Abstract
We introduce a simple yet robust method of fabricating a stretchable, adhesion-tunable dry adhesive by combining replica molding and surface wrinkling. By utilizing a thin, wrinkled polydimethyl siloxane (PDMS) sheet with a thickness of 1 mm with built-in micropillars, active, dynamic control of normal and shear adhesion was achieved. Relatively strong normal (∼10.8 N/cm2) and shear adhesion (∼14.7 N/cm2) forces could be obtained for a fully extended (strained) PDMS sheet (prestrain of∼3%), whereas the forces could be rapidly reduced to nearly zero once the prestrain was released (prestrain of ∼0.5%). Moreover, durability tests demonstrated that the adhesion strength in both the normal and shear directions was maintained over more than 100 cycles of attachment and detachment. © 2010 American Chemical Society.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2223-2226 |
| Number of pages | 4 |
| Journal | Langmuir |
| Volume | 26 |
| Issue number | 4 |
| DOIs | |
| State | Published - Feb 16 2010 |
| Externally published | Yes |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledged KAUST grant number(s): KUK-FI-037-02
Acknowledgements: This work was supported by the King Abdullah University of Science and Technology (KAUST) program (no. KUK-FI-037-02), the Korea Science & Engineering Foundation through the Nano R&D Program (grant 200702605),and the WCU (World Class University) program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (R31-2008-000-10083-0)
This publication acknowledges KAUST support, but has no KAUST affiliated authors.