Replication of rose-petal surface structure using UV-nanoimprint lithography

Soyoung Choo; Hak Jong Choi; Heon Lee

doi:10.1016/j.matlet.2014.01.037

Replication of rose-petal surface structure using UV-nanoimprint lithography

Soyoung Choo, Hak Jong Choi, Heon Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

32 Citations (Scopus)

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	https://doi.org/10.1016/j.matlet.2014.01.037
Publication status	Published - 2014 Apr 15

Keywords

Adhesion
Biomimetic
Petal effect
UV-molding
Wenzel-Cassie state

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanical Engineering
Mechanics of Materials

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Choo, S., Choi, H. J., & Lee, H. (2014). Replication of rose-petal surface structure using UV-nanoimprint lithography. Materials Letters, 121, 170-173. https://doi.org/10.1016/j.matlet.2014.01.037

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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.",

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