Biomimetic Superhydrophobic Hollowed-Out Pyramid Surface Based on Self-Assembly

In this paper, we present a periodic hollowed-out pyramid microstructure with excellent superhydrophobicity. In our approach, T-topping pillars and capillary-induced self-assembly methods were combined with the photolithography process to fabricate a hollowed-out pyramid structure. First, a wideband...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2018-05, Vol.11 (5), p.813
Main Authors: Luo, Weipeng, Yu, Bin, Xiao, Dingbang, Zhang, Meng, Wu, Xuezhong, Li, Guoxi
Format: Article
Language:English
Subjects:
Biomimetics
Broadband
Contact angle
Drag reduction
Friction drag
Friction reduction
Hydrophobic surfaces
Hydrophobicity
Photolithography
Scanning electron microscopy
Self-assembly
Ultraviolet radiation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we present a periodic hollowed-out pyramid microstructure with excellent superhydrophobicity. In our approach, T-topping pillars and capillary-induced self-assembly methods were combined with the photolithography process to fabricate a hollowed-out pyramid structure. First, a wideband ultraviolet source without a filter was used to fabricate the T-topping pillars during the exposure process; then, the evaporation-induced assembly collapsed the pillars and formed the hollowed-out pyramid structure. Scanning electron microscopy images showed the microstructures of the prepared surface. The contact angle of the surface was 154°. The surface showed excellent high temperature and ultraviolet irradiation tolerance, and the contact angle of the surface barely changed when the temperature dropped. This excellent environmental durability of our superhydrophobic surface has potential applications for self-cleaning and friction drag reduction under water.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma11050813