Method of surface treatment of bone materials by laser and nanostructure thereof

A method of surface treatment of bone materials by laser, comprising:

• forming molten metallic titanium by continuously ablating a surface of titanium metal of a bone material by irradiating laser at fixed points in a straight axis forward direction along a surface of the titanium metal of the bone material, forming titanium dioxide (TiO2) during cooling, forming at least one microchannel in the straight axis forward direction by performing molten sputtering on the molten titanium metal, wherein the at least one continuous micro-hole is formed at a bottom side of the at least one microchannel by performing molten sputtering at the surface of the molten titanium metal using the laser, at least one nano-wall of the at least one microchannel is formed at a longitudinal axis side of the at least one microchannel by continuously performing molten sputtering at the at least one micro-hole along the straight axis forward direction using the laser and then performing molten sputtering around the at least one micro-hole to sputter the molten titanium metal onto the surface of the titanium metal;
• forming at least one guiding channel of the at least one microchannel by performing molten sputtering in between the at least one nano-wall in a direction perpendicular to the irradiated straight axis forward direction of the laser, wherein the guiding channel between the adjacent at least one nano-wall has a first width and a thickness of the nano-wall between the paralleled adjacent at least one guide channel has a pitch;
• forming a first height of the at least one microchannel by irradiating the laser on the surface of the titanium metal of the bone material along a longitudinal axis direction perpendicular to the irradiated straight axis forward direction, wherein the first height comprises a second height of the at least one nano-wall, and a third height of a depth of the micro-hole;
• forming at least one nano-bump layer with clustered nano-bumps on an upper end surface of at least one nano-wall by irradiating the laser on the surface of the titanium metal to perform molten sputtering subject to the surface of the titanium metal;
• and forming at least one wall bottom layer at a lower end surface of the at least one nano-wall by irradiating the surface of the titanium metal to perform molten sputtering subject to the surface of the titanium metal by the laser;
• wherein, a change in roughness is formed by performing molten sputtering by irradiating the laser on the surface of the titanium metal, a roughness of the at least one nano-bump layer is greater than a roughness formed by the at least one wall bottom layer of the bottom side of the adjacent guiding channel;
• wherein, the micro-holes are provided to activate stem cells into osteoblasts, and the osteoblasts form at least one Z-shaped mesh attaching object, which quickly climbs the nano-bump layers between the at least one adjacent nano-wall of the at least one guiding channel.