Method to improve the mechanical properties of nano materials, micromaterials and short fibers by indirect exposure to laser irradiations. The method was done by dipping powder materials in transparent plastics to allow the passage of a laser beam through it without being absorbed or interact with transparent material. The laser affect the structure of powder and improve properties, After exposure organic solvent is used to dissociate the transparent plastics , the treated nanomaterials or short fibers were collected. The method is a physical process free of pollutants and exhaust, it do not cause economic losses in the amount of material treated.