Manufacture of wrinkly colloids
We aim to develop a scalable route for the manufacture of cellulose-based colloids exhibiting a wrinkly surface topography
Surface topographies on plants can have a variety of functions . They impart superhydrophobicity, modify the heat-signature, act as photonic gratings, and provide a tactile function for pollinating insects. Very recently surface wrinkle patterns were shown to be highly effective for insect repellency [2-4]. Cuticular folds with the insect repelling functionality are however found only on specific plants. On the other hand,the agricultural industry deploys ca. 1-10 kg or pesticides per hectare of cultivated land,giving rise to health end environmental issues. The development of an effective insect repelling agent that is non-toxic and made entirely from nature-sourced waste materials is thus an appealing prospect.
The goal of this project is therefore to mimic insect repellence occurring in nature, and develop a non-toxic, sustainable and natural insect repelling agent that is easy to deploy.
 K. Koch, B. Bhushan, and W. Barthlott, “Multifunctional surface structures of plants: An inspiration for biomimetics,” Progress in Materials Science, vol. 54, no. 2, pp. 137–178, Feb. 2009.
 B. Prüm, H. Florian Bohn, R. Seidel, S. Rubach, and T. Speck, “Plant surfaces with cuticular folds and their replicas: Influence of microstructuring and surface chemistry on
the attachment of a leaf beetle,” Acta Biomaterialia, vol. 9, pp. 6360–6368, Mai 2013.
 B. Prüm, R. Seidel, H. F. Bohn, and T. Speck, “Plant surfaces with cuticular folds are slippery for beetles,” Journal of The Royal Society Interface, p. rsif20110202, Jun. 2011.
 B. Prüm, R. Seidel, H. F. Bohn, and T. Speck, “Impact of cell shape in hierarchically structured plant surfaces on the attachment of male Colorado potato beetles (
Leptinotarsa decemlineata ),” Beilstein Journal of Nanotechnology, vol. 3, pp. 57–64, Jan. 2012.
- Related publications
Polymerization‐Induced Wrinkled Surfaces with Controlled Topography as Slippery Surfaces for Colorado Potato Beetles
Bergmann Johannes B., Moatsou Dafni, Surapaneni Venkata A., Thielen Marc, Speck Thomas, Wilts Bodo D., Steiner Ullrich
Advanced Materials Interfaces (2020)
- Related projects
Projects of BERGMANN Johannes