Peak 1: Intensity (arb.) Peak 1: Wavenumber (cm-1) Peak 4: Wavenumber (cm-1) Peak 5: Wavenumber -1 150 1060 2150 522.5 523 524.5 525 537.5 550 350 362.5 375 a b c d Fig. 26.2 Raman maps imaging the distribution of intensity (peak 1 only) and wavenumber of particular Raman bands as a function of contact load (expressed in indentation force Fi, contact pressure pi and indentation strainεi) (a) Fi: 44mN, pi: 5.8GPa. εi: 0.25, (b) Fi: 83mN, pi: 6.3GPa, εi: 0.38, (c) Fi: 122mN, pi: 6.4GPa, εi: 0.51, (d) Fi: 180mN, pi: 6.4GPa, εi: 0.72. The scan size is 10μm 10μm. Theblack colored areas in the maps for peak 4 and 5 indicate the absence of the particular Raman band in the collected spectrum 200 Y.B. Gerbig et al.
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