Fig. 5
a The representative of Au microwires antimicrobial CFU enumeration based on the individual colonies of E. coli DH5α formed after 24 h. Blue marker was used to mark the colonies with dots marking at the bottom side of the petri dish. b The number of bacterial colonies (%) appeared in agar plated treated with control (water), 10, 30 µg/mL and 100 µg/mL of Au ions, 2 µg/mL of commercial Au microwires suspended in CTAB, hexane and < 330 µg/mL as-synthesised Au microwires in hexane. c Activity of antimicrobial CFU assay of Au microwires capped with CTAB and NaHCO3 after 24 h of plate-incubation. Water is used as a control sample