A method for fabricating superhydrophobic antireflection structures on irregular metal surfaces

Abstract

The invention provides a method for preparing a super-hydrophobic anti-reflection structure on an irregular metal curved surface in rapid, large-area and remote modes, and belongs to the technical field of preparation of multifunctional materials. A method combining femtosecond laser filament processing and chemical fluorination treatment is adopted to realize rapid large-area remote preparation of a multifunctional surface on the surface of an irregular metal curved surface sample, such as stainless steel and titanium alloy, the continuous scanning through femtosecond laser filaments on the sample is realized through programmed control on the motion track of a three-dimensional displacement platform, then chemical fluorination treatment is carried out on the sample, and finally the preparation of the multifunctional surface with the anti-reflection property and the super-hydrophobic property on the surface of the irregular metal curved surface sample, such as the stainless steel and the titanium alloy, is realized. According to the multifunctional surface, the reflectivity of is not higher than 10% in the spectral range from ultraviolet to near infrared, and the water contact angle can be up to 150 degrees or above.

Description

technical field [0001] The invention belongs to the technical field of preparation of multifunctional materials, and in particular relates to a method for rapidly and large-area remote preparation of a superhydrophobic anti-reflection structure on an irregular metal curved surface. Background technique [0002] In recent years, environmental problems have seriously affected economic development and people's production and life. In order to solve environmental problems, the preparation of new materials and the modification of material properties have become an important way to solve this problem. Inspired by biological multifunctional surfaces in nature, it has been found that imitating the microstructure of biological surfaces can better improve the material properties of the surface. The femtosecond laser has the advantages of no pollution, strong maneuverability and low cost, because it is widely used on the surface of materials to induce microstructures and improve the c...

AI Technical Summary

Problems solved by technology

However, the preparation of microstructured surfaces by femtosecond laser has its own disadvantages. On the one hand, this near-field tight focusing method needs to focus the focus point on the sample surface, so femtosecond laser microstructured surfaces are only limited to planar samples. Surface sample preparation requires complex control of the sample

On the other hand, since the focal point of the femtosecond laser focus is on the order of microns, it is impossible to achieve remote and rapid preparation of large-area samples.

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