Disclosed herein are a highly porous ceramic having a high porosity of not less than 60% and a pore density of not less than 108 pores/cm3 fabricated from expandable microspheres and a preceramic polymer, and a method for fabricating highly porous ceramic. The method for fabricating highly porous ceramic...http://www.google.ca/patents/US7033527?utm_source=gb-gplus-sharePatent US7033527 - Highly porous ceramics fabricated from preceramic polymer and expandable microspheres, and method for fabricating the same