The effect of the surface wettability of plasma-modified vertical Si nanowire array on the bio-fouling performance has been investigated. The Si nanowires prepared by a metal-assisted chemical etching technique exhibit a super-hydrophilic surface. The treatment in CH₄/H₂ gas plasma environment leads to the decoration of graphite and diamond nanoparticles around Si nanowires. The detailed interface between graphite/diamond and Si nanowire was characterized by HRTEM technique. These surface-modified nanowire samples show an increased water contact angle with ultrananocrystalline diamond decorated ones being superhydrophobic. The immersion test in chlorella solution reveals that the diamond-coated Si nanowires possess the least attachment of chlorella in comparison with other Si nanowires. This result confirms that the coating of Si nanowires with diamond nanoparticles shows the best behavior in anti-biofouling. Importantly, this work provides a method fabricated super-hydrophobic surface for the application of biofouling prevention.

研究了等离子体改性垂直硅纳米线阵列的表面润湿性对生物污染性能的影响。通过金属辅助化学蚀刻技术制备的Si纳米线表现出超亲水表面。CH ₄ / H _{2中的处理}气体等离子体环境导致围绕Si纳米线的石墨和金刚石纳米粒子的装饰。石墨/金刚石与硅纳米线之间的详细界面通过HRTEM技术进行了表征。这些表面改性的纳米线样品显示出增加的水接触角，而超纳米晶金刚石装饰的样品具有超疏水性。在小球藻溶液中的浸没测试表明，与其他Si纳米线相比，金刚石涂层的Si纳米线具有最小的小球藻附着性。该结果证实了用金刚石纳米粒子涂覆的硅纳米线在抗生物结垢方面表现出最佳的行为。重要的是，这项工作提供了一种制备超疏水表面的方法，以用于生物污垢的预防。