Synthesis of transition metal-doped tungsten oxide nanostructures and their optical properties

In the present work, we report the solvothermal synthesis of transition metal-doped tungsten oxide nanostructures and their optical properties. Uniform, well-defined Co-doped tungsten oxide nanoblocks consisting of ultrathin nanowires, lenticular bundled Zn-doped tungsten oxide nanorods, and plate-shaped or flower-like Fe-doped tungsten oxide particles have been successfully prepared with the addition of different dopants. The doping of Co and Zn ions may prohibit the oriented growth of the tungsten oxide nanowires and favor their self-assembly, leading to the formation of bundled nanoblocks and nanorods. The Fe-doped tungsten oxide flowers may result from the ordered arrangement of single nanoplates. The band gaps of undoped, Fe-, Zn-, and Co-doped tungsten oxides are found to be 2.92, 2.78, 2.62, and 2.52 eV, respectively.     

RFID技术在轨道交通用金属橡胶制品中的应用研究

介绍射频识别(RFID)技术在轨道交通用金属橡胶制品中的应用难点和追溯方案。经绝缘胶封装的陶瓷标签和扎带式标签可以基本满足轨道交通用金属橡胶制品的生产制造环境要求,提出了一种基于RFID电子标签与现有生产管理系统相连接的产品追溯方案,实现对轨道交通用金属橡胶制品信息的追溯。