Two-stage wrinkling of Al films deposited on polymer substrates. (15th March 2019)

• Record Type: Journal Article
• Authors: Wu, K.; Yuan, H.Z.; Li, S.J.; Zhang, J.Y.; Liu, G.; Sun, J.
• Is Part Of: Scripta materialia. Number 162(2019)
• Page Start: 456
• Page End: 459
• Publication Date: 2019-03-15
• Subjects: Thin films -- Wrinkling -- Hierarchical structures; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.12.016
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: This study reveals two-stage wrinkling behavior of Al films deposited on polydimethylsiloxane (PDMS) substrates by magnetron sputtering at a high temperature. The hierarchical structures with nano-micro dual scale wrinkles were created in Al films. The micro-scale wrinkles originated from thermal contraction, with the wavelength increasing with increasing film thickness, while nano-scale wrinkles, with an almost unchanged wavelength, are induced by the expansion of the mixed layer on the PDMS surface. The results provide a facile method to produce the hierarchical wrinkled surfaces for functionality. Graphical abstract: Unlabelled Image