![]() ![]() In the present paper, a three-step procedure is proposed to design micro-/nano-textures for the surface decoration of products, to apply tailored textures onto the surface of nitrided punch for micro-embossing and for micro-piercing, respectively, and to imprint them onto product surfaces. In addition to this direct printing of nano-structured patterns by stamping, there are many ways to imprint tailored nano-textures onto selective surface areas during metal forming. As surveyed in, this nano-texturing process is useful to fabricate nano-textured punches and dies for the transcription of the surface nanostructure onto metal, polymer, and oxide-glass products by fine stamping. Hence, the femtosecond laser nano-texturing becomes a key technology to modify and control the physical and chemical properties of various material surfaces in practice. ![]() In addition to this surface property control, optical properties were also tuned by femtosecond laser irradiation. Through micro-/nano-texturing by femtosecond laser processing, the original hydrophilic surfaces of AISI304 substrates were controlled to be super-hydrophobic for example, the static contact angle increased to 170.4°, nearly equal to the ideal angle by theoretical estimate. ![]() Among its several features, LIPSS (laser-induced periodic surface structuring) has attracted many researchers since its initial discovery. In the latter, a mother punch works as a tailored tool to transform a perfect shearing process design onto highly qualified product surfaces with use of the nano-texturing method, as shown in Figure 1b.įemtosecond laser processing is commonly employed as tooling to perform the laser printing of micro-/nano-textures onto mother dies. ( a) Micro-/nano-patterns → Laser-printed die → Micro-/nano-textured product, and ( b) nano-patterns → Laser-machined die → Highly qualified product surface. Two data transformation procedures from the design base to the final product by imprinting mother die textures. ![]()
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