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Dynamic laser prototyping for biomimetic nanofabrication
Authors:Dong‐Xu Liu  Yun‐Lu Sun  Wen‐Fei Dong  Rui‐Zhu Yang  Qi‐Dai Chen  Hong‐Bo Sun
Abstract:Micronanofabrication technologies developed so far pursue faithful conversion from digital models to matter structures. This is vital for microdevices in optics, mechanics, and electronics, where device shape and size matter. However, biotissues grow under rich environmental factor interactions, as demands novel manufacturing approaches for biomimetic and biological fabrication. Here, a concept of dynamic laser prototyping is reported, which is based on a new finding of a multilayered three‐dimensional (3D) wrinkling phenomenon. The 3D wrinkling started with formation of a photocrosslinked hydrogel sheet by femtosecond laser direct writing. It was followed by spontaneous self‐bending of the sheet, caused by a purposely designed sheet–substrate stress mismatch. The flower blooming process has been successfully mimicked, indicating broader usages of the technology in biotissue‐growth‐related manufacturing.
Keywords:Laser prototyping  femtosecond laser  nanofabrication  lamellate growth  surface wrinkling
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