Evidence for capillarity contributions to gecko adhesion from single spatula nanomechanical measurements
Huber, G., Mantz, H., Spolenak, R., Mecke, K., Jacobs, K., Gorb, S., Arzt, E., Proc. Natl Acad. Sci. USA 102, 16293–16296 (2005).
capillarity, adhesion, monolayer, spatula, contact angle
This paper shows that humidity affects gecko adhesion on the spatular level, i.e., the smallest level of the hierarchial gecko foot structure. Previous studies had rejected the contribution of capillarity, suggesting that van der Waals forces dominate the high adhesion.