Self-assembly of polystyrene spheres guided by patterned n-type InP substrates has been investigated. InP surfaces were patterned using a variety of methods including wet chemical etching,sputter coating,thermal evaporation,and photo lithography. The self-assembly of polystyrene spheres depended on the appearance of patterns and was affected by the deposition techniques (sputter coating and thermal evaporation) of Au micro-squares. SEM and AFM were used to characterize the surface morphologies.
SU Ge1,2,CAO LiXin1 & LIU TianZhong3 1 Institute of Material Science and Engineering,Ocean University of China,Qingdao 266100,China
CdS:Mn nanorods have been produced via a solvothermal approach in the nonaqueous solvent of ethylenediamine. An absolutely dominant single Mn2+ emission originating from the d-d (4T1-6A1) transition was obtained in CdS:Mn nanocrystals at room temperature. The effects of varying reaction temperature,molar ratio of S/Cd,and reaction time on the crystallinity and luminescence of CdS:Mn nanocrystals were systematically investigated. 1% Mn2+-doped CdS nanorods without any other additives were synthesized at 130℃ for 10 h with an S/Cd molar ratio of 2:1. They show a rod-like shape,and their luminescence intensity around 593 nm is almost the strongest of all the nanorod samples investigated. CdS:Mn nanorods promise potential applications in nanoscale electronic and photonic devices.
