What is Sol-Gel?
The term sol-gel (say “sahl-jell”) refers to a process in which solid nanoparticles dispersed in a liquid (a sol) agglomerate together to form a continuous three-dimensional network extending throughout the liquid (a gel). The term sol-gel is sometimes used as a noun to refer to gels made through the sol-gel process, but this is somewhat of an abuse of the term, since pretty much all gels are made through the sol-gel process.
