The above article, published in Applied Physics Letters, has originally reported the growth of ZnO nanorods on GaN using hydrothermal synthesis without any catalyst. Some initial results, including scanning electron microscopy, x-ray diffraction, photoluminescence, and transmission electron microscopy were also discussed in the article. After a few months, we wrote another paper, i.e., Ref. 1. In this paper, we explored in more detail the properties of ZnO nanorods. However, there are some overlapping parts which included the introduction and Figs. (4 out of 12 figures). This unintentional negligence in repetitive data extraction and omission of cross reference to the published experimental results, leading to the unexpected ambiguities and inconveniences to the readers, have constituted the authors full obligation to apologize and to spontaneously retract the above article to uphold the publication protocol.
It took them five years to retract their 2005 publication.