Nanoscopic Light Sources: General Strategy for Nanoscopic Light Source Fabrication (Adv. Mater. 26/2011)

A general strategy for fabricating a nanoscopic light source based on a novel geometry of highindex- contrast materials is reported on page 2937 by Jianwen Dong, Guowei Yang, and co-workers. The cover image shows that strong luminescence emission from an individual hollow-hexagonal ZnO nanocolumn is confined in the hollow region. These findings represent a step toward the fabrication of nanoscopic light sources.