Antimicrobial Studies of Black Silicon and Black Diamond Using Gram‐Positive Bacteria

Herein, it is investigated if black diamond useful in a bactericidal surface. Black derived from silicon, silicon surface structured into nanosized needles. obtained by coating with thin film, rendering the nanostructures more robust. The and antibacterial properties of fluorine‐terminated hydrogen‐terminated diamonds those for flat surfaces (on silicon) same terminations are studied. ability to repel kill Gram‐positive Staphylococcus aureus epidermidis evaluated, which have thicker cell wall mechanically robust than bacteria that studied before. initial adhesion as well long‐term 24 h biofilm formation number initially adhere reduced has highest dead bacterial ratio. Biofilm after shows while all outperform glass over long term, diamond‐coated both fluorine hydrogen termination significant inhibiting effect. In conclusion, fluorinated hydrogenated without nanoneedles repelling, bactericidal, biofilm‐inhibiting effects on strains promising antimicrobial surfaces.