期刊
MATERIALS & DESIGN
卷 219, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2022.110765
关键词
Bionic; Petal-like microstructures; Superhydrophobic surface; Water repellence
资金
- National Natural Science Foundation of China [52075418, 51705400]
- China Postdoctoral Science Foundation [2017M610633, 2019T120896]
- Postdoctoral Science Foundation of Shaanxi Province [2017BSHEDZZ153]
This paper reports a novel biomimetic superhydrophobic surface with petal-like microstructures inspired by the droplet pinning effect. The parameters such as petal number, petal proportion, and spacing distance were studied and optimized to achieve maximum droplet bearing capacity. The optimized petal-like microstructures showed a 58.3% increase in bearing capacity compared to common mushroom microstructures.
Recently, bioinspired mushroom or reentrant mushroom microstructures have attracted intersts of researchers for their amazing water superrepellence property. However, basic principles of exquisite microstructures design for improving water repellence are still lacking. This paper reports a novel 3Dprinted biomimetic superhydrophobic surface with petal-like microstructures inspired by the droplet pinning effect of nepenthes peristome. Then, parameters such as petal number, petal proportion and spacing distance are studied and optimized to improve water repellence, which is evaluated according to droplet bearing capacity. The results show that when the petal number is 4, the spacing distance is 100 lm, and the petal proportion is 50%, the petal-like structured surface achieves its maximum droplet bearing capacity. Comparing with the common mushroom microstructures, the maximum increase rate in bearing capacity is 58.3% for the optimized petal-like microstructures. Corresponding mechanism analysis attributes such superrepellence property to the sharp edge effect and the arch curve effect. Furthermore, the excellent water repellence enables the petal-like microstructured surface to be used for water droplets manipulation, oil-water separation, and captured-air drag reduction. CO 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
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