Design of Large-scale Structural Surfaces Inspired by the Peristome of Nepenthes Alata Based on 3D Printing

doi:10.3901/JME.2021.13.225

Abstract

Abstract: Bioinspired surfaces inspired by the peristome of nepenthes alata are difficult to industrialized preparation due to small-scale structure. To solve the problem, the bioinspired surfaces which have large-scale structure and the uni-directional liquid spreading characteristics are designed and prepared by 3D printing. After revealing the uni-directional liquid spreading mechanism, the range above hundreds of microns is obtained based on precision analysis of conventional 3D printing and CFD simulation. Finally, fluid spreading experiments show that a bioinspired surface with 30° microcavity wedge, 570 μm half major axis of ellipse, 360 μm microchannel width, 360 μm shield microstructure length and 200 μm shield microstructure tensile length which has the property of excellent uni-directional liquid spreading can be prepared by conventional 3D printing.

Key words: bioinspired surface, uni-directional liquid spreading, Nepenthes alata peristome, structural parameters, 3D printing

CLC Number:

TB17

JIANG Chen, ZHU Da, WEI Jiuxiang, KONG Lingbao. Design of Large-scale Structural Surfaces Inspired by the Peristome of Nepenthes Alata Based on 3D Printing[J]. Journal of Mechanical Engineering, 2021, 57(13): 225-231.

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