Porous material and method for producing the same

A method of forming a composite material comprising:

• (a) forming a first lattice construction from a first plurality of solid particles, said construction being formed so as to have one or more gaps between the first particles, said gaps being at least partially filled with a first fluid material;
• (b) controlledly displacing the first fluid material with an invading fluid material such that the extent of penetration of the invading fluid material into the first lattice construction is controlled;
• (c) at least partially solidifying the invading fluid material which penetrated the gaps in the first lattice construction to form a composite material;
• (d) removing at least a portion of the solid particles from the composite material, thereby forming at the location of the removed portion one or more pores in the solidified invading material;
• (e) forming a second lattice construction from a plurality of solid particles, said second construction being formed so as to have one or more gaps between the second particles;
• (f) invading the second lattice construction with the invading fluid material such that the invading fluid material at least partially penetrates the gaps in the second lattice construction;
• and,
• (g) at least partially solidifying the invading material which invaded the second lattice construction,
• wherein step (b) includes forcing the invading fluid material into the one or more gaps between the particles of the first lattice construction,
• wherein the invading fluid material is squeezed between the first and second lattice constructions,
• wherein the first and second lattice constructions meet one another so that no extra invading fluid material is left un-penetrated.