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A wrinkling-assisted strategy for controlled interface delamination in mechanically-guided 3D assembly by Yumeng Shuai; Jianzhong Zhao; Renheng Bo; Yu Lan; Zengyao Lv; Yihui Zhang is a Engineering article available to read on EtoBox.

What is A wrinkling-assisted strategy for controlled interface delamination in mechanically-guided 3D assembly about?

Mechanically-guided three-dimensional (3D) assembly is a recently established method for the fabrication of 3D structures and devices at micro/nanoscale. Such assembly methods typically involve a process of compressive buckling in a patterned high-modulus thin film integrated with a low-modulus elastomer substrate at selective regions. A successful assembly requires, simultaneously, a sufficiently strong interface in selective regions to stay undelaminated, and a sufficiently weak interface in remaining regions to be fully separated. However, such requirements are very challenging to meet for highly flexible 3D mesostructures or those with large-area suspended features. Here, we propose a wrinkling-assisted strategy to substantially facilitate the delamination at desired regions of the film/substrate system. An additional assisting layer is introduced such that a weaker film/assisting-layer interface replaces the original film/substrate interface, and the wrinkles formed in the assisting layer induce additional driving forces to separate the film/assisting-layer interface. An analytical model is developed to capture the delamination of the thin film from the wrinkled assisting laye

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Author

Yumeng Shuai; Jianzhong Zhao; Renheng Bo; Yu Lan; Zengyao Lv; Yihui Zhang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)