Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 37, 2012
Previous Article Next Article

Crack-free controlled wrinkling of a bilayer film with a gradient interface

Author affiliations

Abstract

We report a crack-free controlled wrinkling method based on a bilayer film system. A liquid UV-curable film is solidified on a uniaxially pre-stretched PDMS elastic sheet by UV-exposure. Subsequently, the sheet is released back to its initial non-stretched state, which results in spontaneous formation of grating wrinkles perpendicular to the stretching direction. An interface of gradient interpenetrating polymer networks (IPN) is considered to be formed between the stiff UV-cured film and the elastic support, which is practically beneficial for preventing crack formation and film delamination during the strain relaxation process. The periodicity of the gratings is tuned by controlling the thickness of the UV-cured polymer film and the amplitude of pre-strain of the elastic sheet. The imprinting results demonstrate that these self-formed wrinkles can serve as a mold to duplicate gratings by nanoimprint lithography. Furthermore, metal gratings are successfully fabricated from the wrinkling molds.

Graphical abstract: Crack-free controlled wrinkling of a bilayer film with a gradient interface

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 Mar 2012, accepted on 06 Jul 2012 and first published on 07 Aug 2012


Article type: Paper
DOI: 10.1039/C2SM25487E
Citation: Soft Matter, 2012,8, 9603-9609

  •   Request permissions

    Crack-free controlled wrinkling of a bilayer film with a gradient interface

    Y. Xuan, X. Guo, Y. Cui, C. Yuan, H. Ge, B. Cui and Y. Chen, Soft Matter, 2012, 8, 9603
    DOI: 10.1039/C2SM25487E

Search articles by author

Spotlight

Advertisements