Figure 4

Perturbation correlation moving window 2D-COR FTIR contour maps of SPE-10 in the wavenumber range of 3250–3500 cm−1 under the external voltage of 4 V: (a) synchronous and (b) asynchronous spectra.
Perturbation correlation moving window 2D-COR FTIR contour maps of SPE-10 in the wavenumber range of 3250–3500 cm−1 under the external voltage of 4 V: (a) synchronous and (b) asynchronous spectra.