“…The corundum structure of In2O3 has 7 Raman-active modes whose frequencies at ambient pressure have been already reported in bulk and nanocrystals. 22,30,37,39,40 Figure 3 shows selected 39 and 3D rh-In2O3 nanoflowers 40 were characterized by XRD and Raman spectroscopy at room conditions. In the former geometry, the Raman spectrum showed peaks at 164, 222, 273, 385, 504, and 595 cm -1 whereas in the latter, the Raman modes appeared at 163, 219, 384, 501 and 590 cm -1 .…”