Different angle-resolved polarization configurations of Raman spectroscopy: A case on the basal and edge plane of two-dimensional materials Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0301204) and the National Natural Science Foundation of China (Grant Nos. 11604326, 11434010, 11474277, and 11225421). |
(color online) (a) Optical image at edge planes of HOPG with the pre-existing azimuth angle fixed at |