“…[54][55][56] In order to better understand the mechanism of their properties, it is necessary to characterize them to determine their composition, structure, morphology, integrity and so on. 57 It is widely known that the small size effect, quantum size effect, quantum limit effect and surface effect of nanoscale materials show many characteristics that are not possessed by bulk materials in terms of spectral performance and molecular imaging. 58,59 The shape is widely characterized by recruiting high-resolution microscopy methods such as scanning and transmission electron microscopy.…”