AFM images of uncapped nanoholes and QDMs at various stages. (a) Nanoholes, (b) fully-developed QDMs, (c) early-stage QDMs where sQDs are absent, (d) partially-developed QDMs where some sQDs are present around cQD, and (e) fully-developed QDMs. The white (black) scale bars are 250 nm (125 nm).
Patanasemakul et al. Nanoscale Research Letters 2012 7:207 doi:10.1186/1556-276X-7-207