(a,b) SEM images of bacterial cells accumulated on the sample surface
when immersed into bacterial suspension and curves of optical density
at 600 nm of bacterial suspension with the tested sample [(a) density
of bacterial suspension: 104 CFU/mL, (b) density of bacterial
suspension: 105 CFU/mL, n = 3 in each
group, data in graphs is the average of multiple experiments; magnification:
10.0k× and 20.0k×; voltage: 5.0 kV]. (c) Contact assay:
comparison of bacteria growth area ratio of the AuDAPT-coated samples
and untreated samples [(a) AuDAPT-coated sample contacting area; (b)
untreated sample contacting area; (c) blank control; control: (b/c);
AuDAPT: (a/c), n = 3, data in graphs is the average
of multiple experiments] (P < 0.05).