in sol-gel processing
sedimentation of a solid material (a precipitate) from a liquid solution in which the material is present in amounts greater than its solubility in the liquid.
When @P04795@ occurs in @S05727@-@G02600@ processing, @S05727@ particles have aggregated to a size where gravitational forces cause them to sink or float. Generally, aggregation arises from a change in the @S05727@ that reduces the interparticle repulsion.
PAC, 2007, 79, 1801. 'Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)' on page 1824 (