Marine facilities and ships are easily plagued by biofouling. Synergistic surfaces combining surface reactive ion etching and peptide modification were designed and prepared to tackle surface biofouling. Six microstructural surfaces were first designed and machined based on the contact point theory; the synergistic surfaces were then prepared by peptide modification. Laser confocal scanning microscope (LCSM), scanning electron microscopy (SEM), contact angle measurement, and X-ray photoelectron spectroscopy (XPS) were utilized to analyze the surface morphology and surface chemical properties; the results demonstrated that six synergistic surfaces were prepared successfully with 0.8-μm depth, surface contact angle increased from 75° to 116.99°, and the surface chemical compositions were also changed significantly due to peptide modification. Antibiofilm assays showed that surface modification and surface topology could slightly reduce the formation of biofilm. While the synergistic surfaces possess strong anti-algal performance, and anti-Chlorella pyrenoidosa (C. pyrenoidosa) and anti-Phaeodactylum tricornutum (P. tricornutum) rates reached 78.56% and 87.80%, respectively after 7-day immersion in artificial seawater. Compared with the single surface treatment method, the antifouling performance of the synergetic surfaces were stronger. This strategy demonstrated a realistic paradigm for the further improving surface antifouling performance in a green method.

中文翻译：

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结合地形和肽抑制藻类附着：肽修饰微结构表面的制备

海洋设施和船舶很容易受到生物污垢的困扰。结合表面反应离子蚀刻和肽修饰的协同表面被设计和制备以解决表面生物污垢。六个微结构表面首先基于接触点理论设计和加工；然后通过肽修饰制备协同表面。利用激光共聚焦扫描显微镜（LCSM）、扫描电子显微镜（SEM）、接触角测量和X射线光电子能谱（XPS）分析表面形貌和表面化学性质；结果表明，成功制备了 0.8 μm 深度的 6 个协同表面，表面接触角从 75° 增加到 116.99°，并且由于肽修饰，表面化学成分也发生了显着变化。抗生物膜分析表明，表面改性和表面拓扑结构可以略微减少生物膜的形成。而协同表面具有很强的抗藻性能，抗在人工海水中浸泡7天后，蛋白核小球藻（C. pyrenoidosa）和三角褐指藻（P. tricornutum）的杀灭率分别达到78.56%和87.80%。与单一表面处理方法相比，协同表面的防污性能更强。该策略展示了以绿色方法进一步提高表面防污性能的现实范例。