 and 10400 respectively) which are many orders of magnitude greater than Avogadro’s number, so that theoretically there should be no measurable molecular remnants of the starting materials. Using market samples of metal-derived medicines from reputable manufacturers, scientists at IIT_B have demonstrated for the first time by Transmission Electron Microscopy (TEM), electron diffraction and chemical analysis by Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES), the presence of physical entities in these extreme dilutions, in the form of nanoparticles of the starting metals and their aggregates.
Reference Homeopathy Volume 99, Issue 4, October 2010, Pages 231-242