Figure 1: Particulate-leaching techniques materials and methods. The process is easy to carry out: NaCl crystals were used to create the pores, and the grinding (A) and sieving (B and C) of sodium chloride resulted in uniform particulates. A PCL, THF solution was casted into the salt-filled glass mold and after the evaporation of the solvent; the salt crystals are leached away using distilled hot water (D).