Nanotechnology is bigger and more powerful than the field of chemistry, it focuses on more than just chemical composition.
Nanotechnology explores how diverse very tiny molecular structures and particles of different sizes and shapes interact with each other in nature. The field of nanotechnology has more applications than the field of chemistry, because the size and shape of these tiny structures makes a big difference in how they work.
Nanoparticles can be designed and built for almost any purpose. In biology, the scope of applications for nanotechnology is truly enormous. All forms of life interact with the naturally occurring nanoparticles found all around us.