荆草滑带接触角:测量与模型分析结果

IF 1.3 4区 工程技术 Q4 ENGINEERING, BIOMEDICAL
Lixin Wang, Pan Pan, Shixing Yan, Shiyun Dong
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引用次数: 0

摘要

蜈蚣草的滑带依靠其高度进化的形态和结构表现出显著的超疏水性,逐渐成为开发超疏水材料的仿生原型。然而,控制这一现象的机制尚未通过模型分析得到充分揭示。本文通过接触角测量、形貌/结构检测和模型分析等方法研究了滑层的超疏水性。滑区使超纯水滴产生相当高的接触角(155.11-158.30°),并具有由月状细胞和蜡覆盖层组成的微纳米级分层结构。根据Cassie-Baxter方程和自定义渗透系数,建立了结构特性对接触角影响的模型。分析结果表明,计算接触角(154.67 ~ 159.49°)与实测值高度吻合,表明所建立的模型能够定量表征接触角与结构特性之间的关系。本研究为进一步揭示褐藻滑带的超疏水机理提供了证据,并为超疏水表面的仿生发展提供了启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Contact angle of Nepenthes slippery zone: results from measurement and model analysis
The slippery zone of Nepenthes alata depends on its highly evolved morphology and structure to show remarkable superhydrophobicity, which has gradually become a biomimetic prototype for developing superhydrophobic materials. However, the mechanism governing this phenomenon has not been fully revealed through a model analysis. In this paper, the superhydrophobicity of the slippery zone is studied by contact angle measurement, morphology/structure examination and model analysis. The slippery zone causes an ultrapure water droplet to produce a considerably high contact angle (155.11–158.30°) and has micro–nanoscale hierarchical structures consisting of lunate cells and wax coverings. According to the Cassie–Baxter equation and a self-defined infiltration coefficient, a model was established to analyse the effect of a structure characteristic on the contact angle. The analysis, result showed that the calculated contact angle (154.67–159.49°) was highly consistent with the measured contact angle, indicating that the established model can quantitatively characterise the relationship between the contact angle and the structure characteristic. The authors’ study provides some evidences to further reveal the superhydrophobic mechanism of the slippery zone of N. alata, as well as inspiring the biomimetic development of superhydrophobic surfaces.
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来源期刊
Bioinspired Biomimetic and Nanobiomaterials
Bioinspired Biomimetic and Nanobiomaterials ENGINEERING, BIOMEDICAL-MATERIALS SCIENCE, BIOMATERIALS
CiteScore
2.20
自引率
0.00%
发文量
12
期刊介绍: Bioinspired, biomimetic and nanobiomaterials are emerging as the most promising area of research within the area of biological materials science and engineering. The technological significance of this area is immense for applications as diverse as tissue engineering and drug delivery biosystems to biomimicked sensors and optical devices. Bioinspired, Biomimetic and Nanobiomaterials provides a unique scholarly forum for discussion and reporting of structure sensitive functional properties of nature inspired materials.
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