Abstract
A study was conducted to demonstrate a simple method for fabricating stopped high-aspect-ratio (AR) nanohairs of polyurethane acrylate (PUA) material that utilized replica molding and post-electron-beam irradiation. The method offered a facile route to prepare angled polymer nanohairs without multistep processes or surface treatment. It was demonstrated that the PUA material was molded into a geometry controlled and high-density nanochair surface with an AR of up to 10 without facing self-matting problem, due to its favorable mechanical properties. The as-formed hairy structures also allowed for structural transformation into directional and angled nanohairs, while maintaining better adhesion capability. The nanohair surface also showed significant unidirectional adhesion properties and a higher shear adhesion due to its structural similarity to natural gecko foot hairs.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2276-2281 |
| Number of pages | 6 |
| Journal | Advanced Materials |
| Volume | 21 |
| Issue number | 22 |
| DOIs | |
| State | Published - Jun 12 2009 |
| Externally published | Yes |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledged KAUST grant number(s): KUK-F1-037-02
Acknowledgements: This work was supported by the Korea Science & Engineering Foundation through the NANO R&D Program (Grant 2007-02605) and the King Abdullah University of Science and Technology (KAUST) program (KUK-F1-037-02). This work was also supported in part by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (Grant KRF-J03000), the Micro Thermal System Research Center, and the Engineering Research Institute. Supporting Information is available online at Wiley InterScience or from the author.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.