NANOTECHNOLOGY is the science of building products at the molecular level to affect the properties of matter to gain access to various affects:

SMART: Nanotech can be used to automate functions and intelligence of material.

ELECTRICAL: Nanotech can be used to manipulate electrical properties.

OPTICAL: Nanotech is used to affect the properties of light.

MECHANICAL: Nanotech can reinforce materials, improve tensile strength and dimension stability.

CHEMICAL: Nanotech can change the chemical reactivity of a material and improve its chemical resistance.