| abstract |
We describe a method of manufacturing a ceramic filter having a controlled filter channel opening size, the method comprising: fabricating a ceramic precursor element, said precursor element having a structure comprising first and second surfaces and an arrangement of flared pores extending between said first and second surfaces, wherein an apex of a said flared pore is towards said first surface and a base of said flared pore is towards said second surface and is larger than said apex, wherein said flared pore contains polymer material and regions between said flared pores comprise ceramic material; and sintering said ceramic precursor element to fuse said ceramic material and remove said polymer material; the method further comprising removing a controlled thickness portion of said first surface to open said flared pores to said controlled filter channel opening size. |