FESEM and cross-section images of ZnO quasi-NRs. Prepared in three different Zn(CH3COO)2, namely (A) 10, (B) 20 and (C) 30 mM with ammonia concentration was fixed at 36 mM. (D) is a typical cross-section image for the sample (C). Scale bar is 100 nm.
Ali Umar et al. Nanoscale Research Letters 2011 6:564 doi:10.1186/1556-276X-6-564