Raman line scan across a flake edge at 7.2 um150020002500024681012Raman shift (1/cm)position (um)linear norm150020002500024681012Raman shift (1/cm)position (um)PowerNorm(0.40)0.511.52counts (norm.)0.511.52counts (norm.)Raman line scan across a flake edge at 7.2 um