非杀菌防污涂料灵感来自珊瑚触手在波浪中的“摇摆效应”。

IF 3.9 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY
Yue Yin, Jianfu Wang, Xu Zheng
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引用次数: 0

摘要

受珊瑚触手在水流驱动下自由摆动以主动排斥微生物附着的启发,我们确定了一种独特的物理防污策略:珊瑚“摆动效应”防污。以肉质软珊瑚(Sarcophyton trocheliophorum)为例,它的表面覆盖着许多柔软的触须。这些珊瑚触须利用水流波动的力量自由摆动,就像一个“鸡毛掸子”挥舞,以击退试图定居和建立自己的微生物。基于这一特点,本研究深入研究珊瑚的生活习性,观察其触手的扩张和收缩周期。同时,对珊瑚触须的防污性能进行了模拟。说明触须的“摆动效应”可以有效地防止污垢生物的附着。此外,本研究还以棘球藻(S. trocheliophorum)为仿生原型,设计并制备了人工珊瑚模拟基质(ACMS)。采用常见的海洋革兰氏阴性菌泛养副球菌作为微生物样本,在纯静态水环境和低流量水环境下测试抗污性能。结果表明,在低速水流(3.5 m/s)的单向冲刷作用下,13 mm长的ACMS能最大程度地弯曲和重叠后触手表面,形成防污保护层。此外,触角在水流冲刷下产生的“摆动效应”现象也显示出良好的防污效果。本研究不仅为珊瑚防污性能的研究提供了进一步的证据,也为港口停泊船舶和码头水下基础设施等低流量水环境下的防污策略提供了新的概念和思路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Non-Bactericidal Antifouling Coating Inspired by the "Swinging Effect" of Coral Tentacles in Waves.

Inspired by the free swing of coral tentacles driven by water currents to actively repel microbial attachment, we have identified a unique physical anti-fouling strategy: coral "swinging effect" anti-fouling. Taking the fleshy soft coral (Sarcophyton trocheliophorum) as an example, its surface is covered with numerous soft tentacles. These coral tentacles utilize the force of water current fluctuations to freely sway, resembling a "feather duster" waving to repel microorganisms attempting to settle and establish themselves. Based on this characteristic, this study delves into the living habits of corals, observing the expansion and contraction cycles of their tentacles. Simultaneously, simulations of the anti-fouling performance of coral tentacles were conducted. It demonstrates that the "swinging effect" of the tentacles can effectively prevent the attachment of fouling organisms. Furthermore, this study uses S. trocheliophorum as a biomimetic prototype to design and prepare an artificial coral-mimic substrate (ACMS). It employs the common marine Gram-negative bacterium Paracoccus pantotrophus as a microbial sample to test anti-fouling performance in both pure static water environments and low-flow water environments. The results showed that the 13 mm-long ACMS could bend and overlap the surface of the rear tentacles to the greatest extent under the unidirectional scouring action of low-speed water flow (3.5 m/s), forming an anti-fouling protective layer. Additionally, the "swinging effect" phenomenon generated by the tentacles under water flow scouring demonstrated excellent anti-fouling effects. This study not only provides further evidence for research on coral antifouling performance but also offers new concepts and ideas for antifouling strategies in low-flow water environments, such as stationary ships in ports and underwater infrastructure facilities at docks.

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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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