一种具有动态防污性能的仿生磁响应表面

IF 5.8 3区 计算机科学 Q1 ENGINEERING, MULTIDISCIPLINARY
You Chen, Zijing Quan, Xiaofeng Jiang, Hanliang Ding, Bo Li, Jie Zhao, Shichao Niu, Zhiwu Han, Luquan Ren
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引用次数: 0

摘要

超疏水/超亲水防污材料被广泛应用于解决海洋设备严重的水污染和生物粘附问题。然而,传统的防污材料依赖于表面的静态超润湿性,其防污效果持续时间较短。摘要以疏水微纤毛阵列为基础,设计并制备了一种仿生磁响应防污表面(BMRAS),该表面具有独特的动态防污策略。BMRAS被高纵横比的微纤毛包裹,微纤毛填充了合成的磁性Fe3O4纳米颗粒。生物仿生疏水微纤毛阵列使BMRAS具有优异的内在超疏水性,这得益于其高纵横比特性和粗糙度效应。静接触角大于156.9±1.6°,滚动角小于2.3±0.3°。合成的磁性纳米材料在实现动态防污策略中起着关键作用。一方面,在磁控振荡下,表面张力可以根据需要进行调节。另一方面,磁性纳米材料的掺杂可以提高高纵横比微纤毛的力学性能,减少毛细力引起的聚集。防污试验表明,化学修饰的微纤毛能在外加磁场的刺激下有效地排出砾石,使BMRAS实现动态自清洁。其中,分布在BMRAS上的0.17 g砾石可在0.296 s内被完全清除,比平面材料提高了14.2%。本研究为设计具有优异物理化学耐久性和巨大潜在应用价值的动态防污表面提供了一种简单有效的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Biomimetic Magnetic-Responsive Surface With the Dynamic Antifouling Property Inspired by Calliphora Vicina Wing

Superhydrophobic/superhydrophilic antifouling materials are widely used to solve the severe water pollution and bio-adhesion of marine equipment. However, conventional antifouling materials rely on the static superwettability of surfaces, which suffer from poorly sustained antifouling effects. Inspired by the unique dynamic antifouling strategies of Calliphora Vicina wing surface based on the hydrophobic micro-cilia arrays, a Biomimetic Magnetic-Responsive Antifouling Surface (BMRAS) is designed and fabricated using a method combining UV lithography and an inverse molding. The BMRAS is coated by high-aspect-ratio micro-cilia, which are filled with synthesized magnetic Fe3O4 nanoparticles. The bioinspired hydrophobic micro-cilia arrays endow the BMRAS with excellent intrinsic superhydrophobicity, benefiting from the high-aspect-ratio feature and roughness effect. Remarkably, the static contact angle is more than 156.9 ± 1.6° and the rolling angle is less than 2.3 ± 0.3°. The synthesized magnetic nanomaterials play a key role in implementing dynamic antifouling strategies. On the one hand, the surface tension can be adjusted as required under magnetically controlled oscillations. On the other hand, the doping of magnetic nanomaterials can enhance mechanical properties and reduce capillary force-induced aggregation of high-aspect-ratio micro-cilia. The antifouling tests demonstrate that the chemically modified micro-cilia can effectively expel gravels under the stimulation of an external magnetic field and enable the BMRAS to achieve dynamic self-cleaning. Specifically, 0.17 g gravel distributed on BMRAS can be completely cleaned up within 0.296 s, which improved by 14.2% compared with the flat materials. This work provides a brief and effective strategy for designing dynamic antifouling surfaces with excellent physicochemical durability and great potential value in the applications of marine fouling.

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来源期刊
Journal of Bionic Engineering
Journal of Bionic Engineering 工程技术-材料科学:生物材料
CiteScore
7.10
自引率
10.00%
发文量
162
审稿时长
10.0 months
期刊介绍: The Journal of Bionic Engineering (JBE) is a peer-reviewed journal that publishes original research papers and reviews that apply the knowledge learned from nature and biological systems to solve concrete engineering problems. The topics that JBE covers include but are not limited to: Mechanisms, kinematical mechanics and control of animal locomotion, development of mobile robots with walking (running and crawling), swimming or flying abilities inspired by animal locomotion. Structures, morphologies, composition and physical properties of natural and biomaterials; fabrication of new materials mimicking the properties and functions of natural and biomaterials. Biomedical materials, artificial organs and tissue engineering for medical applications; rehabilitation equipment and devices. Development of bioinspired computation methods and artificial intelligence for engineering applications.
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