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. 2019 Jul 22;9:10598. doi: 10.1038/s41598-019-46967-2

Figure 2.

Figure 2

Modification of electrode surface properties with electropolymerized layer of PEDOT:PSS and PEG plasticiser. (a) Tip enhanced FTIR spectra of PEDOT:PSS and PEDOT:PSS/PEG coatings. (b) Atomic force microscopy topography maps. (c) Electrochemical impedance spectra. (d) Force as a function of AFM tip indentation depth as measured in aqueous electrolyte to extract the elastic modulus of the different material combinations.