TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The sintered product is manufactured by method comprising (a) preparing a slurry comprising (i) 4-50 vol.% of ceramic particles suspended in a liquid phase, (ii) more than 1 vol.% of a first particle fraction comprising orientable anisotropic particles having an average length L50, and (iii) 1-80 vol.% of a second particle fraction having a diameter D50 of at least ten times smaller than the average length compared to L50, where the first and second particle fraction together comprise more than 80 vol.% of the total amount of ceramic particles, (b) optionally pouring the slurry into a mold and/or removing air bubbles contained in the slurry, (c) directional freezing the slurry by movement of a solidification front to form frozen slurry blocks, where the speed Vp of the solidification front is less than the encapsulation rate Vc of the ceramic particles and Vc is adapted to form crystals of the solidified liquid phase, and the walls have an average thickness, which is greater or equal to the average thickness of the adjustable ceramic particles W150, (d) optionally removing the mold blocks, (e) removing the solidified crystals of the liquid phase of the mold block, by sublimation, to obtain a macroporous preform, (f) optionally debinding the macroporous preform, (g) optionally sintering the macro porous preform to obtain a sintered product, and (h) optionally, processing and/or impregnating the sintered product, where the ceramic particles can be partially or completely replaced by equivalent amounts of precursors and converted into ceramic particles, and before the step (c), the total quantity of ceramic particles present and/or the ceramic particles partially or completely replaced by equivalent amounts of particles with the same form of a ceramic precursor can be replaced, and in the step (f) or (g) the ceramic particles are transformed into ceramics. The method comprises the step (g), where the total amount of ceramic particles is less than 80 vol.% of orientable ceramic particles, preferably anisotropic particles. The conditions of step (c) are adapted such that crystals of the solidified liquid phase are formed, where the crystals comprising a middle cross sectional plane have a width of more than 5 times, preferably more than 20 times larger than the thickness of the solidified liquid crystal phase. The method comprises compressing the block into a thickness, in a direction parallel to the crystals of the solidified liquid, to obtain a block having a relative density of 85%. The compression step is performed before and/or together with the step (f). The step (g) is preferably carried out by a pressure sintering or spark plasma sintering method. The step (c) does not comprises germination of the crystals of the solidified liquid phase along a line, and does not comprises the succession of a nucleation of crystals of the solidified liquid phase along a line and a growth of the crystals by epitaxy. Preferred Components: The product comprises more than 70% of ceramic grains. The walls have an open porosity of less than 30%, and comprise one or more surface layers of orientable ceramic grains. The dispersion of the orientation of the grain boundaries is less than 30 degrees , preferably less than 15 degrees . The frustum-shaped pores, viewed from a central cross section, preferably a flattened cross section, comprise more than 80% of the number of grains of a flat (preferably stacked flat) extending between two adjacent pores of extending wall portion. The orientable ceramic particles comprise a material with an oriented function. The first particle fraction is more than 50 vol.%, more than 80 vol.% or 5-50 vol.% of the ceramic particles, or less than 15 vol.% of the ceramic particles. The first particle fraction has an average elongation factor Rm of 10. The second particle fraction is more than 3 vol.% (preferably 7-20 vol.%) of the total amount of ceramic particles. The total amount of the ceramic particles is more than 80 vol.% (preferably more than 90 vol.%) of ceramic particles comprising the total amount of orientable ceramic particles. More than 90 vol.%, preferably more than 95%, of the particles of the second particle fraction is not aligned. The dense product has a thickness of 50 mu m. The particle size distribution of the ceramic particles is bimodal, where the first mode and second mode correspond to the first particle fraction and second particle fraction, respectively. The particles of the first particle fraction of a material have a registered function exist. The particles are anisotropic orientable particles or multi-faceted particles having more than two facets. More than 50 vol.% of the orientable particles belongs to a same class of the mentioned particles. The orientable ceramic particles, preferably anisotropic ceramic particles, and/or the ceramic particles of the second particle fraction and/or the particles of the anisotropic orientable particles or particles of complementary portion comprise a substance comprising oxides, nitrides, carbides, carbon oxynitrides, graphite and/or graphene. More than 50% of the crystals of the solidified liquid phase are substantially parallel to each other. The slurry is static. The substance comprises: e.g. zirconium oxide (ZrO2); partially stabilized zirconia; yttria (Y2O3); doped yttrium oxide, preferably samarium doped yttrium oxide; titanium oxide (TiO3); aluminosilicates such as mullite or cordierite (Al3Mg2AlSi5O18), alumina (Al2O3), aluminum hydroxides or boehmite; preferably magnesium oxide; talc (magnesium silicate hydroxide (Mg3Si4O10(OH)2)); nickel oxide iron oxides (FeO, Fe2O3 or Fe3O4); cerium oxide; doped cerium oxide; oxides having a perovskite structure, preferably gallates; compounds comprising lanthanum aluminate (LaAlO3), gallium oxide lanthanum (LaGaO3), lanthanum compound of formula (La(1-x)SrxMO3) doped with platinum, palladium, rhodium, gold and/or silver oxides with a perovskite structure, or lanthanum compound of formula (La(1-x)SrxM(1-y)M1ayO3); compounds comprising titanium compounds of formula (La4Sr8Ti11Mn1-xGaxO38) or (La4Sr8Ti12-nMnO38); barium titanate (BaTiO3), barium zirconate (BaZrO3); lead magnesium niobium oxide ((1-x)(Pb(Mg(1/3)Nb(2/3))O3)-x(PbTiO3)); lead magnesium niobium oxide (Pb(Mg(0.25)Nb(0.75)O3)); barium zinc niobium oxide (Ba(Zn(0.25)Nb(0.75)O3)); lead zinc niobium oxide (Pb(Zn(0.25)Nb(0.75)O3)); lead titanium oxide (PbTiO3); calcium cuprum titanium oxide (CaCu3Ti4O12); compounds having a BIMEVOX structure of formula (Bi2V1-xMexOz); hematite; aluminum nitride; boron nitride, preferably hexagonal boron nitride, silicon nitride, titanium nitride or titanium carbide; silicon carbide; tungsten carbide; zirconium carbide; graphite and/or graphene.M = chromium, cobalt, magnesium, iron, gadolinium and/or manganese;M1a = platinum, palladium, rhodium, gold and/or silver;Me = magnesium, aluminum, silicon, titanium, cobalt, nickel, copper, zinc, manganese, antimony, tantalum, niobium, chromium, molybdenum, tungsten and/or uranium;x, n = 0-1; andy = 0-0.15.