Figure 2: Raman spectroscopy before and after self-rotation.
From: Macroscopic self-reorientation of interacting two-dimensional crystals
(a,c) Maps of the full-width at half-maximum of Raman 2D peak before and after annealing, respectively (the scale bars are 10 μm). (b,d) Histograms of alignment angles, as recalculated from a and c, respectively.
