Application No./Patent No.: 2018104646764 Application date: May 15, 2018.
Inventor/Designer: Pan Qiaofei, Cao Yu, Xue Wei, Yang Huan, Zhu Dehua, Qu Jianwu, Liu Wenwen and Zhang Jian.
The invention provides a method for preparing the surface of a dry bonding structure by directly etching metal by laser, which comprises the following steps: preparing a metal sheet and a metal foil, and designing and arranging a plurality of bristles on a metal substrate in a lattice arrangement manner in imitation of a gecko bristle structure; Preparing superhydrophobic microstructures on the surfaces of metal substrates and metal foils respectively; The metal foil is attached and fixed on the surface of the metal substrate, and the metal foil and the metal substrate are anchor-welded according to the artificial metal bristle lattice by adopting a laser fine spot welding process, and the metal foil is subjected to artificial metal bristle contour cutting according to the artificial metal bristle contour pattern of the artificial metal rigid lattice by adopting a pulse laser fine etching process to form a cluster-like artificial metal bristle array. The structure prepared by the invention is micro-nano-scale cluster-like artificial metal bristles which are arranged in any pattern lattice and warp in the horizontal direction at a certain inclination angle, and the metal surface based on the structure can realize high adhesion, easy desorption, self-cleaning and super-hydrophobic performance.
