Figure 4From: In Situ Confocal Raman Mapping Study of a Single Ti-Assisted ZnO Nanowirea Spatial mapping of corresponding Raman intensities of the E2 peak ranging from 417 to 448 cm−1; b series of Raman spectra taken along the growth direction of a single ZnONW. The E2 phonon peak shifts to a lower frequency and broadens as a result of the nano-sized effectBack to article page