Patent ID: 7282259

Claim:
A ceramic structure comprising: (a) a scaffold comprising at least one opening; and (b) at least two porous ceramic fillers at least partially filling the at least one opening, wherein each of the at least two porous ceramic fillers comprises a plurality of pores having both a pore architecture and a wall composition, wherein either or both of the pore architectures and the wall compositions differ between two of the at least two porous ceramic fillers; wherein the pores have an average size in a range from about 2 nm to about 100 nm; and wherein for each pore architecture, the average pore size does not vary by more than about 100% when the average pore size is in a range from about 2 nm to about 50 nm, and the average pore size does not vary by more than about 50% when the average pore size is greater than about 50 nm.