Figure 4

(a) Raman mapping spectrum of E2 (high) mode intensity of sample A; (b) Raman mapping spectrum of E2 (high) mode FWHM of sample A; (c) Raman mapping spectrum of E2 (high) mode peak position of sample A.
(a) Raman mapping spectrum of E2 (high) mode intensity of sample A; (b) Raman mapping spectrum of E2 (high) mode FWHM of sample A; (c) Raman mapping spectrum of E2 (high) mode peak position of sample A.