Fig.12
![Fig.12](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12951-022-01578-4/MediaObjects/12951_2022_1578_Fig12_HTML.png)
Influence of the size of hierarchical micro/nano-structures on initial bacterial adhesion. a OD value of initial bacterial adhesion. b The surface contact state between E. coli and each sample. c The surface contact state between S. aureus and each sample. *P < 0.01, **P < 0.05