A method for preparation of liquid, semi-liquid or solid particles through formation of an initial emulsion and consecutive deformation and/or breakage of the particles by means of temperature change. The formed particles may further be polymerized, physically or chemically modified and/or functionalized. The shape and size of the particles depend on the oil used, the size of the emulsion droplets in the initial emulsion, the surfactant used and the cooling/heating rate or temperature, and finally the nature of the additives. The method allows the preparation of a diverse range of particle shapes: rod-like, with different aspect ratios (1a, 1b) triangular (1c) triangular with inscribed geometrical shapes (d) deformed and/or elongated triangular shapes (e, f) quadrilateral shapes (g, h) quadrilateral shapes with inscribed geometrical shapes (i) hexagonal (j) hexagonal with inscribed geometrical shapes (k, l) and/or polygonal shape (m).