Patent ID: 8728585
Filing Date: 2014-05-20
Classification: C23C,C23F

Abstract:
1. A method for enhancing adhesion of a thin film, said method comprising: irradiating a surface of a parent material with a laser beam polarized in one predetermined direction at a fluence (energy density) close to a processing threshold; performing a scan with the laser beam on the surface of the parent material with an overlap such that the total number of shots of the laser beam irradiated on the same position of the surface of the parent material is within a range of 10 to 300, so as to cause ablation on the surface of the parent material at a region where interference occurs between a polarization light component of a surface scattered light traveling along the surface of the parent material, and thereby to form a grating structure spontaneously on the surface of the parent material in one predetermined direction orthogonal to a polarization direction of the incident light of the laser beam; and forming a solid thin film on the grating structure of the surface of the parent material.