These materials usually are not aerogels, on the other hand, because they do not Possess a monolithic internal structure and would not have the regular pore structure attribute of aerogels. In 1931, to produce the primary aerogels, Kistler utilised a approach called supercritical drying which avoids a direct section transform.[39] https://www.facebook.com/NewTechFind/posts/pfbid02pgo4fYushAHWHhzFHRhtxfnDij4UmazvKhJbpXPP8SQkC63EirdRmSH6huhFSuwnl