Non-Smooth Morphologies of Typical Plant Leaf Surfaces and Their Anti-Adhesion Effects |
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Authors: | Lu-quan Ren Shu-jie Wang Xi-mei Tian Zhi-wu Han Lin-na Yan Zhao-mei Qiu |
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Affiliation: | aKey Laboratory of Terrain-Machine Bionics Engineering (Ministry of Education, China), Jilin University (Nanling Campus), Changchun 130022, P. R. China |
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Abstract: | The micromorphologies of surfaces of several typical plant leaves were investigated by scanning electron microscopy(SEM).Different non-smooth surface characteristics were described and classified.The hydrophobicity and anti-adhesion of non-smooth leaf surfaces were quantitatively measured.Results show that the morphology of epidermal cells and the morphology and distribution density of epicuticular wax directly affect the hydrophobicity and anti-adhesion.The surface with uniformly distributed convex units shows the best anti-adhesion,and the surface with regularly arranged trellis units displays better anti-adhesion.In contrast,the surface with randomly distributed hair units performs relatively bad anti-adhesion.The hydrophobic models of papilla-ciliary and fold-setal non-smooth surfaces were set up to determine the impacts of geometric parameters on the hydrophobicity.This study may provide an insight into surface machine molding and apparent morphology design for biomimetics engineering. |
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Keywords: | bionics non-smooth leaf surface hydrophobicity anti-adhesion |
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