Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Schematic diagram to demonstrate the effect of smaller particle size on the surface area to volume ratio. Once subject was manufactured into smaller ones, the total surface area will be significant larger than original one. Therefore, the ratio of surface to volume will also be increased
