Abstract
Inspired by geckos' spatulae, the adhesive behavior of a finite nano-film is investigated theoretically and numerically in this paper, considering the effects of adhesive length as well as surface roughness. It is found that (1) an effective adhesive length controls the peeling-off force, beyond which the peeling-off force will keep a constant for a determined peeling angle; (2) An intermediate surface roughness exists, at which the normal adhesion force between a finite nano-film and the rough surface achieves the weakest. All the results are qualitatively consistent with the experimental observations, which may be helpful for understanding geckos' micro-adhesion mechanisms.
| Original language | English |
|---|---|
| Pages | 140-143 |
| Number of pages | 4 |
| Publication status | Published - 2011 |
| Externally published | Yes |
| Event | 3rd International Conference on Heterogeneous Materials Mechanics, ICHMM 2011 - Shanghai, China Duration: 22 May 2011 → 26 May 2011 |
Conference
| Conference | 3rd International Conference on Heterogeneous Materials Mechanics, ICHMM 2011 |
|---|---|
| Country/Territory | China |
| City | Shanghai |
| Period | 22/05/11 → 26/05/11 |
Keywords
- Adhesive length
- Finite nano-film
- Gecko
- Spatula
- Surface roughness