Khan 2025 Nanoparticles Definition. Nanoparticles exist in the natural world and are also created as a result of human activities. Nanoparticles are the particles of matters with the diameter usually ranging from 1 to 100 nanometres (nm), and possess distinctly different physicochemical properties, for example, colloidal properties, compared to that of microparticles or macroparticles (nahar and sarker,.

Nanotubes are very small and extremely. This lesson is an introduction to nanoparticles.