Journal
SOFT MATTER
Volume 13, Issue 24, Pages 4328-4334Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7sm00154a
Keywords
-
Categories
Funding
- Karlsruhe Nano Micro Facility (KNMF)
- Helmholtz research infrastructure at Karlsruhe Institute of Technology (KIT)
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available