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. Author manuscript; available in PMC: 2021 Mar 29.
Published in final edited form as: Langmuir. 2019 May 14;35(21):7043–7049. doi: 10.1021/acs.langmuir.9b00184

Figure 5.

Figure 5.

SERS spectra of 120 h PA14 wt pellicle biofilms under EC potential control. 0.0 and −0.6 V potentials vs Ag/AgCl were applied to achieve oxidized and reduced conditions, respectively. All spectra were obtained at an integration time of 0.5 s with 10 accumulations, and potentials were applied for 20 s.