Figure 2
From: Electronic origin of antimicrobial activity owing to surface effect
Results of antimicrobial activity tests. (a) SEM image of E. coli cultured on npAu-Pt0.5. E. coli cultured on npAu-Pt0.5 was dead and its cell membrane was broken (cytoplasm drained out of bacterial body, as indicated by arrows). (b) SEM image of E. coli cultured on flat Au (fAu). E. coli cultured on fAu was not dead. (c) Antimicrobial activities (AA) of npAu-Pt and npAu. (d) Relationship between AA and work function (WF). In the figure, npAu (20 nm) is for npAu with a pore size of 20 nm and npAu (50 nm) is for npAu with a pore size of 50 nm. The AA of npAu (50 nm) is the one obtained in the previous study11.
