Water/methanol Repellency and Preparation of Biomimetic Silver Film on Butterfly Wing

DOI

10.2991/mecs-17.2017.70How to use a DOI?

Keywords

Superhydrophobicity, Oleophobicity, Preparation, Metal film, Biomaterial.

Abstract

The hydrophobicity and oleophobicity (methanol repellency) of butterfly wing surfaces were measured by a video-based contact angle (CA) meter. The multi-dimensional microstructure of the wing surfaces was characterized by a scanning electron microscope (SEM) and an atomic force microscope (AFM). The wing surface exhibits superhydrophobicity (water CA 150.8~158.5ø) and low adhesion (water sliding angle 1~4ø). Meanwhile, the wing surface displays high repellency against methanol. The critical concentrations for wetting and spreading-wetting of methanol solution on the wing surface are 60% and 85%, respectively. The wing surface is of hydro-oleophobicity. The wing surface possesses complicated hierarchical microstructures. Using the butterfly wing as a bio-template, the hydrophobic silver films were prepared. Water CA increases from metal silver's intrinsic CA 63.0ø to up to 140.6ø (Speyeria aglaja, 5 nm silver film). The micro-morphology on the wing result in the transition of metal silver from hydrophilic to hydrophobic. The butterfly wing can be used as a template for design of smart interface and functional surface.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yan Fang
AU  - Gang Sun
AU  - Wanxing Wang
AU  - Jingshi Yin
PY  - 2016/06
DA  - 2016/06
TI  - Water/methanol Repellency and Preparation of Biomimetic Silver Film on Butterfly Wing
BT  - Proceedings of the 2017 2nd International Conference on Machinery, Electronics and Control Simulation (MECS 2017)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/mecs-17.2017.70
DO  - 10.2991/mecs-17.2017.70
ID  - Fang2016/06
ER  -