Huihu Wang and other researchers of Yonsei University, Republic of Korea report on highly oriented Ga-doped zinc oxide (ZnO) nanorod arrays prepared on a ZnO-buffered silicon substrate in an aqueous solution, which is a mixture of methenamine (C6H12N4), zinc nitrate hexahydrate (Zn(NO3)2•6H2O) and gallium nitrate hydrate (Ga(NO3)3•xH2O). Yang and others of Jilin Normal University, China report on low temperature hydrothermal growth of Well-faceted hexagonal ZnO nanorods synthesized by a simple hydrothermal method at relative low temperature (90°C) without any catalysts or templates. They have grown Zinc oxide (ZnO) nanorods in an aqueous solution that contained Zinc chloride (ZnCl2, Aldrich, purity 98%) and ammonia (25%). Most of the ZnO nanorods showed a perfect hexagonal cross section and well-faceted top and side surfaces. They found that the diameter of ZnO nanorods decreased with the reaction time prolonging. Yu Tian and others of Wuhan University, China report on the Synthesis of Zinc Oxide hollow spherical structure consisting of highly radial and oriented ZnO nanorods, which resulted from a facile precursor-templated synthesis through thermal evaporation at a relative low temperature without any catalyst. They proposed the mechanism of formation of the microstructure as a vapor–solid process. According to them this method may provide a simple and versatile approach to large-scale production of hollow spherical ZnO structure.