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Modern nanotechnology is an emerging and dynamic field. It is multidisciplinary in nature. It appears that Mother Nature was the first scientist offering nanoscale materials abundantly and they were used by the human beings from time immemorial. Several ancient practices have been developing nanoparticles through the traditional processes but these were not identified as nanosystems or nanoparticles. Ayurveda, the ancient traditional system of medicine in India, has described several “bhasmas,” which have particles with sizes in nano range and have been used traditionally.

Nanotechnology employs knowledge from the fields of physics, chemistry, biology, materials science, health sciences, and engineering. It has immense applications in almost all the fields of science and human life. As generally acknowledged, the modern nanotechnology originated in 1959 as a talk given by Richard Feynman,“There’s …