Detailseite
Projekt
Adhäsionsmechanismen in mikrostrukturierten, trockenen Haftsystemen mit hierarchischer Struktur
Antragsteller
Professor Dr. Eduard Arzt; Professor Dr. Tobias Kraus
Fachliche Zuordnung
Herstellung und Eigenschaften von Funktionsmaterialien
Förderung
Förderung von 2011 bis 2016
Projektkennung
Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 202764224
The project aims to fabricate, test and understand the mechanics of fibrillar dry adhesive surfaces that imitate reversible attachment systems of insects and geckos. While single-level structures have been realized and studied extensively in recent years, the few attempts to create multi-level hierarchical structures have so far not led to useful adhesive properties, especially against rough surfaces. Guided by recent theoretical models and using unconventional patterning techniques, such hierarchical systems (as present in the gecko's attachment pads) will be fabricated from polymers. Their mechanical behaviour will be investigated with micromechanical tests including in situ optical observation of the deformation on different levels and analysis of contact formation and separation. The adhesion forces vis-à-vis smooth and in particular rough surfaces will be measured and compared with theoretical adhesion models, which may have to be extended. The project will thus lay the foundations for reversible artificial adhesives for surfaces of any degree of roughness.
DFG-Verfahren
Schwerpunktprogramme
Teilprojekt zu
SPP 1420:
Biomimetic Materials Research: Functionality by Hierarchical Structuring of Materials
Internationaler Bezug
Australien, Großbritannien, Indien, USA
