Jump to main content
Jump to site search


Bio-inspired hierarchical micro- and nano-wrinkles obtained via mechanically directed self-assembly on shape-memory polymers

Author affiliations

Abstract

Inspired by complex multi-functional leaf and petal surfaces, we introduce a mechanically directed self-assembly process to create linearly oriented micro- and nanosized surface wrinkles in an all-polymer bi-layer system based on a shape-memory polymer substrate. By systematically investigating the influence of coating thickness and substrate programming strain on wrinkle period and height, we reveal how to control the structure size from a few hundred nanometers up to several microns. As a parameter unique to shape memory polymers, we demonstrate that the temperature during the recovery process can also be utilized to tailor the structure dimensions. Furthermore, we advance the method with a second structuring step to mimic the hierarchically structured petal surfaces of tulips and daisies. The presented structuring method provides a large-scale, mold-free, and very cost-effective way for the full-polymer fabrication of micro and sub-microstructures with adjustable structure size and intrinsic irregularity.

Graphical abstract: Bio-inspired hierarchical micro- and nano-wrinkles obtained via mechanically directed self-assembly on shape-memory polymers

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 21 Jan 2017, accepted on 05 May 2017 and first published on 05 May 2017


Article type: Paper
DOI: 10.1039/C7SM00154A
Citation: Soft Matter, 2017, Advance Article
  •   Request permissions

    Bio-inspired hierarchical micro- and nano-wrinkles obtained via mechanically directed self-assembly on shape-memory polymers

    S. Schauer, M. Worgull and H. Hölscher, Soft Matter, 2017, Advance Article , DOI: 10.1039/C7SM00154A

Search articles by author