Harnessing localized ridges for high-aspect-ratio hierarchical patterns with dynamic tunability and multifunctionality

Changyong Cao, Hon Fai Chan, Jianfeng Zang, Kam W. Leong, Xuanhe Zhao*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    170 Citations (Scopus)

    Abstract

    A simple method for fabricating high-aspect-ratio, hierarchical, and dynamically tunable surface patterns is invented by harnessing localized-ridge instabilities in gold nanofilms coated on elastomer substrates (a); a theoretical model to calculate the critical parameters (e.g., wavelength and amplitude) for designing the new patterns is developed (b); and novel applications of the patterns as super-hydrophobic coatings (c) and biomimetic cell-culture substrates (d) capable of on-demand tunability are demonstrated.

    Original languageEnglish
    Pages (from-to)1763-1770
    Number of pages8
    JournalAdvanced Materials
    Volume26
    Issue number11
    DOIs
    Publication statusPublished - 19 Mar 2014

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