Remarkable bactericidal traits of a metal-ceramic composite coating elated by hierarchically structured surface

• DOI: 10.1016/j.isci.2020.101942
• Publication Date: 2020-12-13T15:46:27Z
• Authors: Jiang Xu; Zhijian Pan; Shaung Peng; Yanjie Zhao; Shuyun Jiang; Yu jie Chen; Zong-Han Xie; Paul Munroe
• Keywords: Microbiofilms; Coatings; Science; Q; 02 engineering and technology; Biomedical Materials; 0210 nano-technology; Article; 3. Good health

A ceramic-based coating with a hierarchical surface structure was synthesized via solid-state reaction enabled by double cathode glow discharge technique. This innovative comprises two distinct layers, specifically an outer layer well-aligned micro-pillar array and dense inner layer. Both are composed of face-centered cubic Cu(Co,Ni,Fe) solid solution phase together spinel-type Fe(Al,Cr)2O4 oxide. exhibits superhydrophobicity and, yet, very strong adhesion to water, i.e., the so-called “rose petal effect”. also highly efficient antibacterial ability against both Staphylococcus aureus Escherichia coli bacteria under dark visible light conditions. The excellent property originates from synergistic effects through release Cu ions coupled photothermal activity upon activation.