The science
Surface area and particle size
Nanoparticles can do things ordinary materials can't. Their power comes from scale: a very small size and a very high surface area-to-volume ratio.
Scale
One million times smaller than a wheat seed
Imagine a single wheat seed cut into one million blocks. The total surface area increases massively, giving far more area for reactions and interactions.
1,000,000×
Smaller than a wheat seed
A nanoparticle is about one million times smaller than a wheat seed.
High surface area-to-volume ratio
Cutting material into tiny pieces greatly increases the total surface area, giving more area for reactions and interactions.
Useful in small amounts
That is why nanoparticles are so useful, even in small amounts.
Porous structure
Ready to carry active substances
Porous nanoparticles are ready to encapsulate active substances.
Next
Encapsulation and protection
How nanoparticles hold and shield active ingredients.