Metallization of microscale wrinkles on a curved surface by contact and electro-replication method

Metallization of microscale wrinkles on a curved surface by contact and electro-replication method We suggest a novel experimental technique to fabricate microscale metallic wrinkles on a curved surface to clear duplication of form using a contact and electro-replication process. As the first step, in order to fabricate polymeric master wrinkle patterns, a UV-curable adhesive was deposited on a substrate with 180 μm in thickness, and then it was weakly polymerized by short UV exposure of 5 s for generating the gradient of material properties along the direction of layer thickness. Then, wrinkles were generated on a skin of the weakly polymerized layer by compressive forces that occurred during a thermal post-processing. After that, the master was replicated using a PDMS mold. The metallic wrinkles were reproduced on a curved metallic surface using the replicated mold in a nickel-based electroforming system. For understanding the major process parameters of electro-replication, a Taguchi method was utilized. Through this work, the metallic wrinkles were well reproduced and we believe that the proposed method is a promising technology to fabricate metallic wrinkles that have rich potential applications such as heat transfer enhancement and surface modification of metallic structures. The International Journal of Advanced Manufacturing Technology Springer Journals

Metallization of microscale wrinkles on a curved surface by contact and electro-replication method

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Springer London
Copyright © 2017 by Springer-Verlag London
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
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