Fig. 2 Data ploted in Fig 2(c) are contained in "Fig 2c_AFM.ibw" Data ploted in inset to Fig 2(c) are contained in "Fig 2c_inset_AFM height profile.xlsx" Fig. 3 Data plotted in Fig. 3 are contained in Fig 3 folder. Files are self-explanatory from names. Fig. S1 in Supporting Information Data plotted in Fig. S1 are contained in Fig S1 folder. Files are self-explanatory from names. Raw data have same format: column 1: Raman shift (cm-1) column 2: Intensity (counts per second)