Aerogel particles having a mean particle size less than 1 micron, products
containing the same, processes of making the same, and uses thereof are
described. A process of making the particle is also described wherein
starting aerogel particles are homogenized or wet milled. The starting
aerogel particles can be surface treated during the milling process to
prevent agglomeration or aggregation. The aerogel particles can be used
in a variety of products and applications.