Surfaces in a hygiene critical environment can become potential reservoirs for transmission of pathogenic infections. Engineering surfaces with the tunable anti-biofouling and antibacterial properties could reduce infections particularly in hospitals and public transport hubs. In the present work, a facile two-step process has been deployed to fabricate a superhydrophobic and antibacterial aluminum surface by chemical etching, followed by passivation with low surface energy octyltriethoxysilane (OTES) molecules. The wettability and antibacterial properties of the OTES passivated aluminum was monotonically tuned by adding quaternary ammonium (QUATs) molecules. An anti-biofouling property of 99.9% against Staphylococcus aureus, 99% against Pseudomonas aeruginosa and 99% against E. coli bacteria, was achieved.

中文翻译：

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具有防污垢和抗菌性能的可调节超疏水铝表面

在对卫生至关重要的环境中的表面可能会成为传播病原性感染的潜在储存库。具有可调节的抗生物结垢和抗菌性能的工程表面可以减少感染，尤其是在医院和公共交通枢纽中。在目前的工作中，已经采用了一种简单的两步工艺来通过化学蚀刻制造超疏水和抗菌的铝表面，然后用低表面能的辛基三乙氧基硅烷（OTES）分子进行钝化。通过添加季铵（QUATs）分子对OTES钝化铝的润湿性和抗菌性能进行了单调调整。抗金黄色葡萄球菌99.9％，抗铜绿假单胞菌99％，抗金黄色葡萄球菌99％实现了大肠杆菌。