Patent ID: 8511483

Claim:
An apparatus comprising: a first layer having a thickness between about 100 nm to about 1 μm, the first layer including a plurality of first pores having a first diameter between 2 nm and about 50 nm, wherein the plurality of first pores permit fluid and/or molecules having a diameter smaller than the first diameter to pass through the first layer, wherein the first layer includes a first portion that includes the first pores, and wherein the first portion is formed of Mobile Crystalline Material (MCM)-41 or Santa Barbara Amorphous-15 SBA-15), and wherein the first layer further includes a plurality of second portions forming pillars penetrating the first layer, the second portions being non-porous; and a second layer attached to the first layer, the second layer including one or more second pores having a second diameter greater than the first diameter, wherein the one or more second pores are aligned to permit the fluid and/or molecules to pass from the first layer through the second layer.