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 › peer-review

43 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
Mechanics of Materials
Mechanical Engineering

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title = "Replication of rose-petal surface structure using UV-nanoimprint lithography",

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.",

keywords = "Adhesion, Biomimetic, Petal effect, UV-molding, Wenzel-Cassie state",

author = "Soyoung Choo and Choi, {Hak Jong} and Heon Lee",

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.",

year = "2014",

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day = "15",

doi = "10.1016/j.matlet.2014.01.037",

language = "English",

volume = "121",

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journal = "Materials Letters",

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AU - Choo, Soyoung

AU - Choi, Hak Jong

AU - Lee, Heon

N1 - 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.

PY - 2014/4/15

Y1 - 2014/4/15

N2 - 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.

AB - 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.

KW - Adhesion

KW - Biomimetic

KW - Petal effect

KW - UV-molding

KW - Wenzel-Cassie state

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U2 - 10.1016/j.matlet.2014.01.037

DO - 10.1016/j.matlet.2014.01.037

M3 - Article

AN - SCOPUS:84894239252

VL - 121

SP - 170

EP - 173

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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