Fig. 5. Time-dependent alive cell ratio of four E. coli strains evaluated by the macroscopic bactericidal property test. Circles, triangles, squares, and diamonds represent E. coli strains RP437 (WT), RP437 fliC (absence of flagella), RP6894 (presence of flagella but deficit of motility), and UU2612 (absence of chemotaxis), respectively. Closed symbols plotted against incubation time show the alive cell ratio obtained on the Si nano-pillar array substrate. Opened symbols show the alive cell ratio after a 24 h incubation obtained on the flat Si substrate, which served as a reference.
