Abstract
Rose-petal surface consists of a hierarchical structure of microscale papillae and nanofolds. With this micro-nanostructure and surface energy, rose petals exhibit a special property: drops on the petal surface are spherical and do not slide when a petal is held upside down. We replicated the rose-petal surface structure by employing a UV nanomolding process using polyurethane acrylate (PUA) for the first replica and perfluoropolyether (PFPE) for the second replica. PFPE micro-nanostructures, which were identical to the rose-petal hierarchical structure, were formed on a glass substrate. The water contact angle of 144° and contact-angle hysteresis of 83 confirmed that the surface of the glass substrate exhibited a high adhesive force and superhydrophobicity.
| Original language | English |
|---|---|
| Pages (from-to) | 170-173 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 121 |
| DOIs | |
| Publication status | Published - 2014 Apr 15 |
Bibliographical note
Funding Information:This research was supported by the Pioneer Research Center Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (NRF-2013M3C1A3063046) and International Collaborative Research and Development Program and funded by Ministry of Trade, Industry and Energy.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
Keywords
- Adhesion
- Biomimetic
- Petal effect
- UV-molding
- Wenzel-Cassie state
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering