Mask-guided microbial jet machining for functionalized textured interface fabrication

作者：Jiafu Ruan, Xigui Wang, Yongmei Wang, Weiqiang Zou · 发表于：Scientific Reports · 年份：2026 · DOI：10.1038/s41598-026-35244-8 · 被引用次数：1 · 研究领域：Bacterial biofilms and quorum sensing、Erosion and Abrasive Machining、Advanced Surface Polishing Techniques

This study innovatively develops a novel Mask-Guided Microbial Jet Machining (MGMJM) technology, successfully achieving the precision fabrication of functional microconfigurations on the contact interface of phosphor copper-tin alloy (ZCuSn10Pb1), which significantly enhances the material’s friction and wear performance. By ingeniously integrating the metabolic activity of Acidithiobacillus ferrooxidans with a directional jetting process of cultured supernatant, this technology establishes an efficient and precise new method for microbial machining of surface texturing. Experimental data demonstrated the outstanding processing efficiency advantages of MGMJM: its Material etching rate is 59.36 times higher than that of traditional immersion methods and 5.27 times higher than shaking methods. More importantly, the micro-dimple elements configurations fabricated by this method exhibited excellent multi-scale morphological consistency. Micro-tribological performance tests confirmed that the friction coefficient of the textured interface processed by MGMJM can be reduced by up to 56.8% compared to smooth surfaces, fully validating the technology’s environmentally friendly characteristics and sustainable manufacturing advantages. This paper systematically reveals the material removal mechanism of MGMJM technology, laying an important theoretical foundation for expanding the engineering applications of microbial machining technologies. The innovative application of this technology i...