A Micro/Nano Structural Model for Wettability of Moth Wing Surface
Yan FANG, Gang SUN, Jing-shi YIN, Wan-xing WANG, Yu-qian WANG
Available Online May 2017.
- https://doi.org/10.2991/bbe-17.2017.93How to use a DOI?
- Microstructure, Model, Wettability, Moth, Biomaterial.
- The micro-morphology, wettability and chemical composition of the moth wing surfaces were investigated by a scanning electron microscope (SEM), a contact angle (CA) meter and a Fourier transform infrared spectrometer (FT-IR). The micro-morphological models for hydrophobicity on the wing surface were established on the basis of the Cassie-Baxter equation. The wetting mechanism was discussed from the perspective of biological coupling. The moth wing surfaces are composed of naturally hydrophobic material and display micro/nano hierarchical structures, including primary structure (micrometric scales), secondary structure (submicro longitudinal ridges and lateral bridges) and tertiary structure (nano stripes). The wing surfaces exhibit high hydrophobicity (CA 150~156ø) and low adhesion (sliding angle 1~4ø). The cooperative effect of material element and structural element contributes to the special wettability of the wing surface. In micro-dimension, the smaller the width and the bigger the spacing of the scale, the stronger the hydrophobicity of the wing surfaces. In nano-dimension, the smaller the height and the smaller the width and the bigger the spacing of the longitudinal ridge, the stronger the hydrophobicity of the wing surfaces. The micro/nano structural model provides CA predictions in good accord with the data measured. The result may bring inspiration for biomimetic design and preparation of smart interfacial materials and novel self-cleaning coatings.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Yan FANG AU - Gang SUN AU - Jing-shi YIN AU - Wan-xing WANG AU - Yu-qian WANG PY - 2017/05 DA - 2017/05 TI - A Micro/Nano Structural Model for Wettability of Moth Wing Surface BT - 2nd International Conference on Biomedical and Biological Engineering 2017 (BBE 2017) PB - Atlantis Press SN - 2468-5747 UR - https://doi.org/10.2991/bbe-17.2017.93 DO - https://doi.org/10.2991/bbe-17.2017.93 ID - FANG2017/05 ER -